GCPEx

Ground Validation and GPM

Ground validation radars.

The Global Precipitation Measurement (GPM) Core Observatory, launched on Feb. 27, 2015, from Tanegashima Space Center in Japan, will help advance our understanding of Earth's water and energy cycles, improve the forecasting of extreme events that cause natural disasters, and extend current capabilities of using satellite precipitation information to directly benefit society.

GCPEx Data Collection Summary and Example Observations

In total, 25 events were identified with two events classified as “clear air” flights conducted by the DC-8 to sample land surface emission characteristics.  Table 4 summarizes case date and time, event type, and airborne data collection during the field project.  Event total SWE amounts represent manual measurements taken by a Tretyakov gauge located inside a DFIR wind shield at CARE.  Precipitation types are characterized as rain (R), snow (S), or mixed precipitation that could include ice pellets (R/S).  Synoptic context/regime(s) were determined from the

GCPEx Wraps Up Cold Season Field Campaign

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For six weeks in Ontario, Canada, scientists and engineers lead a field campaign to study the science and mechanics of falling snow. The datasets retrieved will be used to generate algorithms which translate what the GPM Core satellite "sees" into precipitation rates, including that of falling snow. Ground validation science manager Walt Petersen gives a summary of the GCPEx field campaign. Field campaigns are critical in improving satellite observations and precipitation measurements. 

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