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NASA analyzes US east coast persistent rains

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John Nelson
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A stalled weather pattern led to persistent showers and thunderstorms moving up the eastern seaboard during the week of July 22, resulting in significant rainfall amounts and numerous flood warnings.

NASA utilized satellite data to analyze and tally the rainfall from the storms.

A nearly stationary elongated upper-level trough or elongated area of low pressure stretching down from the Great Lakes to Florida combined with a persistent Bermuda High off the coast to channel a steady flow of warm, humid air up the eastern seaboard.

That's where the Global Precipitation Measurement mission or GPM constellation of satellites comes in.

GPM is a joint mission between NASA and the Japan Aerospace Exploration Agency, JAXA and measures precipitation from space.

The Integrated Multi-satellitE Retrievals for GPM or IMERG is used to estimate precipitation from a combination of passive microwave sensors, including GPM's GMI microwave sensor and geostationary infrared data.

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