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Tuesday, April 13, 2021

Volcanic winter

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A volcanic winter is a reduction in global temperatures caused by volcanic ash and droplets of sulfuric acid and water obscuring the Sun and raising Earth's albedo (increasing the reflection of solar radiation) after a large, particularly explosive volcanic eruption. Long-term cooling effects are primarily dependent upon injection of sulfur gases into the stratosphere where they undergo a series of reactions to create sulfuric acid which can nucleate and form aerosols. Volcanic stratospheric aerosols cool the surface by reflecting solar radiation and warm the stratosphere by absorbing terrestrial radiation. The variations in atmospheric warming and cooling result in changes in tropospheric and stratospheric circulation.

Historic examples

The effects of volcanic eruptions on recent winters are modest in scale, but historically have been significant.

1991
The 1991 eruption of Mount Pinatubo, a stratovolcano in the Philippines, cooled global temperatures for about 2–3 years.
1883
The explosion of Krakatoa (Krakatau) may have contributed to volcanic winter-like conditions. The four years following the explosion were unusually cold, and the winter of 1887–1888 included powerful blizzards. Record snowfalls were recorded worldwide. However, the period of cold winters started with the 1882-1883 winter, months before the Krakatoa eruption.
1815
The 1815 eruption of Mount Tambora, a stratovolcano in Indonesia. The eruption had a Volcanic Explosivity Index of 7. The eruption was the largest in recorded human history and one of largest in the holocene (10,000 years to present). The eruption led to global cooling and worldwide harvest failures caused what came to be known as the "Year Without a Summer" of 1816. Europe, still recuperating from the Napoleonic Wars, suffered from food shortages. Food riots broke out in the United Kingdom and France, and grain warehouses were looted. The violence was worst in landlocked Switzerland, where famine caused the government to declare a national emergency. Huge storms and abnormal rainfall with flooding of Europe's major rivers (including the Rhine) are attributed to the event, as did the August frost. A major typhus epidemic occurred in Ireland between 1816 and 1819, precipitated by the famine. An estimated 100,000 Irish people perished during this period. A BBC documentary, using figures compiled in Switzerland, estimated that the fatality rates in 1816 were twice that of average years, giving an approximate European fatality total of 200,000 deaths. The corn crop in Northeastern North America failed, due to mid-summer frosts in New York State and June snowfalls in New England and Newfoundland and Labrador. The crop failures in New England, Canada, and parts of Europe also caused the price of wheat, grains, meat, vegetables, butter, milk, and flour to rise sharply.
1783
The eruption of the Laki volcano in Iceland released enormous amounts of sulfur dioxide, resulting in the death of much of the island's livestock and a catastrophic famine which killed a quarter of the Icelandic population. It has been estimated that 23,000 British people died from the poisoning. Northern hemisphere temperatures dropped by about 1 °C in the year following the Laki eruption. The winter of 1783–1784 was very severe, and estimated to have caused 8,000 additional deaths in the UK. The meteorological impact of Laki continued, contributing significantly to several years of extreme weather in Europe. In France, the sequence of extreme weather events contributed significantly to an increase in poverty and famine that may have contributed to the French Revolution in 1789. Laki was only one factor in a decade of climatic disruption, as Grímsvötn was erupting from 1783 to 1785, and there may have been an unusually strong El Niño effect from 1789 to 1793. A paper written by Benjamin Franklin in 1783 blamed the unusually cool summer of 1783 in North America on volcanic dust coming from this eruption, though Franklin's proposal has been questioned.
1600
The Huaynaputina in Peru erupted. Tree ring studies show that 1601 was cold. Russia had its worst famine in 1601–1603. From 1600 to 1602, Switzerland, Latvia and Estonia had exceptionally cold winters. The wine harvest was late in 1601 in France, and in Peru and Germany, wine production collapsed. Peach trees bloomed late in China, and Lake Suwa in Japan froze early.
1452 or 1453
A cataclysmic eruption of the submarine volcano Kuwae caused worldwide disruptions.
1315-1317
The Great Famine of 1315–1317 in Europe may have been precipitated by a volcanic event, perhaps that of Mount Tarawera, New Zealand, lasting about five years.
1257
The 1257 Samalas eruption in Indonesia. The eruption left behind a large caldera next to Rinjani, with Lake Segara Anak inside it. This eruption probably had a Volcanic Explosivity Index of 7, making it one of the largest eruptions of the current Holocene epoch.
 
An examination of ice cores showed a large spike in sulfate deposition around 1257. This was strong evidence of a large eruption having occurred somewhere in the world. In 2013, scientists proved that the eruption occurred at Mount Samalas. This eruption had four distinct phases, alternately creating eruption columns reaching tens of kilometres into the atmosphere and pyroclastic flows burying large parts of Lombok Island. The flows destroyed human habitations, including the city of Pamatan. Ash from the eruption fell as far away as Java Island. The volcano deposited more than 10 cubic kilometres (2.4 cu mi) of material. The eruption was witnessed by people who recorded it on palm leaves, the Babad Lombok. Later volcanic activity created additional volcanic centres in the caldera, including the Barujari cone that remains active. The aerosols injected into the atmosphere reduced the solar radiation reaching the Earth's surface, which cooled the atmosphere for several years and led to famines and crop failures in Europe and elsewhere, although the exact scale of the temperature anomalies and their consequences is still debated. It is possible that the eruption helped trigger the Little Ice Age.
945 or 946
The 946 eruption of Paektu Mountain is believed to have caused a major global climatic impact, with regional anomalies of colder weather and snowfall from 945 to 948.
535
The extreme weather events of 535–536 are most likely linked to a volcanic eruption. The latest theorised explanation is the Tierra Blanca Joven (TBJ) eruption of the Ilopango caldera in central El Salvador.
1159 BCE
The Hekla 3 eruption in Iceland may have been responsible for the Late Bronze Age collapse around the Eastern Mediterranean by causing crop failures and forced migrations further West among the so-called sea peoples.
Toba supereruption
A proposed volcanic winter occurred around 71,000–73,000 years ago following the supereruption of Lake Toba on Sumatra island in Indonesia. In the following 6 years there was the highest amount of volcanic sulfur deposited in the last 110,000 years, possibly causing significant deforestation in Southeast Asia and the cooling of global temperatures by 1 °C. Some scientists hypothesize that the eruption caused an immediate return to a glacial climate by accelerating an ongoing continental glaciation, causing massive population reduction among animals and human beings. Others argue that the climatic effects of the eruption were too weak and brief to impact early human populations to the degree proposed. This, combined with the abrupt occurrence of most human differentiations in that same period, is a probable case of bottleneck linked to volcanic winters (see Toba catastrophe theory). On average, super-eruptions with total eruptive masses of at least 1015 kg (Toba eruptive mass = 6.9 × 1015 kg) occur every 1 million years. However, archaeologists who in 2013 found a microscopic layer of glassy volcanic ash in sediments of Lake Malawi, and definitively linked the ash to the 75,000-year-old Toba super-eruption, went on to note a complete absence of the change in fossil type close to the ash layer that would be expected following a severe volcanic winter. This result led the archaeologists to conclude that the largest known volcanic eruption in the history of the human species did not significantly alter the climate of East Africa.

Effects on life

The causes of the population bottleneck – a sharp decrease in a species' population, immediately followed by a period of great genetic divergence (differentiation) among survivors – is attributed to volcanic winters by some researchers. Such events may diminish populations to "levels low enough for evolutionary changes, which occur much faster in small populations, to produce rapid population differentiation". With the Lake Toba bottleneck, many species showed massive effects of narrowing of the gene pool, and Toba may have reduced the human population to between 40,000 and 15,000 or even fewer.

Surveys of scientists' views on climate change

Academic studies of scientific consensus on human-caused global warming among climate experts (2010-2015) reflect that the level of consensus correlates with expertise in climate science. A 2019 study found scientific consensus to be at 100%.

Surveys of scientists' views on climate change – with a focus on human-caused or anthropogenic global warming (AGW) – have been undertaken since the 1990s. A 2016 paper (which was co-authored by Naomi Oreskes, Peter Doran, William Anderegg, Bart Verheggen, Ed Maibach, J. Stuart Carlton and John Cook, and which was based on a half a dozen independent studies by the authors) concluded that "the finding of 97% consensus [that humans are causing recent global warming] in published climate research is robust and consistent with other surveys of climate scientists and peer-reviewed studies." A 2019 study found scientific consensus to be at 100%.

2010s

Powell, 2019

In 2019, James L. Powell, a former member of the National Science Board, analysed titles of peer-reviewed studies published in the first seven months of 2019 and found not a single study disagreed with the consensus view. When the titles implied uncertainty about the cause of climate change, the abstracts or the article in its entirety were examined. The total amount of articles found via Web of Science was 11,602.

Verheggen et al., 2014

In 2014, Bart Verheggen of the Netherlands Environmental Assessment Agency surveyed 1,868 climate scientists. They found that, consistent with other research, the level of agreement on anthropogenic causation correlated with expertise - 90% of those surveyed with more than 10 peer-reviewed papers related to climate (just under half of survey respondents) explicitly agreed that greenhouse gases were the main cause of global warming. They included researchers on mitigation and adaptation in their surveys in addition to physical climate scientists, leading to a slightly lower level of consensus compared to previous studies.

Powell, 2013

James L. Powell analyzed published research on global warming and climate change between 1991 and 2012 and found that of the 13,950 articles in peer-reviewed journals, only 24 (<0.2%) rejected anthropogenic global warming. This was a follow-up to an analysis looking at 2,258 peer-reviewed articles published between November 2012 and December 2013 revealed that only one of the 9,136 authors rejected anthropogenic global warming.

John Cook et al., 2013

Cook et al. examined 11,944 abstracts from the peer-reviewed scientific literature from 1991–2011 that matched the topics 'global climate change' or 'global warming'. They found that, while 66.4% of them expressed no position on anthropogenic global warming (AGW), of those that did, 97.1% endorsed the consensus position that humans are contributing to global warming. They also invited authors to rate their own papers and found that, while 35.5% rated their paper as expressing no position on AGW, 97.2% of the rest endorsed the consensus. In both cases the percentage of endorsements among papers expressing a position was marginally increasing over time. They concluded that the number of papers actually rejecting the consensus on AGW is a vanishingly small proportion of the published research.

In their discussion of the results, the authors said that the large proportion of abstracts that state no position on AGW is as expected in a consensus situation, as anticipated in a chapter published in 2007, adding that "the fundamental science of AGW is no longer controversial among the publishing science community and the remaining debate in the field has moved on to other topics."

A 2016 study entitled Learning from mistakes in climate research examined the quality of the 3% of peer-reviewed papers discovered by this work to reject the consensus view. They discovered that "replication reveals a number of methodological flaws, and a pattern of common mistakes emerges that is not visible when looking at single isolated cases".

Farnsworth and Lichter, 2011

In an October 2011 paper published in the International Journal of Public Opinion Research, researchers from George Mason University analyzed the results of a survey of 998 scientists working in academia, government, and industry. The scientists polled were members of the American Geophysical Union (AGU) or the American Meteorological Society (AMS) and listed in the 23rd edition of American Men and Women of Science, a biographical reference work on leading American scientists, and 489 returned completed questionnaires. Of those who replied, 97% agreed that global temperatures have risen over the past century. 84% agreed that "human-induced greenhouse warming is now occurring," 5% disagreed, and 12% didn't know.

When asked what they regard as "the likely effects of global climate change in the next 50 to 100 years," on a scale of 1 to 10, from Trivial to Catastrophic: 13% of respondents replied 1 to 3 (trivial/mild), 44% replied 4 to 7 (moderate), 41% replied 8 to 10 (severe/catastrophic), and 2% didn't know.

Anderegg, Prall, Harold, and Schneider, 2010

By Cook 2011 based on Doran 2009 and Anderegg 2010 studies. 97–98% of the most published climate researchers say humans are very likely causing most global warming. In another study 97.4% of publishing specialists in climate change say that human activity is a significant contributing factor in changing mean global temperatures.

Anderegg et al., in a 2010 paper in the Proceedings of the National Academy of Sciences of the United States of America (PNAS), reviewed publication and citation data for 1,372 climate researchers, based on authorship of scientific assessment reports and membership on multisignatory statements about anthropogenic climate change. The number of climate-relevant publications authored or coauthored by each researcher was used to define their 'expertise', and the number of citations for each of the researcher's four highest-cited papers was used to define their 'prominence'. Removing researchers who had authored fewer than 20 climate publications reduced the database to 908 researchers but did not materially alter the results. The authors of the paper say that their database of researchers "is not comprehensive nor designed to be representative of the entire climate science community," but say that since they drew the researchers from the most high-profile reports and public statements, it is likely that it represents the "strongest and most credentialed" researchers both 'convinced by the evidence' (CE) and 'unconvinced by the evidence' (UE) on the tenets of anthropogenic climate change.

Anderegg et al. drew the following two conclusions:

(i) 97–98% of the climate researchers most actively publishing in the field surveyed here support the tenets of ACC (Anthropogenic Climate Change) outlined by the Intergovernmental Panel on Climate Change, and (ii) the relative climate expertise and scientific prominence of the researchers unconvinced of ACC are substantially below that of the convinced researchers.

2000s

Doran and Kendall Zimmerman, 2009

This paper is based on the Zimmerman 2008 MS thesis; the full methods are in the MS thesis. A web-based poll performed by Peter Doran and Maggie Kendall Zimmerman of the Earth and Environmental Sciences department, University of Illinois at Chicago. They received replies from 3,146 of the 10,257 polled Earth scientists. The survey was designed to take less than two minutes to complete. Results were analyzed globally and by specialization. Among all respondents, 90% agreed that temperatures had generally risen compared to pre-1800 levels, and 82% agreed that humans significantly influence the global temperature. 76 out of the 79 respondents who "listed climate science as their area of expertise, and who also have published more than 50% of their recent peer-reviewed papers on the subject of climate change", thought that mean global temperatures had risen compared to pre-1800s levels. Of those 79 scientists, 75 out of the 77 (97.4%) answered that human activity was a significant factor in changing mean global temperatures. The remaining two were not asked, because in question one they responded that temperatures had remained relatively constant. Economic geologists and meteorologists were among the biggest doubters, with only 47 percent and 64 percent respectively thinking that human activity was a significant contributing factor. In summary, Doran and Zimmerman wrote:

It seems that the debate on the authenticity of global warming and the role played by human activity is largely nonexistent among those who understand the nuances and scientific basis of long-term climate processes.

Bray and von Storch, 2008

Dennis Bray and Hans von Storch, of the Institute for Coastal Research at the Helmholtz Research Centre in Germany, conducted an online survey in August 2008, of 2,059 climate scientists from 34 different countries, the third survey on this topic by these authors. A web link with a unique identifier was given to each respondent to eliminate multiple responses. A total of 375 responses were received giving an overall response rate of 18%. The climate change consensus results were published by Bray, and another paper has also been published based on the survey.

The survey was composed of 76 questions split into a number of sections. There were sections on the demographics of the respondents, their assessment of the state of climate science, how good the science is, climate change impacts, adaptation and mitigation, their opinion of the IPCC, and how well climate science was being communicated to the public. Most of the answers were on a scale from 1 to 7 from 'not at all' to 'very much'.

In the section on climate change impacts, questions 20 and 21 were relevant to scientific opinion on climate change. Question 20, "How convinced are you that climate change, whether natural or anthropogenic, is occurring now?" Answers: 67.1% very much convinced (7), 26.7% to some large extent (5–6), 6.2% said to some small extent (2–4), none said not at all. Question 21, "How convinced are you that most of recent or near future climate change is, or will be, a result of anthropogenic causes?" Answers: 34.6% very much convinced (7), 48.9% being convinced to a large extent (5–6), 15.1% to a small extent (2–4), and 1.35% not convinced at all (1).

STATS, 2007

In 2007, Harris Interactive surveyed 489 randomly selected members of either the American Meteorological Society or the American Geophysical Union for the Statistical Assessment Service (STATS) at George Mason University. The survey found 97% agreed that global temperatures have increased during the past 100 years; 84% say they personally believe human-induced warming is occurring, and 74% agree that "currently available scientific evidence" substantiates its occurrence. Only 5% believe that human activity does not contribute to greenhouse warming; 41% say they thought the effects of global warming would be near catastrophic over the next 50–100 years; 44% say said effects would be moderately dangerous; 13% saw relatively little danger; 56% say global climate change is a mature science; 39% say it is an emerging science.

Oreskes, 2004

A 2004 article by geologist and historian of science Naomi Oreskes summarized a study of the scientific literature on climate change. The essay concluded that there is a scientific consensus on the reality of anthropogenic climate change. The author analyzed 928 abstracts of papers from refereed scientific journals between 1993 and 2003, listed with the keywords "global climate change". Oreskes divided the abstracts into six categories: explicit endorsement of the consensus position, evaluation of impacts, mitigation proposals, methods, paleoclimate analysis, and rejection of the consensus position. 75% of the abstracts were placed in the first three categories, thus either explicitly or implicitly accepting the consensus view; 25% dealt with methods or paleoclimate, thus taking no position on current anthropogenic climate change; none of the abstracts disagreed with the consensus position, which the author found to be "remarkable". According to the report, "authors evaluating impacts, developing methods, or studying paleoclimatic change might believe that current climate change is natural. However, none of these papers argued that point."

Bray and von Storch, 2003

In 2003, Bray and von Storch conducted a survey of the perspectives of climate scientists on global climate change. The survey received 530 responses from 27 different countries. The 2003 survey has been strongly criticized on the grounds that it was performed on the web with no means to verify that the respondents were climate scientists or to prevent multiple submissions. The survey required entry of a username and password, but the username and password were circulated to a climate change denial mailing list and elsewhere on the internet. Bray and von Storch defended their results and accused climate change deniers of interpreting the results with bias. Bray's submission to Science on 22 December 2004 was rejected.

One of the questions asked in the survey was "To what extent do you agree or disagree that climate change is mostly the result of anthropogenic causes?", with a value of 1 indicating strongly agree and a value of 7 indicating strongly disagree. The results showed a mean of 3.62, with 50 responses (9.4%) indicating "strongly agree" and 54 responses (9.7%) indicating "strongly disagree". The same survey indicates a 72% to 20% endorsement of the IPCC reports as accurate, and a 15% to 80% rejection of the thesis that "there is enough uncertainty about the phenomenon of global warming that there is no need for immediate policy decisions."

1990s

  • In 1996, Dennis Bray and Hans von Storch undertook a survey of climate scientists on attitudes towards global warming and related matters. The results were subsequently published in the Bulletin of the American Meteorological Society. The paper addressed the views of climate scientists, with a response rate of 40% from a mail survey questionnaire to 1000 scientists in Germany, the United States and Canada. Most of the scientists accepted that global warming was occurring and appropriate policy action should be taken, but there was wide disagreement about the likely effects on society and almost all agreed that the predictive ability of currently existing models was limited. On a scale of 1 (highest confidence) to 7 (lowest confidence) regarding belief in the ability to make "reasonable predictions" the mean was 4.8 and 5.2 for 10- and 100-year predictions, respectively. On the question of whether global warming is occurring or will occur, the mean response was 3.3, and for future prospects of warming the mean was 2.6.
  • A Gallup poll of 400 members of the American Geophysical Union and the American Meteorological Society along with an analysis of reporting on global warming by the Center for Media and Public Affairs, a report on which was issued in 1992. Accounts of the results of that survey differ in their interpretation and even in the basic statistical percentages:
    • Fairness and Accuracy in Reporting states that the report said that 67% of the scientists said that human-induced global warming was occurring, with 11% disagreeing and the rest undecided.
    • George Will reported "53 percent do not believe warming has occurred, and another 30 percent are uncertain." (Washington Post, 3 September 1992). In a correction Gallup stated: "Most scientists involved in research in this area believe that human-induced global warming is occurring now."
  • Stewart, T. R., Mumpower, J. L., and Reagan-Cirincione, P. (1992). Scientists' opinions about global climate change: Summary of the results of a survey. NAEP (National Association of Environmental Professionals) Newsletter, 17(2), 6-7.
  • In 1991, the Center for Science, Technology, and Media conducted a survey of 118 scientists regarding views on the climate change. Analysis by the authors of the respondents projections of warming and agreement with statements about warming resulted in them categorizing response in 3 "clusters": 13 (15%) expressing skepticism of the 1990 IPCC estimate, 39 (44%) expressing uncertainty with the IPCC estimate, and 37 (42%) agreeing with the IPCC estimate.
  • Global Environmental Change Report, 1990: GECR climate survey shows strong agreement on action, less so on warming. Global Environmental Change Report 2, No. 9, pp. 1–3

Monday, April 12, 2021

Public opinion on climate change

From Wikipedia, the free encyclopedia
 
Placard warning "1 °C and rising..." at an Extinction Rebellion protest (London, 2019).

Public opinion on climate change is the aggregate of attitudes or beliefs held by the adult population concerning the science, economics, and politics of climate change. It is affected by media coverage of climate change.

General overview

In January 2021, the United Nations Development Programme reported results of the largest-ever climate survey, which indicated that two-thirds of respondents consider climate change as an emergency, with forest and land conservation being the most popular solutions. Specifically, The Peoples' Climate Vote (1.2 million respondents in over 50 countries) found that 64% said climate change was an emergency – presenting a clear and convincing call for decision-makers to step up on ambition.

Influences on individual opinion

Geographic region

For a list of countries and their opinion see "Climate change opinion by country" below

United States, Europe, and Australia are the darkest while Africa, the Middle East, and Oceania are the lightest.
Proportion reporting knowing "something" or "a great deal" about global warming in 2007–08. Darker areas indicate a greater proportion of individuals aware, yellow indicates no data.
 
Latin America and Japan are the darkest while the remainder are either much lighter or mixed.
Proportion responding yes when asked, "Temperature rise is part of global warming or climate change. Do you think rising temperatures are [...] a result of human activities?"
 
The Americas, Europe, Australia, Kenya, and Japan are the darkest. The remainder is much lighter.
Proportion responding that global warming is a serious personal threat

Between 2007–20010, the Gallup World Poll surveyed individuals in 143 countries. This poll queried whether the respondent knew of global warming. Those who had a basic concept of global warming didn't necessarily connect it to human activities, revealing that knowledge of global warming and the knowledge that it's human-induced are two separate things. Over a third of the world's population were unaware of global warming. Developing countries have less awareness than developed, and Africa the least aware. Of those aware, residents of Latin America and developed countries in Asia led the belief that climate change is a result of human activities while Africa, parts of Asia and the Middle East, and a few countries from the former Soviet Union led in the opposite. Opinion within the United Kingdom was divided.

The first major worldwide poll, conducted by Gallup in 2008–2009 in 127 countries, found that some 62% of people worldwide said they knew about global warming. In the industrialized countries of North America, Europe, and Japan, 67% or more knew about it (97% in the U.S., 99% in Japan); in developing countries, especially in Africa, fewer than a quarter knew about it, although many had noticed local weather changes. The survey results suggest that between 2007 and 2010 only 42% of the world's population were aware of climate change and believed that it is caused by human activity. Among those who knew about global warming, there was a wide variation between nations in belief that the warming was a result of human activities.

Adults in Asia, with the exception of those in developed countries, are the least likely to perceive global warming as a threat. In developed Asian countries like South Korea, perceptions of climate change are associated with strong emotional beliefs about its causes. In the western world, individuals are the most likely to be aware and perceive it as a very or somewhat serious threat to themselves and their families; although Europeans are more concerned about climate change than those in the United States. However, the public in Africa, where individuals are the most vulnerable to global warming while producing the least carbon dioxide, is the least aware – which translates into a low perception that it is a threat.

These variations pose a challenge to policymakers, as different countries travel down different paths, making an agreement over an appropriate response difficult. While Africa may be the most vulnerable and produce the least amount of greenhouse gases, they are the most ambivalent. The top five emitters (China, the United States, India, Russia, and Japan), who together emit half the world's greenhouse gases, vary in both awareness and concern. The United States, Russia, and Japan are the most aware at over 85% of the population. Conversely, only two-thirds of people in China and one-third in India are aware. Japan expresses the greatest concern, which translates into support for environmental policies. People in China, Russia, and the United States, while varying in awareness, have expressed a similar proportion of aware individuals concerned. Similarly, those aware in India are likely to be concerned, but India faces challenges spreading this concern to the remaining population as its energy needs increase over the next decade.

An online survey on environmental questions conducted in 20 countries by Ipsos MORI, "Global Trends 2014", shows broad agreement, especially on climate change and if it is caused by humans, though the U.S. ranked lowest with 54% agreement. It has been suggested that the low U.S. ranking is tied to denial campaigns.

A 2010 survey of 14 industrialized countries found that skepticism about the danger of global warming was highest in Australia, Norway, New Zealand and the United States, in that order, correlating positively with per capita emissions of carbon dioxide.

Education

In countries varying in awareness, an educational gap translates into a gap in awareness. However an increase in awareness does not always result in an increase in perceived threat. In China, 98% of those who have completed four years or more of college education reported knowing something or a great deal of climate change while only 63% of those who have completed nine years of education reported the same. Despite the differences in awareness in China, all groups perceive a low level of threat from global warming. In India, those who are educated are more likely to be aware, and those who are educated there are far more likely to report perceiving global warming as a threat than those who are not educated. In Europe, individuals who have attained a higher level of education perceive climate change as a serious threat. There is also a strong association between education and Internet use. Europeans who use the Internet more are more likely to perceive climate change as a serious threat. However, a survey of American adults found "little disagreement among culturally diverse citizens on what science knows about climate change. In the US, individuals with greater science literacy and education have more polarized beliefs on climate change.

Demographics

Residential demographics affect perceptions of global warming. In China, 77% of those who live in urban areas are aware of global warming compared to 52% in rural areas. This trend is mirrored in India with 49% to 29% awareness, respectively.

Of the countries where at least half the population is aware of global warming, those with the majority who believe that global warming is due to human activities have a greater national GDP per unit energy—or, a greater energy efficiency.

In Europe, individuals under fifty-five are more likely to perceive both "poverty, lack of food and drinking water" and climate change as a serious threat than individuals over fifty-five. Male individuals are more likely to perceive climate change as a threat than female individuals. Managers, white-collar workers, and students are more likely to perceive climate change as a greater threat than house persons and retired individuals.

In the United States, conservative white men are more likely than other Americans to deny climate change. A very similar trend has been documented in Norway, where 63% of conservative men deny anthropogenic climate change compared to just 36% of the general Norwegian population. In Sweden, political conservatism was similarly found to correlate with climate change denial, while in Brazil, climate change denial has been found to be more correlated with gender, with men being significantly more likely to express denialist viewpoints compared to women.

In Great Britain, a movement of by women known as "birthstrikers" advocates for refraining from procreation until the possibility of "climate breakdown and civilisation collapse" is averted.

In general, there is a substantial variation in the direction in which demographic traits, like age or gender, correlate with climate change concern. While women and younger people tend to be more concerned about climate change in English-speaking constituencies, the opposite is true in most African countries.

Political identification

Democrats (blue) and Republicans (red) have long differed in views of the importance of addressing climate change, with the gap widening in the late 2010s mainly through Democrats' share increasing by more than 30 points.
(Discontinuity resulted from survey changing in 2015 from reciting "global warming" to "climate change".)

In the United States, support for environmental protection was relatively non-partisan in the twentieth century. Republican Theodore Roosevelt established national parks whereas Democrat Franklin Delano Roosevelt established the Soil Conservation Service. Republican Richard Nixon was instrumental in founding the United States Environmental Protection Agency, and tried to install a third pillar of NATO dealing with environmental challenges such as acid rain and the greenhouse effect. Daniel Patrick Moynihan was Nixon's NATO delegate for the topic.

This non-partisanship began to erode during the 1980s, when the Reagan administration described environmental protection as an economic burden. Views over global warming began to seriously diverge between Democrats and Republicans during the negotiations that led up to the creation of the Kyoto Protocol in 1998. In a 2008 Gallup poll of the American public, 76% of Democrats and only 41% of Republicans said that they believed global warming was already happening. The opinions of the political elites, such as members of Congress, tends to be even more polarized.

Public opinion on climate change can be influenced by who people vote for. Although media coverage influences how some view climate change, research shows that voting behavior influences climate change skepticism. This shows that people's views on climate change tend to align with the people they voted for.

In Europe, opinion is not strongly divided among left and right parties. Although European political parties on the left, including Green parties, strongly support measures to address climate change, conservative European political parties maintain similar sentiments, most notably in Western and Northern Europe. For example, Margaret Thatcher, never a friend of the coal mining industry, was a strong supporter of an active climate protection policy and was instrumental in founding the Intergovernmental Panel on Climate Change and the British Hadley Centre for Climate Prediction and Research. Some speeches, as to the Royal Society on 27 September 1988 and to the UN general assembly in November 1989 helped to put climate change, acid rain, and general pollution in the British mainstream. After her career, however, Thatcher was less of a climate activist, as she called climate action a "marvelous excuse for supranational socialism", and called Al Gore an "apocalyptic hyperbole". France's center-right President Chirac pushed key environmental and climate change policies in France in 2005–2007. Conservative German administrations (under the Christian Democratic Union and Christian Social Union) in the past two decades have supported European Union climate change initiatives; concern about forest dieback and acid rain regulation were initiated under Kohl's archconservative minister of the interior Friedrich Zimmermann. In the period after former President George W. Bush announced that the United States was leaving the Kyoto Treaty, European media and newspapers on both the left and right criticized the move. The conservative Spanish La Razón, the Irish Times, the Irish Independent, the Danish Berlingske Tidende, and the Greek Kathimerini all condemned the Bush administration's decision, as did left-leaning newspapers.

In Norway, a 2013 poll conducted by TNS Gallup found that 92% of those who vote for the Socialist Left Party and 89% of those who vote for the Liberal Party believe that global warming is caused by humans, while the percentage who held this belief is 60% among voters for the Conservative Party and 41% among voters for the Progress Party.

The shared sentiments between the political left and right on climate change further illustrate the divide in perception between the United States and Europe on climate change. As an example, conservative German Prime Ministers Helmut Kohl and Angela Merkel have differed with other parties in Germany only on how to meet emissions reduction targets, not whether or not to establish or fulfill them.

A 2017 study found that those who changed their opinion on climate change between 2010 and 2014 did so "primarily to align better with those who shared their party identification and political ideology. This conforms with the theory of motivated reasoning: Evidence consistent with prior beliefs is viewed as strong and, on politically salient issues, people strive to bring their opinions into conformance with those who share their political identity". Furthermore, a 2019 study examining the growing skepticism of climate change among American Republicans argues that persuasion and rhetoric from party elites play a critical role in public opinion formation, and that these elite cues are propagated through mainstream and social media sources.

For those who care about the environment and want change are not happy about some policies, for example the support of the cap and trade policy but very few people are willing to pay more than 15 dollars per month for a program that is supposed to help the environment. There is evidence that not many people are aware of climate change in the US, only 2% of respondents ranked the environment as the top issue in the US.

Individual risk assessment and assignment

The IPCC attempts to orchestrate global (climate) change research to shape a worldwide consensus. However, the consensus approach has been dubbed more a liability than an asset in comparison to other environmental challenges. The linear model of policy-making, based on a more knowledge we have, the better the political response will be is said to have not been working and is in the meantime rejected by sociology.

Sheldon Ungar, a Canadian sociologist, compares the different public reactions towards ozone depletion and climate change. The public opinion failed to tie climate change to concrete events which could be used as a threshold or beacon to signify immediate danger. Scientific predictions of a temperature rise of two to three degrees Celsius over several decades do not respond with people, e.g. in North America, that experience similar swings during a single day. As scientists define global warming a problem of the future, a liability in "attention economy", pessimistic outlooks in general and assigning extreme weather to climate change have often been discredited or ridiculed (compare Gore effect) in the public arena. While the greenhouse effect per se is essential for life on earth, the case was quite different with the ozone shield and other metaphors about the ozone depletion. The scientific assessment of the ozone problem also had large uncertainties. But the metaphors used in the discussion (ozone shield, ozone hole) reflected better with lay people and their concerns.

The idea of rays penetrating a damaged "shield" meshes nicely with abiding and resonant cultural motifs, including "Hollywood affinities". These range from the shields on the Starship Enterprise to Star Wars, ... It is these pre-scientific bridging metaphors built around the penetration of a deteriorating shield that render the ozone problem relatively simple. That the ozone threat can be linked with Darth Vader means that it is encompassed in common sense understandings that are deeply ingrained and widely shared. (Sheldon Ungar 2000)

The chlorofluorocarbon (CFC) regulation attempts of the end of the 1980s profited from those easy-to-grasp metaphors and the personal risk assumptions taken from them. As well the fate of celebrities like President Ronald Reagan, which had skin cancer removal in 1985 and 1987, was of high importance. In case of the public opinion on climate change, no imminent danger is perceived.

Ideology

In the United States, ideology is an effective predictor of party identification, where conservatives are more prevalent among Republicans, and moderates and liberals among independents and Democrats. A shift in ideology is often associated with in a shift in political views. For example, when the number of conservatives rose from 2008 to 2009, the number of individuals who felt that global warming was being exaggerated in the media also rose. The 2006 BBC World Service poll found that when asked about various policy options to reduce greenhouse gas emissions – tax incentives for alternative energy research and development, installment of taxes to encourage energy conservation, and reliance on nuclear energy to reduce fossil fuels. The majority of those asked felt that tax incentives were the path of action that they preferred.

As of May 2016, polls have repeatedly found that a majority of Republican voters, particularly young ones, believe the government should take action to reduce carbon dioxide emissions.

The pursuit of green energy is an ideology that defines hydroelectric dams, natural gas power plants, and nuclear power as unacceptable alternative energies for the eight billion tons of coal burnt each year. While there is popular support for wind, solar, biomass, and geothermal energy, all these sources combined only supplied 1.3% of global energy in 2013.

After a country host the annual Conference of the Parties (COP) climate legislation increases which causes policy diffusion. There is strong evidence of policy diffusion which is when a policy is made it is influenced by the policy choices made elsewhere.This can a have positive effect on climate legislation.

Scientific analyses of international survey data show that right-wing orientation and individualism are strongly correlated to climate change denial in the US and other English-speaking countries, but much less in most non-English speaking nations.

Charts

A 2018 study found that individuals were more likely to accept that global temperatures were increasing if they were shown the information in a chart rather than in text.

Issues

Science

A scientific consensus on climate change exists, as recognized by national academies of science and other authoritative bodies. The opinion gap between scientists and the public in 2009 stands at 84% to 49% that global temperatures are increasing because of human-activity. However, more recent research has identified substantial geographical variation in the public's understanding of the scientific consensus.

Economics

Economic debates weigh the benefits of limiting industrial emissions of mitigating global warming against the costs that such changes would entail. While there is a greater amount of agreement over whether global warming exists, there is less agreement over the appropriate response. Electric or petroleum distribution may be government owned or utilities may be regulated by government. The government owned or regulated utilities may, or may not choose to make lower emissions a priority over economics, in unregulated counties industry follows economic priorities. An example of the economic priority is Royal Dutch Shell PLC reporting CO2 emissions of 81 million metric tonnes in 2013.

Media

The popular media in the U.S. gives greater attention to skeptics relative to the scientific community as a whole, and the level of agreement within the scientific community has not been accurately communicated. US popular media coverage differs from that presented in other countries, where reporting is more consistent with the scientific literature. Some journalists attribute the difference to climate change denial being propagated, mainly in the US, by business-centered organizations employing tactics worked out previously by the US tobacco lobby. However, one study suggests that these tactic are less prominent in the media and that the public instead draws their opinions on climate mainly from the cues of political party elites.

The efforts of Al Gore and other environmental campaigns have focused on the effects of global warming and have managed to increase awareness and concern, but despite these efforts as of 2007, the number of Americans believing humans are the cause of global warming was holding steady at 61%, and those believing the popular media was understating the issue remained about 35%. Between 2010 and 2013, the number of Americans who believe the media under-reports the seriousness of global warming has been increasing, and the number who think media over-states it has been falling. According to a 2013 Gallup US opinion poll, 57% believe global warming is at least as bad as portrayed in the media (with 33% thinking media has downplayed global warming and 24% saying coverage is accurate). Less than half of Americans (41%) think the problem is not as bad as media portrays it.

September 2011 Angus Reid Public Opinion poll found that Britons (43%) are less likely than Americans (49%) or Canadians (52%) to say that "global warming is a fact and is mostly caused by emissions from vehicles and industrial facilities". The same poll found that 20% of Americans, 20% of Britons and 14% of Canadians think "global warming is a theory that has not yet been proven".

A March 2013 Public Policy Polling poll about widespread and infamous conspiracy theories found that 37% of American voters believe that global warming is a hoax, while 51% do not.

A 2013 poll in Norway conducted by TNS Gallup found that 66% of the population believe that climate change is caused by humans, while 17% do not believe this.

Politics

September 2019 climate strike in Sydney, Australia

Public opinion impacts on the issue of climate change because governments need willing electorates and citizens in order to implement policies that address climate change. Further, when climate change perceptions differ between the populace and governments, the communication of risk to the public becomes problematic. Finally, a public that is not aware of the issues surrounding climate change may resist or oppose climate change policies, which is of considerable importance to politicians and state leaders.

Public support for action to forestall global warming is as strong as public support has been historically for many other government actions; however, it is not "intense" in the sense that it overrides other priorities.

A 2009 Eurobarometer survey found that, on the average, Europeans rate climate change as the second most serious problem facing the world today, between "poverty, the lack of food and drinking water" and "a major global economic downturn." 87% of Europeans consider climate change to be a "serious" or "very serious" problem, while 10% "do not consider it a serious problem." However, the proportion who believe it to be a problem has dropped in the period 2008/9 when the surveys were conducted. While the small majority believe climate change is a serious threat, 55% percent believe the EU is doing too little and 30% believe the EU is going the right amount. As a result of European Union climate change perceptions, "climate change is an issue that has reached such a level of social and political acceptability across the EU that it enables (indeed, forces) the EU Commission and national leaders to produce all sorts of measures, including taxes." Despite the persistent high level of personal involvement of European citizens, found in another Eurobarometer survey in 2011, EU leaders have begun to downscale climate policy issues on the political agenda since the beginning of the Eurozone crisis.

Although public opinion may not be the only factor influencing renewable energy policies, it is a key catalyst. Research has found that the shifts in public opinion in the direction of pro-environmentalism strongly increased the adoption of renewable energy policies in Europe, which can thus be applied in the U.S. and how important climate solutions are to Americans. Moreover, other research shows that countries in which more people believe in human-made climate change tend to have higher carbon prices.

The proportion of Americans who believe that the effects of global warming have begun or will begin in a few years rose to a peak in 2008 where it then declined, and a similar trend was found regarding the belief that global warming is a threat to their lifestyle within their lifetime. Concern over global warming often corresponds with economic downturns and national crisis such as 9/11 as Americans prioritize the economy and national security over environmental concerns. However the drop in concern in 2008 is unique compared to other environmental issues. Considered in the context of environmental issues, Americans consider global warming as a less critical concern than the pollution of rivers, lakes, and drinking water; toxic waste; fresh water needs; air pollution; damage to the ozone layer; and the loss of tropical rain forests. However, Americans prioritize global warming over species extinction and acid rain issues. Since 2000 the partisan gap has grown as Republican and Democratic views diverge.

Climate change opinion by country

United States, Europe, and Australia are the darkest while Africa, the Middle East, and Oceania are the lightest.
Proportion who reported knowing "something" or a "great deal" about global warming. Darker areas indicate a greater proportion of individuals aware, yellow indicates no data.
 
Latin America and Japan are the darkest while the remainder are either much lighter or mixed.
Proportion responding yes when asked, "Temperature rise is part of global warming or climate change. Do you think rising temperatures are [...] a result of human activities?"
 
The Americas, Europe, Australia, Kenya and Japan are the darkest. The remainder much lighter.
Proportion responding in 2008–09 that global warming was a serious personal threat.

Climate change opinion is the aggregate of public opinion held by the adult population. Cost constraints often restrict surveys to sample only one or two countries from each continent or focus on only one region. Because of differences among questions, wording, and methods—it is difficult to reliably compare results or to generalize them to opinions held worldwide.

In 2007–2008, the Gallup Poll surveyed individuals from 128 countries in the first comprehensive study of global opinions. The Gallup Organization aggregated opinion from the adult population fifteen years of age and older, either through the telephone or personal interviews, and in both rural and urban areas except in areas where the safety of interviewer was threatened and in scarcely populated islands. Personal interviews were stratified by population size or geography and cluster sampling was achieved through one or more stages. Although error bounds vary, they were all below ±6% with 95% confidence.

Weighting countries to a 2008 World Bank population estimate, 61% of individuals worldwide were aware of global warming, developed countries more aware than developing, with Africa the least aware. The median of people perceiving it as a threat was 47%. Latin America and developed countries in Asia led the belief that climate change was a result of human activities, while Africa, parts of Asia and the Middle East, and countries from the Former Soviet Union led in the opposite. Awareness often translates to concern, although of those aware, individuals in Europe and developed countries in Asia perceived global warming as a greater threat than others.

Views on climate change by region

Africa

People in Africa are relatively concerned about climate change compared to the Middle East and parts of Asia. However, they are less concerned than most of Latin America and Europe. Currently, 61% of people in Africa consider climate change to be a very serious problem, and 52% believe that climate change is harming people now. While 59% of Africans are worried about droughts or water shortages, only 16% are concerned about severe weather, and 3% are concerned about rising sea levels. Countries in Sub-Saharan Africa are especially troubled about increasing desertification even as they account for .04% of global carbon dioxide emissions. In Sub-Saharan Africa, the concern over climate change drops to only 34% of the population considering climate change to be a "very" or "somewhat serious issue". Even so, according to the Pew Research Center 2015 Global Attitudes Survey, some particular countries are more concerned than others. In Uganda 79% of people, 68% in Ghana, 45% in South Africa and 40% in Ethiopia consider climate change to be a very serious problem.

Latin America

Latin America has a larger percentage of people concerned with climate change than other regions of the world. 74% consider climate change to be a serious problem and 77% say that it is harming people now which is 20 points higher than the global median according to the Pew Research Center. 63% of people in Latin America are very concerned that climate change will harm them personally. When looked at more specifically, Mexico and Central America are the most worried at 81.5% believing that climate change is a very serious issue. South America is slightly less anxious at 75% and the Caribbean, at the relatively high rate of 66.7%, is the least concerned. Brazil is an important country in global climate change politics because it is the eleventh largest emitter and unlike other large emitter countries, 86% consider global warming to be a very serious problem. Compared to the rest of the world, Latin America is more consistently concerned with high percentages of the population worried about climate change. Further, in Latin America, 67% believe in personal responsibility for climate change and say that people will have to make major lifestyle modifications.

Europe

Europeans have a tendency to be more concerned about climate change than much of the world, with the exception of Latin America. However there is a divide between Eastern Europe, where people are less worried about climate change, and Western Europe. A global climate survey by the European Investment Bank showed that climate is the number one concern for Europeans. Most respondents said they were already feeling the effects of climate change. Many people believed climate change can still be reversed with 68% of Spanish respondents believing it can be reversed and 80% seeing themselves as part of the solution.

In Europe, there is a range from 88% to 97% of people feeling that climate change is happening and similar ranges are present for agreeing that climate change is caused by human activity and that the impacts of it will be bad. Generally Eastern European countries are slightly less likely to believe in climate change, or the dangers of it, with 63% saying it is very serious, 24% considering it to be fairly serious and only 10% saying it is not a serious problem. When asked if they feel a personal responsibility to help reduce climate change, on a scale of 0, not at all, to 10, a great deal, Europeans respond with the average score of 5.6. When looked at more specifically, Western Europeans are closer to the response of 7 while Eastern European countries respond with an average of less than 4. When asked if Europeans are willing to pay more for climate change, 49% are willing, however only 9% of Europeans have already switched to a greener energy supply. While a large majority of Europeans believe in the dangers of climate change, their feelings of personal responsibility to deal with the issue are much more limited. Especially in terms of actions that could already have been taken - such as having already switched to greener energies discussed above - one can see Europeans' feelings of personal responsibility are limited. 90% of Europeans interviewed for the European Investment Bank Climate Survey 2019 believe their children will be impacted by climate change in their everyday lives and 70% are willing to pay an extra tax to fight climate change.

Asia/Pacific

Asia and the Pacific have a tendency to be less concerned about climate change, except small island states, with developing countries in Asia being less concerned than developed countries. In Asia and the Pacific, around 45% of people believe that climate change is a very serious problem and similarly 48% believe that it is harming people now. Only 37% of people in Asia and the Pacific are very concerned that climate change will harm them personally. There is a large gap between developing Asia and developed Asia. Only 31% of developing Asia considers global warming to be a "very" or "somewhat" serious threat and 74% of developed Asia considers global warming to be a serious threat. It could be argued that one reason for this is that people in more developed countries in Asia are more educated on the issues, especially given that developing countries in Asia do face significant threats from climate change. The most relevant views on climate change are those of the citizens in the countries that are emitting the most. For example, in China, the world's largest emitter, 68% of Chinese people are satisfied with their government's efforts to preserve the environment. And in India, the world's third largest emitter, 77% of Indian people are satisfied with their country's efforts to preserve the environment. 80% of Chinese citizens interviewed in the European Investment Bank Climate Survey 2019 believe climate change is still reversible, 72% believe their individual behaviour can make a difference in addressing climate change.

Middle East

While the increasing severity of droughts and other dangerous realities are and will continue to be a problem in the Middle East, the region has one of the smallest rates of concern in the world. 38% believe that climate change is a very serious problem and 26% believe that climate change is harming people now. Of the four Middle Eastern countries polled in a Pew Global Study, on what is their primary concern, Israel, Jordan, and Lebanon named ISIS, and Turkey stated United States encroachment. 38% of Israel considers climate change to be a major threat to their country, 40% of Jordan, 58% of Lebanon and 53% of Turkey. This is compared to relatively high numbers of residents who believe that ISIS is a major threat to their country ranging from 63% to 97%. In the poll, 38% of the Middle East are concerned about drought and 19% are concerned about long periods of unusually hot weather. 42% are satisfied with their own country's current efforts to preserve the environment.

North America

U.S. Democrats (blue) and Republicans (red) have long differed in views of the importance of addressing climate change, with the gap widening in the late 2010s mainly through Democrats' share increasing by more than 30 points.
(Discontinuity resulted from survey changing in 2015 from reciting "global warming" to "climate change".)

North America has mixed perceptions on climate change ranging from Mexico and Canada that are both more concerned, and the United States, the world's second largest emitter, that is less concerned. Mexico is the most concerned about climate change of the three countries in North America. 90% consider climate change to be a very serious problem and 83% believe that climate change is harming people substantially right now. Canadians are also seriously concerned, 20% are extremely concerned, 30% are definitely concerned, 31% are somewhat concerned and only 19% are not very/not at all concerned about climate change. While the United States which is the largest emitter of CO2 in North America and the second largest emitter of CO2 in the world has the lowest degrees of concern about climate change in North America. While 61% of Americans say they are concerned about climate change, that is 30% lower than Mexico and 20% lower than Canada. 41% believe that climate change could impact them personally. Nonetheless, 70% of Americans believe that environmental protections are more important than economic growth according to a Yale climate opinion study. 76% of US citizens interviewed for the European Investment Bank Climate Survey 2019 believe developed countries have a responsibility to help developing countries address climate change.

United States

In 2009 Yale University conducted a study identifying global warming's "Six Americas". The report identifies six audiences with different opinions about global warming: The alarmed (18%), the concerned (33%), the cautious (19%), the disengaged (12%), the doubtful (11%) and the dismissive (7%). The alarmed and concerned make out the largest percentage and think something should be done about global warming. The cautious, disengaged and doubtful are less likely to take action. The dismissive are convinced global warming is not happening. These audiences can be used to define the best approaches for environmental action. The theory of the 'Six Americas' is also used for marketing purposes.

Opinions in the United States vary intensely enough to be considered a culture war.

In a January 2013 survey, Pew found that 69% of Americans say there is solid evidence that the Earth's average temperature has gotten warmer over the past few decades, up six points since November 2011 and 12 points since 2009.

A Gallup poll in 2014 concluded that 51 percent of Americans were a little or not at all worried about climate change, 24 percent a great deal and 25 percent a fair amount.

In 2015, 32 percent or Americans were worried about global warming as a great deal, 37 percent in 2016, and 45 percent in 2017. A poll taken in 2016 shows that 52% of Americans believe climate change to be caused by human activity, while 34% state it is caused by natural changes. Data is increasingly showing that 62 percent of Americans believe that the effects of global warming are happening now in 2017.

In 2016 GALLUP found that 64% of Americans are worried about global warming, 59% believed that global warming is already happening and 65% is convinced that global warming is caused by human activities. These numbers show that awareness of global warming is increasing in the United States

In 2019 GALLUP found that one-third of Americans blame unusual winter temperatures on climate change.

In 2019 the Yale Program on Climate Change Communication found that 69% of Americans believe that climate change is happening. Additionally, their research also found that Americans think that only 54% of the country believes that climate change is happening. These figures show that there is a disconnect between perceived public perception of the issue and reality.

Differences between regions

While climate change will affect the entire world, opinion differences between regions of the world about these affects vary significantly. The Middle East has one of the smallest rates of concern in the world, especially compared to Latin America. Europe and Africa have mixed views on climate change but lean towards action by a significant degree. Europeans focus substantially on climate change when compared to United States residents, which are less concerned than the global median, even as the United States is the second biggest emitter in the world. Droughts/water shortages are one of the biggest fears about the impacts of climate change, especially in Latin America and Africa. Developed countries in Asia have levels of concern about climate change similar to Latin America which has one of the highest rates of concern. This is surprising as developing countries in Asia have levels of worry similar to the Middle East, one of the areas with the lowest levels of concern. Large emitters such as China usually ignore issues surrounding climate change as people in China have very low levels of concern about it. The only significant exception to this tendency by large emitters, is Brazil and India . India I'd the third and Brazil is eleventh biggest emitter in the world and are countries that have high levels of concern about climate change, levels similar to much of Latin America.

Percentage in each region who agree with statements regarding climate change (in 2015)
 
Region Climate change is a very serious problem Climate change is harming people now Very concerned that climate change will harm me personally
Africa 61% 52% 61%
Latin America 74% 77% 63%
Europe 54% 60% 27%
Asia/Pacific 45% 48% 37%
Middle East 38% 26% 27%
United States 45% 41% 30%
China 18% 49% 15%
Global Median 54% 51% 40%

Source: Pew Research Center's Spring 2015 Global Attitudes Survey - Q32, Q41 & Q42

Percentage of each country polled who agree with statement (in 2015)
 
Country Climate change is a very serious problem
Canada 51%
U.S. 45%
France 56%
Italy 55%
Germany 55%
Spain 53%
UK 41%
Poland 19%
Russia 33%
Ukraine 80%
Lebanon 67%
Jordan 44%
Palestine 38%
Turkey 37%
Israel 24%
India 76%
Philippines 72%
Vietnam 69%
South Korea 48%
Japan 45%
Malaysia 44%
Australia 43%
Indonesia 41%
Pakistan 29%
China 18%
Brazil 86%
Chile 77%
Peru 75%
Venezuela 72%
Mexico 66%
Argentina 59%
Burkina Faso 79%
Uganda 76%
Ghana 68%
Kenya 62%
Nigeria 61%
Senegal 58%
Tanzania 57%
South Africa 45%
Ethiopia 40%

Source: Pew Research Center's Spring 2015 Global Attitudes Survey - Q32

Developing countries vs developed countries

Awareness about climate change is higher in developed countries than in developing countries. A large majority of people in Indonesia, Pakistan and Nigeria do not know about climate change, particularly in Muslim majority countries. There is often awareness about environmental changes in developing countries, but the framework for understanding it is limited. In developing and developed countries, people similarly believe that poor countries have a responsibility to act on climate change. Since the 2009 Copenhagen summit, concern over climate change in wealthy countries has gone down. In 2009, 63% of people in OECD member states considered climate change to be "very serious" but by 2015, it had gone down to 48%. Support for national leadership creating further action addressing climate change has also gone down. Of the 21 countries surveyed in GlobeScan's 2015 survey, Canada, France, Spain and the UK are the only ones that have the majority of the population desiring their leadership to take further action to meet the emission targets set by the Paris climate accord. While concern and desire for action has gone down in developed countries, awareness over it is higher. Since 2000, twice as many people will connect extreme weather events with human caused climate change.

Inequality (mathematics)

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