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Three Radars are Better than One Putting three radars on a plane to measure rainfall may seem like overkill. But for the Integrated Precipitation and Hydrology Experiment field campaign in North Carolina recently, more definitely was better. During the field campaign, NASA's ER-2 research aircraft flew out of Robins Air Force Base in Georgia. HIWRAP is under the wing in the black compartment; the Cloud Radar System is under the other wing and is not visible; and the EXRAD radar is in the extended nose cone. Image Credit: NASA / Gerry Heymsfield The three instruments, developed by the High...

An old adage about environmental stewardship goes, “Think Globally, Act Locally.” When it came to rainfall, however, Arthur Hou, project scientist for the Global Precipitation Measurement mission from 2005 until his passing on November 20, 2013, took an approach of Think Globally, Act Globally. "We need virtually continuous observations everywhere to construct a complete picture of precipitation around the globe, and that requires a lot of resources. Fortunately, precipitation does not recognize national boundaries. It is in the best interest of every nation to pool resources together to make...

Animation of NASA-JAXA's GPM satellite data of rain rates and internal structure of Hurricane Arthur on July 3 2014. Image Credit: NASA's Scientific Visualization Studio / JAXA Download the Hi-Res Video Here The Global Precipitation Measurement (GPM) Core Observatory flew over Hurricane Arthur five times between July 1 and July 5, 2014. Arthur is the first tropical cyclone of the 2014 Atlantic hurricane season. GPM is a joint mission between NASA and the Japan Aerospace Exploration Agency. The Core Observatory was launched Feb. 27 from Japan and began its prime mission on May 29, just in time...

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NASA's airborne Hurricane and Severe Storm Sentinel or HS3 mission, will revisit the Atlantic Ocean for the third year in a row. Image Credit: NASA's Goddard Space Flight Center/Ryan Fitzgibbons Download this video in HD formats from NASA Goddard's Scientific Visualization Studio During this year's Atlantic hurricane season, NASA is redoubling its efforts to probe the inner workings of hurricanes and tropical storms with two unmanned Global Hawk aircraft flying over storms and two new space-based missions. NASA's airborne Hurricane and Severe Storm Sentinel or HS3 mission, will revisit the...