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VAWS: NESDIS Snowfall Rate Product and Assessment

Speakers: Huan Meng, NESDIS/Center for Satellite Applications and Research; and Wes Adkins, NWS/Juneau, Alaska Weather Forecast Office

An over land snowfall rate (SFR) product has been produced operationally at NOAA/NESDIS since 2012. The product utilizes measurements from passive microwave sensors aboard eight polar-orbiting satellites managed by NOAA, NASA, EUMETSAT, and DMSP.

The SFR algorithm consists of a statistical snowfall detection component and a 1DVAR-based physical snowfall rate estimation component. The product has been validated against gauge observations and radar snowfall rate estimates.

NASA SPoRT has also made it available in AWIPS and provides the product to some NWS WFOs at near real-time.

This seminar will include a description of the SFR product, algorithm validation, and its assessment at the Juneau and Anchorage WFOs.