A dry river bed during a drought.

Changes to the Global Water Cycle

Mark Altaweel

Researchers are using Earth observation satellites to track changes to the global water cycle.

Map of drought conditions in the United States on March 23, 2021.

Half of the United States Will Continue to be Affected by Drought for Spring 2021

Caitlin Dempsey

Drought conditions in much of the United States are forecasted to continue for spring 2021.

Non-diverse tree populations like this orange grove can potentially make drought conditions worse. Photo: Cynthia Mendoza, USDA, Fresno Harlen Ranch in Fresno, CA, 2014, public domain.

New Findings on How Trees Impact Droughts

Katarina Samurović

Recently published research looked at the question of, "Instead of looking at how drought affects the forest, how might this go the other way around?"

Normalized difference vegetation index satellite images of the state before and during the drought. | Image courtesy Chunyu Dong/UCLA.

Climate Change is Intensifying Drought in Southern California

Caitlin Dempsey

Researchers from UCLA and Columbia University discovered that the 2012–16 drought impacted Southern California more severely than northern regions.

Virga. Photo: White Sands National Monument, NPS.

What is Negative Rainfall?

Katarina Samurović

Negative rain(fall) occurs when a particular area experiences more atmospheric evaporation than water downpour over a period of time.

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