Weather forecasting and tracking in the US is about to get much more accurate, according to the National Weather Service. The agency announced today that it has nearly completed a two-year long process of upgrades to the nation's Doppler weather radar units — 122 units have been upgraded out of a total 160, and the rest should be upgraded soon — outfitting them with new "dual polarization" technology. Nicknamed "dual-pol," by weather scientists, the technology gives weather radar units the ability to tell the difference between types of precipitation — rail, snow or hail — for the first time. It also lets scientists track flying debris kicked up in particularly dangerous storms like tornadoes, and provide advance warning to areas...
via The Verge - All Posts http://www.theverge.com/2013/4/25/4266146/national-weather-service-upgrades-radar-exact-precipitation
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