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You are here: Home / Reserves / Sierra Nevada Aquatic Research Laboratory / Measuring snowpack from a plane

Measuring snowpack from a plane

September 11, 2014 By Kathleen Wong

Snowpack in California in 2014 (top) is far less than it was exactly a year earlier (2013), making accurate snowpack measurements critical. Images courtesy LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC
Snowpack in California in January 2014 (top) is far smaller than it was a year earlier (bottom), making snowpack measurements critical every year. Images courtesy LANCE/EOSDIS MODIS Rapid Response Team at NASA GSFC

An article and video about a project to gauge California’s snowpack from a plane are featured on National Geographic Daily News.

Much of the water delivered to the state over the dry summer and fall has traditionally been stored in the form of Sierra Nevada snows.

For decades, scientists have measured the amount of water stored in the mountains by visiting a handful of reference sites on snowshoes or skis several times per winter. Their measurements of snow depth and moisture content are used to calculate the year’s available water supply.

Now, NASA scientists have developed a new way to estimate snowpack using lasers aimed at the ground to estimate snow depth and measures of ground reflectance to estimate water content. While developing the system, the scientists have been based at the NRS’s Sierra Nevada Aquatic Research Laboratory. The researchers are currently testing the system in Yosemite National Park.

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