Climate Deniers Turn Up Heat on Science Societies

Scientists within the most venerated science organizations in the United States are mounting rebellions against those organizations and their somewhat unified policy on the science of climate change–that it is real and being driven by human activities.

A group of several hundred of 47,000 physicists have unsuccessfully proposed new language for the American Physical Society.
It reads

Greenhouse gas emissions, such as carbon dioxide, methane, and nitrous oxide, accompany human industrial and agricultural activity. While substantial concern has been expressed that emissions may cause significant climate change, measured or reconstructed temperature records indicate that 20th 21st century changes are neither exceptional nor persistent, and the historical and geological records show many periods warmer than today. In addition, there is an extensive scientific literature that examines beneficial effects of increased levels of carbon dioxide for both plants and animals.

Studies of a variety of natural processes, including ocean cycles and solar variability, indicate that they can account for variations in the Earth’s climate on the time scale of decades and centuries. Current climate models appear insufficiently reliable to properly account for natural and anthropogenic contributions to past climate change, much less project future climate.

The APS supports an objective scientific effort to understand the effects of all processes – natural and human –on the Earth’s climate and the biosphere’s response to climate change, and promotes technological options for meeting challenges of future climate changes, regardless of cause.

On Tuesday, the APS decided to let its current national climate policy statement, which was adopted in November 2007 and reaffirmed last year, stand.
It reads:

Emissions of greenhouse gases from human activities are changing the atmosphere in ways that affect the Earth’s climate. Greenhouse gases include carbon dioxide as well as methane, nitrous oxide and other gases. They are emitted from fossil fuel combustion and a range of industrial and agricultural processes.

The evidence is incontrovertible: Global warming is occurring. If no mitigating actions are taken, significant disruptions in the Earth’s physical and ecological systems, social systems, security and human health are likely to occur. We must reduce emissions of greenhouse gases beginning now.

Because the complexity of the climate makes accurate prediction difficult, the APS urges an enhanced effort to understand the effects of human activity on the Earth’s climate, and to provide the technological options for meeting the climate challenge in the near and longer terms. The APS also urges governments, universities, national laboratories and its membership to support policies and actions that will reduce the emission of greenhouse gases.

In October the 18 leading science organizations sent a letter (PDF) to the U.S. Senate, pledging assistance as the Congress enters deliberations to pass a law that would reduce greenhouse gas emissions.

It reads:

Dear Senator:

As you consider climate change legislation, we, as leaders of scientific
organizations, write to state the consensus scientific view.

Observations throughout the world make it clear that climate change is
occurring, and rigorous scientific research demonstrates that the
greenhouse gases emitted by human activities are the primary driver.
These conclusions are based on multiple independent lines of evidence,
and contrary assertions are inconsistent with an objective assessment of
the vast body of peer-reviewed science. Moreover, there is strong
evidence that ongoing climate change will have broad impacts on
society, including the global economy and on the environment. For the
United States, climate change impacts include sea level rise for coastal
states, greater threats of extreme weather events, and increased risk of
regional water scarcity, urban heat waves, western wildfires, and the
disturbance of biological systems throughout the country. The severity
of climate change impacts is expected to increase substantially in the
coming decades.

If we are to avoid the most severe impacts of climate change, emissions
of greenhouse gases must be dramatically reduced. In addition,
adaptation will be necessary to address those impacts that are already
unavoidable. Adaptation efforts include improved infrastructure design,
more sustainable management of water and other natural resources,
modified agricultural practices, and improved emergency responses to
storms, floods, fires and heat waves.

We in the scientific community offer our assistance to inform your
deliberations as you seek to address the impacts of climate change.

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