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Human activities are increasingly altering the Earth's climate. These effects add to natural influences that have been present over Earth's history. Scientific evidence strongly indicates that natural influences cannot explain the rapid increase in global near-surface temperatures observed during the second half of the 20th century. ... It is virtually certain that increasing atmospheric concentrations of carbon dioxide and other greenhouse gases will cause global surface climate to be warmer.
In endorsing the "Human Impacts on Climate" statement, the AAS recognizes the collective expertise of the AGU in scientific subfields central to assessing and understanding global change, and acknowledges the strength of agreement among our AGU colleagues that the global climate is changing and human activities are contributing to that change.
The AASC recognizes that human activities have an influence on the climate system.
"The Geological Society of America (GSA) supports the scientific conclusions that Earth’s climate is changing; the climate changes are due in part to human activities; and the probable consequences of the climate changes will be significant and blind to geopolitical boundaries.
"Engineers Australia believes that Australia must act swiftly and proactively in line with global expectations to address climate change as an economic, social and environmental risk... We believe that addressing the costs of atmospheric emissions will lead to increasing our competitive advantage by minimising risks and creating new economic opportunities. Engineers Australia believes the Australian Government should ratify the Kyoto Protocol."
"the AAPG membership is divided on the degree of influence that anthropogenic CO2 has on recent and potential global temperature increases
"There is now general agreement among scientific experts that the recent warming trend is real (and particularly strong within the past 20 years), that most of the observed warming is likely due to increased atmospheric greenhouse gas concentrations, and that climate change could have serious adverse effects by the end of this century. Current debates focus on the extent to which humans may be altering the pattern of natural change and appropriate policy responses. (...) The greatest challenges facing the global community include understanding how the global climate system works and how our own activities may be influencing it, as well as undertaking responsible actions to protect that system for our children. (...) The overwhelming balance of evidence indicates that reducing greenhouse gas emissions is the prudent and responsible course of action at this time. Although vigorous climate research is certainly needed to reduce uncertainties and to identify potential adverse effects, it should not forestall prudent action now to address the issue."
Studies ... show clear evidence of human influences on the climate system (due to changes in greenhouse gases, aerosols, and stratospheric ozone).
"We find that the evidence for human-induced climate change is now persuasive, and the need for direct action compelling."
The changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability. Human-induced warming and associated sea level rises are expected to continue through the 21st century... The IPCC's conclusion that most of the observed warming of the last 50 years is likely to have been due to the increase in greenhouse gas concentrations accurately reflects the current thinking of the scientific community on this issue
"There is new and stronger evidence that most of the warming observed over the last 50 years is attributable to human activities".
Furthermore:
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.
"We recognize the international scientific consensus of the Intergovernmental Panel on Climate Change (IPCC)."
"In the judgment of most climate scientists, Earth’s warming in recent decades has been caused primarily by human activities that have increased the amount of greenhouse gases in the atmosphere. ... On climate change, [the National Academies’ reports] have assessed consensus findings on the science..."
"The conclusions in this statement reflect the scientific consensus represented by, for example, the Intergovernmental Panel on Climate Change, and the Joint National Academies' statement."
Google Video Link |
And more than anything else, that requires accurate measurements of the real consequences –positive & negative- of all the important economic choices we make.
An Inconvenient Truth, page 270.
What is Consensus?
...
The root of consensus is the word consent, which means to give permission to. When you consent to a decision, you are giving your permission to the group to go ahead with the decision. You may disagree with the decision, but based on listening to everyone else’s input, all the individuals agree to let the decision go forward, because the decision is the best one the entire group can achieve at the current time.
What consensus is not
It is not unanimous agreement. Participants may consent to an decision they disagree with, but recognize meets the needs of the group and therefore give permission to.
Originally posted by IgnoranceIsntBlisss
And one last thing: Just because most scientists might agree that humans are or can be contributing to it doesn't mean that they support the Al Gore apocalyptic doomsday prophecies. To determine that after seeing that most scientists would agree to said contributions is heavily laden with logical fallacy, and this would especially go for Al Gore and his religious convictions (he actually said "It's a spiritual matter" on Larry King).
www.abovetopsecret.com...
Arctic Climate Impact Assessment
In 2004, the intergovernmental Arctic Council and the non-governmental International Arctic Science Committee released the synthesis report of the Arctic Climate Impact Assessment:
Climate conditions in the past provide evidence that rising atmospheric carbon dioxide levels are associated with rising global temperatures. Human activities, primarily the burning of fossil fuels (coal, oil, and natural gas), and secondarily the clearing of land, have increased the concentration of carbon dioxide, methane, and other heat-trapping ("greenhouse") gases in the atmosphere...There is international scientific consensus that most of the warming observed over the last 50 years is attributable to human activities.
European Academy of Sciences and Arts
In 2007, the European Academy of Sciences and Arts issued a formal declaration on climate change titled Let's Be Honest:
Human activity is most likely responsible for climate warming. Most of the climatic warming over the last 50 years is likely to have been caused by increased concentrations of greenhouse gases in the atmosphere. Documented long-term climate changes include changes in Arctic temperatures and ice, widespread changes in precipitation amounts, ocean salinity, wind patterns and extreme weather including droughts, heavy precipitation, heat waves and the intensity of tropical cyclones. The above development potentially has dramatic consequences for mankind’s future. [10]
InterAcademy Council:
As the representative of the world’s scientific and engineering academies,[11][12] the InterAcademy Council (IAC) issued a report in 2007 titled Lighting the Way: Toward a Sustainable Energy Future.
Current patterns of energy resources and energy usage are proving detrimental to the long-term welfare of humanity. The integrity of essential natural systems is already at risk from climate change caused by the atmospheric emissions of greenhouse gases.[13]
Concerted efforts should be mounted for improving energy efficiency and reducing the carbon intensity of the world economy.[14]
International Council of Academies of Engineering and Technological Sciences
In 2007, the International Council of Academies of Engineering and Technological Sciences (CAETS) issued a Statement on Environment and Sustainable Growth[15]:
As reported by the Intergovernmental Panel on Climate Change (IPCC), most of the observed global warming since the mid-20th century is very likely due to human-produced emission of greenhouse gases and this warming will continue unabated if present anthropogenic emissions continue or, worse, expand without control.
CAETS, therefore, endorses the many recent calls to decrease and control greenhouse gas emissions to an acceptable level as quickly as possible.
Joint science academies' statements
Network of African Science Academies
In 2007, the Network of African Science Academies submitted a joint “statement on sustainability, energy efficiency, and climate change” to the leaders meeting at the G8 Summit in Heiligendamm, Germany:
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 IPCC should be congratulated for the contribution it has made to public understanding of the nexus that exists between energy, climate and sustainability.[21]
We acknowledge, however, that Africa will need help from
the developed world if it is to successfully address the
challenges it faces and we are convinced of the vital roles
that the G8 governments and the international scientific
community can play in the promotion of science, technology
and innovation in Africa.
Royal Society of New Zealand
Having signed onto the first joint science academies' statement in 2001, the Royal Society of New Zealand released a separate statement in 2008 in order to clear up "the controversy over climate change and its causes, and possible confusion among the public":
The globe is warming because of increasing greenhouse gas emissions. Measurements show that greenhouse gas concentrations in the atmosphere are well above levels seen for many thousands of years. Further global climate changes are predicted, with impacts expected to become more costly as time progresses. Reducing future impacts of climate change will require substantial reductions of greenhouse gas emissions.
Polish Academy of Sciences
In December 2007, the General Assembly of the Polish Academy of Sciences (PAN) issued a statement endorsing the IPCC conclusions, and states:
it is the duty of Polish science and the national government to, in a thoughtful, organized and active manner, become involved in realisation of these ideas.
Problems of global warming, climate change, and their various negative impacts on human life and on the functioning of entire societies are one of the most dramatic challenges of modern times.
PAS General Assembly calls on the national scientific communities and the national government to actively support Polish participation in this important endeavor.
National Research Council (US)
In 2001, the Committee on the Science of Climate Change of the National Research Council published Climate Change Science: An Analysis of Some Key Questions.[24] This report explicitly endorses the IPCC view of attribution of recent climate change as representing the view of the scientific community:
The changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability. Human-induced warming and associated sea level rises are expected to continue through the 21st century... The IPCC's conclusion that most of the observed warming of the last 50 years is likely to have been due to the increase in greenhouse gas concentrations accurately reflects the current thinking of the scientific community on this issue[24].
American Association for the Advancement of Science
As the world's largest general scientific society, the American Association for the Advancement of Science adopted an official statement on climate change in 2006:
The scientific evidence is clear: global climate change caused by human activities is occurring now, and it is a growing threat to society....The pace of change and the evidence of harm have increased markedly over the last five years. The time to control greenhouse gas emissions is now.
Anticipated direct health consequences of climate change include injury and death from extreme weather events and natural disasters, increases in climate-sensitive infectious diseases, increases in air pollution–related illness, and more heat-related, potentially fatal, illness. Within all of these categories, children have increased vulnerability compared with other groups.
From: Keith Briffa
To: [email protected]
Subject: Re: quick note on TAR
Date: Sun Apr 29 19:53:16 2007
Mike
your words are a real boost to me at the moment. I found myself questioning the whole
process and being often frustrated at the formulaic way things had to be done - often
wasting time and going down dead ends. I really thank you for taking the time to say these
kind words . I tried hard to balance the needs of the science and the IPCC , which were not
always the same.
Originally posted by loam
Dude, no offense, but how many threads do you need to start saying the same thing over and over again?
The frenetic pace and repetitive nature of your posting is a real turn off.
Originally posted by loam
The frenetic pace and repetitive nature of your posting is a real turn off.
Originally posted by altered_states
If he/she had posted this thread in 2 months time would you still have the same opinion? or would you see he/she as dedicated person with a mission to prove...
Originally posted by altered_states
...that AL BORE and his BORITES are a bunch of power hungry scaremongering gimps...