Forests play an even greater role in Earth’s climate system than previously known, according to the most comprehensive assessment yet of the carbon storage potential of the world’s wooded areas.

Between 1990 and 2007, the planet’s tropical, temperate, and boreal forests absorbed about 2.4 (more…)

NASA will launch satellite technology next month that scientists say will provide a clearer understanding of how solar energy and aerosols affect Earth’s climate. Traveling at about 438 miles above the Earth over three years, the Glory satellite will collect data on the Sun’s total energy output and provide new details on the tiny aerosols that reflect and absorb those solar (more…)

If industrial carbon dioxide emissions continue unabated, atmospheric concentrations of CO2 could by 2100 reach levels not seen in at least 30 million years, when Earth’s average temperature was 25 to 30 degrees F warmer than today, according to an analysis by a U.S. scientist.

Writing in the journal, Science, Jeffrey Kiehl (more…)

How strong is your knowledge of climate change? If you’re the average American, sad to say you’d probably get a failing grade according to a new study by Yale University’s Project on Climate Change Communication. A shocking 57% of Americans recently surveyed got an “F,” indicating that there’s a steep hill to climb (more…)

Research conducted by the University of Bristol, and the University of Leeds in the UK have demonstrated that our climate models may be underestimating the effects of CO2 on global temperatures.

In the long term, the Earth’s temperature may be 30-50 per cent more sensitive to atmospheric carbon dioxide

than has previously been estimated, reports a new study published in Nature Geoscience this week.

The results show that components of the Earth’s climate system that vary over long timescales — such as land-ice and vegetation — have an important effect on this temperature sensitivity, but these factors are often neglected in current climate models.

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Interfering with the Earth’s climate system to counteract global warming is a controversial concept. But in an interview with Yale Environment 360, climate scientist Ken Caldeira talks about why he believes the world needs to better understand which geoengineering schemes might work and which are fantasy — or worse.

Atmospheric scientist Ken Caldeira first became known for his groundbreaking work on ocean acidification, a phrase originally coined as a headline for one of his papers. Of late, however, Caldeira’s research has led him into the controversial area of geoengineering — the large-scale, deliberate manipulation of the Earth’s climate system.

Many scientists have shied away from the subject because they feel it is a wrongheaded and dangerous path to pursue. But Caldeira — who heads a research lab at the Carnegie Institution for Science’s Department of Global Ecology at Stanford University — has not been so dismissive, in part because his climate modeling has demonstrated that some geoengineering schemes may indeed help reduce the risk of climate change. In fact, few scientists have thought harder about the moral, political, and environmental implications of geoengineering.
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