He's an oceanographer and chairman of a group called the Artic Climate Impact Assessment.
Dr. ROBERT CORELL (Chairman, Arctic Climate Impact Assessment): Climate change is a real issue now.
Germany cannot do all this on its own, argues Ottmar Edenhofer of the Potsdam Institute for Climate Impact Research.
ECONOMIST: A nuclear phase-out leaves German energy policy in a muddle
It is "politically critical" that the United States indicate what it can do "in numerical terms" to reduce its climate impact, he added.
Moreover, U.S. emissions restrictions would have no real-world climate impact.
Based upon data from the paper, the cooling climate impact from the decrease in the average global cloud height more than offset the positive forcing from an increase in greenhouse gases from human activities in the last decade.
FORBES: An Unsettling Week For Global Warming's 'Settled Science'
"There is quite a lot of suppression and non-discussion of issues that are difficult, and one of those is in fact methane, " he said, recalling a reluctance on the part of at least one senior scientists involved in the Arctic Climate Impact Assessment to discuss the impact that a methane release might have.
"We used computer models to simulate the climate forcing impact of the observed changes in soot concentrations in Greenland snow during the past 215 years, " said co-author Mark Flanner from the University of California.
BBC: Human activities have left a visible mark on the Arctic
"The increase in flood risks are based on predictions of climate change impact so there are significant uncertainties, so we couldn't say definitely what the impact will be in terms of funding currently, " he said.
BBC: Flooding is expected to increase over the next 80 years
It also drew into the climate debate some libertarian bloggers who fear the impact of climate policies on individual freedoms and who temperamentally distrust authorities.
"To stand up and say that we in this country will benefit from climate change profoundly misunderstands the nature of the threat and the impact that climate change is going to have, " he warned.
Ten percent were unsure and 8 percent said the economic climate had no impact on capital spending plans.
Nearly 900 Scottish schools took part in the event, which was designed to highlight the impact climate change is having on people and nature.
Another aim of the Arctic Arc expedition, sponsored by Rolex, is to raise awareness of the impact climate change is having on the region among eight to 18-year-olds.
BBC: NEWS | Science/Nature | Arctic trek to map climate impacts
Bloomberg is the current chairman of C40, which was started in 2005 and is a network of cities around the world looking to implement local actions that can impact climate change.
What keeps climate scientists working away in our labs and in the field, is that we keep uncovering more evidence of how climate change will impact our planet and our lives.
Climate negotiators reported some progress to establish a fund to help mitigate the impact of climate change, even as they contended with the possibility that talks could end Friday without a global agreement to reduce emissions after 2020.
While correlations had been observed between disease transmission and local climate changes in some regions, "there is still much uncertainty about the potential impact of climate change on malaria at local and global scales, " it said.
In a recent study, the U.S. Joint Global Climate Change Research Institute, which is located at the University of Maryland, projected the impact of climate change on agricultural yields in Huang-Hai Plain, which is one of the most productive agricultural regions of China.
The United Nations-sponsored panel of 2, 500 climate scientists whose 1995 report is considered the most complete scientific effort to date to assess the potential impact of climate change.
Whether this debate will make a significant impact on climate change remains to be seen.
But despite this, knowledge about the impact of climate change on groundwater quantity and quality is limited.
Mason credits the company's environmental impact, climate change, governance, human rights and philanthropic efforts for the change.
With initiative like these, we can build more resilient societies better able to weather the impact of climate change.
We share a mutual commitment to address the global impact of climate change.
It aims to formulate recommendations on adapting the education systems of African countries to the impact of climate change.
But large reductions in carbon emissions would ameliorate climate change's impact, whether or not there are large volumes of trades.
The impact of climate change will also be felt in inland cities because of larger, wetter and more violent storms.
FORBES: Asia's Megacities Pose A Stark Environmental Challenge
In some places the impact of climate change may already be felt.
LONDON, England (CNN) -- Climate change's impact is felt most heavily in natural wildernesses such as the Arctic and the Amazon rainforest.
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