While drought is commonly defined by precipitation and runoff deficits, the study challenges this understanding by proposing a new definition: anthropogenic drought. Within human‐water systems, drought must be defined and understood as the complex and interrelated dynamics of both natural and human‐induced changes, the authors say.
“There has always been natural variability in drought events around the world, but our research shows the clear human influence on drying, specifically from anthropogenic aerosols, carbon dioxide, and other greenhouse gases,” said lead author Felicia Chiang from the University of California, Irvine.
New research highlights the application of reanalysis products, including the 20th Century Reanalysis Project (20CRv3), to understanding coastal hazards in a changing climate.
The advances described in 13 papers represent outcomes from research funded by the National Integrated Drought Information System (NIDIS) and Modeling, Analysis, Predictions and Projections (MAPP) programs, leveraging other U.S. agencies’ investments, and coordinated within the framework of the Third MAPP Drought Task Force (DTF3).
Americans’ health, security and economic wellbeing are tied to climate and weather. Every day, we see communities grappling with environmental challenges due to unusual or extreme events related to climate and weather.
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