It’s Clear Humans Are Changing World’s Climate, Panel Says

by Mark Memmott, September 27, 2013 7:00 AM

 The Larsen B ice shelf on the Antarctic Peninsula, which is among the places where such ice has been breaking off.

The Larsen B ice shelf on the Antarctic Peninsula, which is among the places where such ice has been breaking off.

Mariano Caravaca /Reuters/Landov

Declaring that “human influence on the climate system is clear,” a U.N.-assembled panel of scientists “it is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century.”

The Intergovernmental Panel on Climate Change, which brings together hundreds of researchers from around the world, adds that “warming in the climate system is unequivocal and since 1950 many changes have been observed throughout the climate system that are unprecedented over decades to millennia.”

Looking ahead, panel co-chair Thomas Stocker warns that “continued emissions of greenhouse gases will cause further warming and changes in all components of the climate system. … Heat waves are very likely to occur more frequently and last longer. As the Earth warms, we expect to see currently wet regions receiving more rainfall, and dry regions receiving less, although there will be exceptions.” Continue reading “It’s Clear Humans Are Changing World’s Climate, Panel Says”

UN report: Humans are ‘dominant’ cause of global warming

By Ben Geman – 09/27/13 05:16 AM ET

A United Nations climate science panel has concluded global warming is “unequivocal” and there’s at least a 95 percent chance human activities are the main driver of temperature increases over the last six decades.

“Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia,” states Friday’s report from the UN’s Intergovernmental Panel on Climate Change (IPCC).

“Human influence has been detected in warming of the atmosphere and the ocean, in changes in the global water cycle, in reductions in snow and ice, in global mean sea level rise, and in changes in some climate extremes,” the report finds. “It is extremely likely that human influence has been the dominant cause of the observed warming since the mid-20th century.” Continue reading “UN report: Humans are ‘dominant’ cause of global warming”

New Satellite Data Confirms Major Arctic Ice Loss

WunderBlog

Dr. Jeff Masters

The stunning loss of Arctic sea ice extent in recent years is undeniable—satellite measurements have conclusively shown that half of the Arctic sea ice went missing in September 2012, compared to the average September during 1979 – 2000. But the extent of ice cover is not the best measure of how the fire raging in Earth’s attic is affecting sea ice—the total volume of the ice is more important.

Arctic sea ice volume in thousands of cubic kilometers during the September minimum in 1979 compared to 2012, as estimated by the University of Washington PIOMAS model. Arctic seas ice volume has declined by more than a factor of five. Image credit: Andy Lee Robinson Continue reading “New Satellite Data Confirms Major Arctic Ice Loss”

Climate Change Policies Face Challenges in Congress

During his second inaugural address on Jan. 21, President Obama announced that the United States will respond to the growing threat of climate change. Environmental advocates applaud the president for addressing this generation-defining problem and hope he will elaborate on his strategy for tackling climate change during tonight’s State of the Union address, but they recognize that the administration will face serious challenges in moving crucial policies forward.

New Report Identifies Necessary Steps for Reducing Greenhouse Gas Emissions

According to a new report released by the World Resource Institute last week, the U.S. will not be able to achieve a 17 percent reduction in greenhouse gas emissions by 2020, a pledge the U.S. made at the 2009 Conference of the Parties of the United Nations Framework Convention on Climate Change in Copenhagen, Denmark, unless it makes current emissions standards stricter. The report identifies several legal tools already available to federal and state governments to substantially reduce greenhouse gas emissions. It recommends the administration take four key steps to make good on its greenhouse gas reduction commitments. Continue reading “Climate Change Policies Face Challenges in Congress”

In Second Inaugural, Obama Makes Climate A Priority

January 22, 2013 5:28 PM
 "We will respond to the threat of climate change, knowing that the failure to do so would betray our children and future generations," President Obama said Monday during his second inaugural address.

“We will respond to the threat of climate change, knowing that the failure to do so would betray our children and future generations,” President Obama said Monday during his second inaugural address. John Moore/Getty Images

President Obama pulled out a surprise in his inaugural address on Monday. After barely mentioning climate change in his campaign, he put it on his short list of priorities for his second term.

“We will respond to the threat of climate change, knowing that the failure to do so would betray our children and future generations,” he said. Today the White House had scant detail on what the president plans to do. Continue reading “In Second Inaugural, Obama Makes Climate A Priority”

Democratic senators pass torch to EPA on climate change

Democratic senators pass torch to EPA on climate change

Epitavi/Shutterstock.com

After years of trying—and failing—to get climate-change legislation through Congress, top Senate Democrats are publicly ready to hand over the power to President Obama and the Environmental Protection Agency.

“A lot of people don’t recognize that EPA has huge authority to reduce carbon in the air,” Senate Environment and Public Works Committee Chairwoman Barbara Boxer, D-Calif., said at a briefing Tuesday. Continue reading “Democratic senators pass torch to EPA on climate change”

Miss Piggy’s Version Of Global Warming: What About Me?

January 19, 2013 5:54 AM

Here’s a new, sly, (and frankly selfish) way to think about global warming: instead of worrying about the whole planet and all its oceans, how about asking a more personal question …

What about me? What about where I live? Or where my grandma lives? Or the North Pole? Or Siberia? What if I could take my curser, plop it onto any place on Earth and find out what’s happened to temperatures right there. Continue reading “Miss Piggy’s Version Of Global Warming: What About Me?”

Fighting Misinformation about Climate Science

global warming

Fighting Misinformation about Climate Science

Union of Concerned Scientists calls out News Corporation for overwhelmingly misleading coverage of climate science

On September 21, 2012, the Union of Concerned Scientists hand-delivered nearly 20,000 postcards to News Corporation’s New York headquarters calling on News Corp. to stop misleading its audience about climate science.

The delivery culminated a UCS-sponsored event that highlighted the current state of climate science and its coverage in the media. The video above captures the highlights from the day’s activities in Bryant Park and outside News Corp. headquarters.

News Corporation misleads nearly 4 million viewers and readers on climate science

Our recent snapshot analysis, Is News Corp. Failing Science?, found that recent coverage of climate science in two of News Corp.’s flagship properties — Fox News Channel and the Wall Street Journal opinion pages — has been overwhelmingly misleading. Continue reading “Fighting Misinformation about Climate Science”