November 27, 2019 / Modified dec 17, 2019 10:23 a.m.

Episode 210: Using gravimetry from satellites to measure snowfall

How scientists use satellites in earth orbit to measure how much water we can use on the ground.

az science episode 210 satellite hero Earth-orbiting GRACE satellites work in tandem to acquire accurate surface data.


The Research Corporation for Science Advancement
Arizona Science

Using satellites to measure groundwater usage

This episode is supported by the The Research Corporation for Science Advancement.
Episode 210: University of Arizona atmospheric scientist Ali Behrangi

Each year, Arizonans rely on snowpack from the previous winter to provide water for the Colorado River. But scientists have long been aware that ground-based measurements of snowfall can be prone to error. University of Arizona hydrology and atmospheric scientist Ali Behrangi and other researchers are using a pair of earth orbiting satellites to test the accuracy of snow and rain gauges on the ground.

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