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.
The large white “finger” in the center of the image is ice- and snow-covered Lake Simcoe.
This video shows a glimpse of operations during the NASA Global Precipitation Measurement (GPM) Cold Season Precipitation Experiment (GCPEx) during a heavy snow event on 18 February 2012