Earth System Science and Modeling

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For the past two decades, the southwestern United States has been desiccated by one of the most severe long-term droughts—or ‘megadroughts’—of the last 1,200 years. And now, scientists say the risk of similar extreme megadroughts and severe single-year droughts will increase in the future as Earth’s temperature continues to rise, according to a new study in Earth’s Future.

Results show the increasing frequency of these compound extremes is strongly driven by human-caused warming and drying trends.

Data from a US Forest Service campaign and the WE-CAN field campaign combine to estimate emission and exposure information for wildland firefighters.

A special issue of the open access journal Earth System Science Data features an in-depth look at the science behind NOAA's ATOMIC campaign. CPO's Climate Variability and Predictability (CVP) program was a major sponsor for the campaign.