NASA scientists say satellite remote sensing can help determine when water will fall from the sky several weeks in advance. It can pinpoint how much water is available in snowpack and how much water is available in the ground. It’s crucial information during California’s drought.
Duane Waliser is a research scientist at NASA’s Jet Propulsion Laboratory. He’s using satellite remote sensing to predict a tropical weather pattern that produces heavy precipitation. It’s known as an “atmospheric river.”
“One of these rivers transports as much water at any given time as about five to ten Mississippi Rivers, so it’s very significant, and about 20-to-30 percent of that often ends up in the form of precipitation.”
Scientists can now forecast the weather pattern as much as four weeks in advance. The Department of Water Resources says the information will help the state better prepare and respond during droughts.
NASA's Announcement
![Nasa -Drought -Image Nasa -Drought -Image](/media/1292595/nasa-drought-image.jpg)
NASA Earth Observatory
![0226 Nasa Folsom Lake 0226 Nasa Folsom Lake](/media/1295947/0226 nasa folsom lake_600x201.jpg)
The severity of California's current drought is illustrated in these images of Folsom Lake, a reservoir in Northern California located 25 miles (40 kilometers) northeast of Sacramento. More on how NASA is partnering with
California Department of Water Resources.
California Department of Water Resources / NASA.gov
![In 2021, California saw everything from intense drought to torrential rain. Researchers and water agencies say that the future of the state’s drought depends on adapting to these shifts. Andrew Nixon / CapRadio; Associated Press, file](/cdn-cgi/image/format=auto,width=186,height=140,fit=crop/media/12262257/012622climatewhiplash-p.png)
January 28, 2022Last year, California saw everything from intense drought to torrential rain. Researchers and water agencies say that the future of the state’s drought depends on adapting to these shifts.
![Snow geese fly over the Sacramento River National Wildlife Refuge complex in Willows on Oct. 6, 2021. Photo by Nina Riggio for CalMatters](/cdn-cgi/image/format=auto,width=186,height=140,fit=crop/media/12261318/110221-birds-drought-nr-cm-517-p.jpg)
November 11, 2021As the drought dries up California’s wetlands, traveling birds such as ducks, geese and eagles are struggling to survive and breed. “This drought is bad. The odds are against us,” a state expert said.
![In this Sept. 23, 2013 file photo, water flows through fish diversion louvres at the John E. Skinner Delta Fish Protective Facility from the Clifton Court Forebay on its way to the Harvey O. Banks pumping plant, near Tracy, Calif. AP Photo/Rich Pedroncelli, file](/cdn-cgi/image/format=auto,width=186,height=140,fit=crop/media/12257099/021221_california-water-drought-p.jpg)
June 23, 2021Drought resilience depends on location but also extraordinary engineering — determining which California places are running out of water this year and which remain in good shape.
![Boaters fish on the Sacramento River outside of Isleton. Water supplies from the San Joaquin-Sacramento Delta are insufficient, so the state has warned thousands of users to halt pumping. Photo by Anne Wernikoff, CalMatters](/cdn-cgi/image/format=auto,width=186,height=140,fit=crop/media/12259071/061521_sanjoaquinsacramentoriverdelta_aw_sized_01_061721-p.jpg)
June 17, 2021About 4,300 users were issued notices to halt diversions from the Sacramento-San Joaquin Delta.
![Kayakers make a long trek to the water's edge at a drought-stricken Lake Mendocino, currently at 29% of normal capacity, in Ukiah, Calif., Sunday, May 23, 2021. California Gov. Gavin Newsom declared a drought emergency for most of the state. Josh Edelson / AP Photo](/cdn-cgi/image/format=auto,width=186,height=140,fit=crop/media/12258863/060521_droughtkayakersweb-p.jpg)
June 5, 2021Experts say the current drought is hotter and drier than previous ones, meaning water is evaporating faster.
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