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Distinguishing Between Low and High Climate Sensitivity in Climate Models
Department:March 2, 2021Source:Clouds have both cooling and warming effects on climate, so a climate model's ability to parse cloud effects can reduce uncertainty in future climate projections. A new study distinguishes between climate models with low and high climate sensitivity related to clouds and aerosols.
Department:March 2, 2021A warmer-than-average start to spring is favored for the central and eastern United States while a drier-than-average March is likely across the southern tier of the contiguous U.S.
New study identifies mountain snowpack most “at-risk” from climate change
Department:March 1, 2021A new study in Nature Climate Change finds regional variations in snowpack melt as temperatures rise. The researchers conclude that, in the United States, snowpack in coastal regions and the south is most “at-risk” from climate change while snowpack in the northern interior of the country is less vulnerable.
New Study Identifies Mountain Snowpack Most “At-Risk” from Climate Change
Department:March 1, 2021Source:Climate scientists identify regional variations in snowpack melt as temperatures increase and present a theory that explains which mountain snowpacks worldwide are most “at-risk” from climate...
Department:February 25, 2021La Niña has been going strong this winter, but the Northern Hemisphere doesn't appear to be paying attention. Our blogger discusses what may be going on.
Researchers make small but important step in seasonal tornado forecasting
Department:February 25, 2021Tornados, like most weather phenomena, are hard to predict more than several days in advance. By focusing on active tornado seasons that may be linked to climate signals, researchers at NOAA’s Atlantic Oceanographic and Meteorological Laboratory have made a small but important step in seasonal tornado that shows promise in predicting active seasons up to two months in advance.
Increasing risk of another Cape Town’s Day Zero drought in 21st century
Department:February 20, 2021The results of a new high-resolution climate model indicate that global warming made the 2018 Cape Town “Day Zero” drought five to six times more likely than it would have been in the 19th century. Models project that, without significant reductions in greenhouse gas emissions, such extreme droughts in the Cape Town region will become more frequent, occurring every few years or almost every year by the end of the 21st century.
Assessing the influence of COVID-19 on Earth’s radiative balance
Department:February 19, 2021Lockdowns intended to curb the spread of COVID-19 reduced human-made aerosol emissions in 2020, but the impact on Earth’s energy balance has been less clear. A new study finds that, over the East Asian Marginal Seas (between the coasts of China, Korea, and Japan) in March 2020, aerosol reductions contributed to a drastic drop in clear-sky reflection. Roughly a third of the drop can be attributed to reduced aerosols, and the rest can be attributed to weather variability and long-term emission trends.
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