This is a re-post from Significant Figures by Peter Gleick
National academies of sciences from around the world have published formal statements and declarations acknowledging the state of climate science, the fact that climate is changing, the compelling evidence that humans are responsible, and the need to debate and implement strategies to reduce emissions of greenhouse gases. Not a single national science academy disputes or denies the scientific consensus around human-caused climate change. A few examples of joint academy statements since 2000 on climate are listed here. Many national academies have, in addition, published their own reports and studies on climate issues. These are not included here.
http://science.sciencemag.org/content/292/5520/1261
Following the release of the third in the ongoing series of international reviews of climate science conducted by the Intergovernmental Panel on Climate Chang (IPCC), seventeen national science academies issued a joint statement, entitled “The Science of Climate Change,” acknowledging the IPCC study to be the scientific consensus on climate change science.
The seventeen signatories were:
http://nationalacademies.org/onpi/06072005.pdf
Eleven national science academies, including all the largest emitters of greenhouse gases, signed a statement that the scientific understanding of climate change was sufficiently strong to justify prompt action. The statement explicitly endorsed the IPCC consensus and stated:
“…there is now strong evidence that significant global warming is occurring. The evidence comes from direct measurements of rising surface air temperatures and subsurface ocean temperatures and from phenomena such as increases in average global sea levels, retreating glaciers, and changes to many physical and biological systems. It is likely that most of the warming in recent decades can be attributed to human activities (IPCC 2001). This warming has already led to changes in the Earth’s climate.”
The eleven signatories were: Brazil, Canada, China, France, Germany, India, Italy, Japan, Russia, the United Kingdom, and the United States.
http://www.pik-potsdam.de/aktuelles/nachrichten/dateien/G8_Academies%20Declaration.pdf
In 2007, thirteen national academies issued a joint declaration reconfirming previous statements and strengthening language based on new research from the fourth assessment report of the IPCC, including the following:
“In 2005, the Academies issued a statement emphasizing that climate change was occurring and could be attributed mostly to human activities, and calling for efforts to tackle both the causes of climate change and the inevitable consequences of past and unavoidable future emissions. Since then the IPCC has published the Working Group 1 part of the Summary for Policymakers of its fourth assessment report, and further reports are expected later this year from IPCC. Recent research strongly reinforces our previous conclusions. It is unequivocal that the climate is changing, and it is very likely that this is predominantly caused by the increasing human interference with the atmosphere. These changes will transform the environmental conditions on Earth unless counter-measures are taken.”
The thirteen signatories were the national science academies of Brazil, Canada, China, France, Germany, Italy, India, Japan, Mexico, Russia, South Africa, the United Kingdom, and the United States.
http://www.interacademies.net/File.aspx?id=4825
In 2007, the Network of African Science Academies submitted a joint “statement on sustainability, energy efficiency, and climate change:”
“A consensus, based on current evidence, now exists within the global scientific community that human activities are the main source of climate change and that the burning of fossil fuels is largely responsible for driving this change. The Intergovernmental Panel on Climate Change (IPCC) reached this conclusion with ’90 percent certainty’ in its Fourth Assessment issued earlier this year. The IPCC should be congratulated for the contribution it has made to public understanding of the nexus that exists between energy, climate and sustainability.”
The thirteen signatories were the science academies of Cameroon, Ghana, Kenya, Madagascar, Nigeria, Senegal, South Africa, Sudan, Tanzania, Uganda, Zambia, Zimbabwe, as well as the African Academy of Sciences.
In December 2007, the General Assembly of the Polish Academy of Sciences (Polska Akademia Nauk), issued a declaration endorsing the IPCC conclusions, and stating (in translation):
The problem of global warming, climate change and their negative impact on the human life and the functioning of the whole society is one of the most dramatic of contemporary challenges. The most recent studies indicate that the content of carbon dioxide in the atmosphere increased in the last century by about 25%. If you add to that a similar increase in the presence in the atmosphere of other harmful gases generated by human activity, overall, the effective increase in the amount of these gases in the period under consideration is about 40% and the specific acceleration gained over the past decades. This makes that the situation extremely worrisome…
It is the duty of science and Polish state authorities to develop thoughtful, organized and active efforts in the implementation of these ideas. Priority should be given to vast and diversified areas of research, including physical and biochemical mechanisms of climate change and their mathematical modeling. It should also develop appropriate technical measures and rules for their implementation, and legal and economic regulations limiting the emission of so-called greenhouse gases in all areas of economic activity of the state.
It is also necessary to take measures aimed to understand society-scale threats and response measures. The General Assembly of the Academy calls on national scientific communities and the state authorities to actively support Polish participation in this important endeavor.
We believe that the right step to counteract the effects of global warming require, under the auspices of the Polish Academy of Sciences, a Special Program to counteract climate threats and their consequences…
http://www.nationalacademies.org/includes/climatechangestatement.pdf
In 2008, the thirteen signers of the 2007 joint academies declaration issued a statement reiterating previous statements and reaffirming
“that climate change is happening and that anthropogenic warming is influencing many physical and biological systems.”
Among other actions, the declaration urges all nations to
“(t)ake appropriate economic and policy measures to accelerate transition to a low carbon society and to encourage and effect changes in individual and national behaviour.”
The thirteen signatories were the national science academies of Brazil, Canada, China, France, Germany, Italy, India, Japan, Mexico, Russia, South Africa, the United Kingdom, and the United States.
http://www.leopoldina.org/en/press/press-releases/press-release/press/713/
In May 2009, thirteen national academies issued a joint statement that said among other things:
“The IPCC 2007 Fourth Assessment of climate change science concluded that large reductions in the emissions of greenhouse gases, principally CO2, are needed soon to slow the increase of atmospheric concentrations, and avoid reaching unacceptable levels. However, climate change is happening even faster than previously estimated; global CO2 emissions since 2000 have been higher than even the highest predictions, Arctic sea ice has been melting at rates much faster than predicted, and the rise in the sea level has become more rapid. Feedbacks in the climate system might lead to much more rapid climate changes. The need for urgent action to address climate change is now indisputable.”
The thirteen signatories were the national science academies of Brazil, Canada, China, France, Germany, Italy, India, Japan, Mexico, Russia, South Africa, the United Kingdom, and the United States.
Statement on the health co-benefits of policies to tackle climate change
It is widely agreed that human activities are changing Earth’s climate beyond natural climatic fluctuations. The emission and accumulation of greenhouse gases associated with the burning of fossil fuels, along with other activities, such as land use change, are the principal causes of climate change…
Climate change poses a significant threat to human health in many direct and indirect ways…
Although there are some uncertainties about the magnitude of climate change and its impacts, there is widespread consensus that to mitigate climate change and reduce its impact on health, near term deep cuts in global greenhouse gas emissions are needed. Actions should be greatest in those high-income countries that have benefited most from burning fossil fuels. The longer we delay, the more severe the impacts on health, the environment and the economy; and the greater the future cost of mitigation. Since some degree of climate change is now inevitable, countries will have to adapt to the associated health risks…
Signatories
The Royal Society and the US National Academy of Science jointly published the document “Climate Change: Evidence and Causes.” Given their similar missions to “promote the use of science to benefit society and to inform critical policy debates,” the Academies “offer this new publication as a key reference document for decision makers, policy makers, educators, and other individuals seeking authoritative answers about the current state of climate-change science.”
“La teneur de l’atmosphère en GES a fortement et régulièrement augmenté dans les dernières décennies. Une analyse approfondie de ces GES, notamment de leur composition isotopique, montre sans équivoque que cette modification de la composition de l’atmosphère est, directement ou indirectement, liée à l’activité humaine (origine anthropique)…
La rapidité du changement climatique global annoncé est vraisemblablement sans précédent…
Dans ces conditions, la communauté internationale doit s’engager résolument, et globalement, dans une démarche volontariste et ambitieuse de réduction des émissions de gaz à effet de serre.
https://royalsociety.org/~/media/policy/Publications/2015/21-07-15-climate-communique.PDF
In July 2015, the Royal Society and member organizations issued a joint “U.K. Science Communiqué on Climate Change.” In part, that statement reads:
“The scientific evidence is now overwhelming that the climate is warming and that human activity is largely responsible for this change through emissions of greenhouse gases.
Governments will meet in Paris in November and December this year to negotiate a legally binding and universal agreement on tackling climate change.
Any international policy response to climate change must be rooted in the latest scientific evidence. This indicates that if we are to have a reasonable chance of limiting global warming in this century to 2°C relative to the pre-industrial period, we must transition to a zero-carbon world by early in the second half of the century.
To achieve this transition, governments should demonstrate leadership by recognising the risks climate change poses, embracing appropriate policy and technological responses, and seizing the opportunities of low-carbon and climate-resilient growth.”
Signatories
Facing critical decisions on climate change in 2015
The science of climate change reported by the IPCC Fourth Assessment (2007) and Fifth Assessment (2014) have been thoroughly evaluated by numerous national academies (e.g. Royal Society/National Academy of Sciences, Royal Swedish Academy of Sciences) and by international bodies. Advances in science and technology have increased our knowledge of how to mitigate climate change, uncertainties in the scientific analysis continue to be addressed, co-benefits of mitigation to health have been revealed, and new business opportunities have been found. EASAC remains concerned, however, that progress in turning this substantial evidence base into an international policy response has so far failed to match the full magnitude and urgency of the problem…
Even if emissions of GHG stopped altogether, existing concentrations of GHG in the atmosphere would continue to exert a warming effect for a long time. Whatever measures are put in place to reduce the intensity of global human-induced climate forcing, building resilience through adaptation will be necessary to provide more resilience to the risks already emerging as a result of climate change…
Signatories/Members of the European Academies Science Advisory Council
[This list is not a complete summary of the many individual or joint statements of national academies of sciences. Please send additions and corrections to pgleick@pacinst.org)
Posted by Guest Author on Friday, 27 January, 2017
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