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The Lead

They know the drill: UW leads the league in boring through ice sheets

October 31, 2014 10:10 am | by David Tenenbaum, Univ. of Wisconsin | News | Comments

Wisconsin is famous for its ice fishers. Less well known are the state’s big-league ice drillers. Hollow coring drills designed and managed by the Univ. of Wisconsin-Madison have been instrumental to new research published this week documenting carbon dioxide in the atmosphere between 23,000 and 9,000 years ago, based on data from an 11,000-foot hole in Antarctica.

Climate change beliefs more influenced by long-term temperature fluctuations

October 31, 2014 8:14 am | by Phil Ciciora, Business & Law Editor, Univ. of Illinois, Urbana-Champaign | News | Comments

In spite of the broad scientific consensus about its existence, global warming remains a...

Global natural gas boom alone won’t slow climate change

October 16, 2014 9:14 am | by Mary Beckman, Pacific Northwest National Laboratory | News | Comments

A new analysis of global energy use, economics and the climate shows that without new climate...

Argonne researchers create more accurate model for greenhouse gases from peatlands

October 6, 2014 8:50 am | by Louise Lerner, Argonne National Laboratory | News | Comments

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Ocean warming in Southern Hemisphere underestimated

October 6, 2014 8:45 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | News | Comments

Using satellite observations and a large suite of climate models, Lawrence Livermore National Laboratory scientists have found that long-term ocean warming in the upper 700 m of Southern Hemisphere oceans has likely been underestimated.

California drought linked to climate change

September 30, 2014 9:42 am | by Ker Than, Stanford Univ. | Videos | Comments

The atmospheric conditions associated with the unprecedented drought currently afflicting California are "very likely" linked to human-caused climate change, according to Stanford Univ. scientists. The team used a combination of computer simulations and statistical techniques to show that a persistent region of high atmospheric pressure hovering over the Pacific Ocean was likely to form from modern greenhouse gas concentrations.

Technology tracks tiniest pollutants in real time

September 26, 2014 8:23 am | by Brett Israel, Georgia Institute of Technology | News | Comments

Researchers may soon have a better idea of how tiny particles of pollution are formed in the atmosphere. These particles, called aerosols, are hazardous to human health and contribute to climate change, but researchers know little about how their properties are shaped by chemical reactions in the atmosphere. Unraveling this chemistry could someday lead to more effective policies to protect human health and the Earth’s climate.

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Biochar alters water flow to improve sand, clay

September 25, 2014 8:00 am | by David Ruth, Rice Univ. | News | Comments

As more gardeners and farmers add ground charcoal, or biochar, to soil to both boost crop yields and counter global climate change, a new study by researchers at Rice Univ. and Colorado College could help settle the debate about one of biochar’s biggest benefits: the seemingly contradictory ability to make clay soils drain faster and sandy soils drain slower.

China, U.S., India push world carbon emissions up

September 22, 2014 9:42 am | by Seth Borenstein, AP Science Writer | News | Comments

Spurred chiefly by China, the United States and India, the world spewed far more carbon pollution into the air last year than ever before. The world pumped an estimated 39.8 billion tons of carbon dioxide into the air last year by burning coal, oil and gas. That is 778 million tons or 2.3% more than the previous year. World leaders gather this week to discuss how to reduce heat-trapping gases. 

Early Earth less hellish than previously thought

September 16, 2014 7:53 am | by David Salisbury, Vanderbilt Univ. | News | Comments

Conditions on Earth for the first 500 million years after it formed may have been surprisingly similar to the present day, complete with oceans, continents and active crustal plates. This alternate view of Earth’s first geologic eon, called the Hadean, has gained substantial new support from the first detailed comparison of zircon crystals that formed more than 4 billion years ago with those formed contemporaneously in Iceland.

The ozone hole has stabilized, but some questions remain

September 11, 2014 4:50 pm | News | Comments

The production and consumption of chemical substances threatening the ozone layer has been regulated since 1987 in the Montreal Protocol. Eight international expert reports have since been published, the most recent of which was presented on Sept. 10 at the United Nations Headquarters in New York. Model calculations reveal that by 2050 the ozone layer may return to its 1980 levels.

Study links polar vortex chills to melting sea ice

September 3, 2014 9:02 am | by Seth Borenstein, AP Science Writer | News | Comments

Remember the polar vortex, the huge mass of Arctic air that can plunge much of the U.S. into the deep freeze? You might have to get used to it. A new study says that as the world gets warmer, parts of North America, Europe and Asia could see more frequent and stronger visits of that cold air. Researchers say that's because of shrinking ice in the seas off Russia.

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Snowfall in a warmer world

August 27, 2014 2:26 pm | by Jennifer Chu, MIT News Office | News | Comments

If ever there were a silver lining to global warming, it might be the prospect of milder winters. After all, it stands to reason that a warmer climate would generate less snow. But a new Massachusetts Institute of Technology study suggests that you shouldn’t put your shovels away just yet.

Pacific plate shrinking as it cools

August 27, 2014 7:47 am | by Mike Williams, Rice Univ. | News | Comments

The tectonic plate that dominates the Pacific “Ring of Fire” is not as rigid as many scientists assume, according to researchers at Rice Univ. and the Univ. of Nevada. The researchers have determined that cooling of the lithosphere makes some sections of the Pacific plate contract horizontally at faster rates than others and cause the plate to deform.

Study: Existing power plants will spew 300 billion tons of carbon dioxide during use

August 26, 2014 4:33 pm | News | Comments

According to Univ. of California Irvine and Princeton Univ. scientists, existing power plants around the world will pump out more than 300 billion tons of carbon dioxide over their expected lifetimes, significantly adding to atmospheric levels of the climate-warming gas. The findings are the first to quantify how quickly these "committed" emissions are growing.

UN panel: Global warming human-caused, dangerous

August 26, 2014 3:25 pm | by Seth Borenstein - AP Science Writer - Associated Press | News | Comments

Global warming is here, human-caused and probably already dangerous—and it's increasingly likely that the heating trend could be irreversible, a draft of a new international science report says. The United Nations' Intergovernmental Panel on Climate Change on Monday sent governments a final draft of its synthesis report, which combines three earlier, gigantic documents by the Nobel Prize-winning group.

New project is the ACME of addressing climate change

August 26, 2014 8:40 am | News | Comments

Eight U.S. Dept. of Energy national laboratories are combining forces to use high performance computing to build the most complete climate and Earth system model yet devised. The project, called Accelerated Climate Modeling for Energy, or ACME, is designed to accelerate the development and application of fully coupled, state-of-the-science Earth system models for scientific and energy applications.

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Cause of global warming hiatus found deep in Atlantic Ocean

August 22, 2014 9:34 am | by Hannah Hickey, Univ. of Washington | News | Comments

Following rapid warming in the late 20th century, this century has so far seen surprisingly little increase in the average temperature at the Earth’s surface. At first this was a blip, then a trend, then a puzzle for the climate science community. More than a dozen theories have now been proposed for the so-called global warming hiatus, ranging from air pollution to volcanoes to sunspots.

Sunlight controls the fate of carbon released from thawing Arctic permafrost

August 22, 2014 9:20 am | by Bernie DeGroat, Univ. of Michigan | News | Comments

Just how much Arctic permafrost will thaw in the future and how fast heat-trapping carbon dioxide will be released from those warming soils is a topic of lively debate among climate scientists. To answer those questions, scientists need to understand the mechanisms that control the conversion of organic soil carbon into carbon dioxide gas. Until now, researchers believed that bacteria were largely responsible.

No one-size-fits-all approach in a changing climate, land

August 19, 2014 7:31 am | by Kelly April Tyrrell, Univ. of Wisconsin-Madison | News | Comments

As climate change alters habitats for birds and bees and everything in between, so too does the way humans decide to use land. Researchers have, for the first time, found a way to determine the potential combined impacts of both climate and land-use change on plants, animals and ecosystems across the country.

Snow has thinned on Arctic sea ice

August 13, 2014 11:30 am | by Hannah Hickey, Univ. of Washington | News | Comments

From research stations drifting on ice floes to high-tech aircraft radar, scientists have been tracking the depth of snow that accumulates on Arctic sea ice for almost a century. Now that people are more concerned than ever about what is happening at the poles, research led by the Univ. of Washington and NASA confirms that snow has thinned significantly in the Arctic, particularly on sea ice in western waters near Alaska.

New research links tornado strength, frequency to climate change

August 7, 2014 9:24 am | by Kathleen Haughney, Florida State Univ. | News | Comments

A Florida State Univ. geography professor has shown that climate change may be playing a key role in the strength and frequency of tornadoes hitting the United States. though tornadoes are forming fewer days per year, they are forming at a greater density and strength than ever before. Instead of one or two forming on a given day in an area, there might be three or four occurring.

Scientists uncover combustion mechanism to better predict warming by wildfires

August 5, 2014 11:02 am | by Nancy Ambrosiano, Los Alamos National Laboratory | News | Comments

Scientists have uncovered key attributes of so-called “brown carbon” from wildfires, airborne atmospheric particles that may have influenced current climate models that failed to take the material’s warming effects into account. The work was described by a collaborative team of researchers from Los Alamos National Laboratory, Carnegie Mellon Univ. and the Univ. of Montana in Nature Geosciences.

Climate change research goes to the extremes

July 30, 2014 11:50 am | by Angela Herring, Northeastern Univ. | News | Comments

By now, most sci­en­tists agree that the tem­per­a­ture of the planet is rising and that the increase is due to human activ­i­ties. But the jury still out regarding the vari­ability of that increase. Researchers using “big data” computational tools have recently taken a systematic approach to answering this question and their results point to both higher global temperatures and increasing variability among those temperature extremes.

Huge waves measured for first time in Arctic Ocean

July 30, 2014 8:03 am | by Hannah Hickey, Univ. of Washington | News | Comments

As the climate warms and sea ice retreats, the North is changing. An ice-covered expanse now has a season of increasingly open water that is predicted to extend across the whole Arctic Ocean before the middle of this century. Storms thus have the potential to create Arctic swell. A Univ. of Washington researcher made the first study of waves in the middle of the Arctic Ocean, and detected house-sized waves during a September 2012 storm.

Not in my backyard: U.S. sending dirty coal abroad

July 28, 2014 10:48 am | by Dina Cappiello, Associated Press | News | Comments

As the Obama administration weans the U.S. off dirty fuels blamed for global warming, energy companies have been sending more of America's unwanted energy leftovers to other parts of the world where they could create even more pollution. This fossil fuel trade threatens to undermine the president's strategy for reducing the gases blamed for climate change and also reveals a side effect of countries acting alone on a global problem.

Climate change, air pollution will combine to curb food supplies

July 28, 2014 9:18 am | by David L. Chandler, MIT News Office | News | Comments

Many studies have shown the potential for global climate change to cut food supplies. But these studies have, for the most part, ignored the interactions between increasing temperature and air pollution. A new study shows that these interactions can be quite significant, suggesting that policymakers need to take both warming and air pollution into account in addressing food security.

World breaks monthly heat record two times in a row

July 23, 2014 8:54 am | by Seth Borenstein, AP Science Writer | News | Comments

The globe is on a hot streak, setting a heat record in June. That's after the world broke a record in May. The National Oceanic and Atmospheric Administration announced this week that last month's average global temperature was 61.2 degrees, which is 1.3 degrees higher than the 20th century average. It beat 2010's old record by one-twentieth of a degree.

Study: Global warming “pause” reflects natural fluctuation

July 22, 2014 9:06 am | News | Comments

According to recent research from McGill Univ., statistical analysis of average global temperatures between 1998 and 2013 shows that the slowdown in global warming during this period is consistent with natural variations in temperature. The study concludes that a natural cooling fluctuation during this period largely masked the warming effects of a continued increase in man-made emissions of carbon dioxide and other greenhouse gases.

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