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A summary of large raindrop observations from gpm gv field campaigns
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Carey, Lawrence Tokay, Ali Gatlin, Patrick N. Petersen, Walter Wingo, Matthew Bringi, V. N. Thurai, Merhala |
| Copyright Year | 2013 |
| Description | NASA's Global Precipitation Measurement Mission (GPM) has conducted as series of Ground Validation (GV) studies to assist algorithm development for the GPM core satellite. Characterizing the drop size distribution (DSD) for different types of precipitation systems is critical in order to accurately estimate precipitation across the majority of the planet. Thus far, GV efforts have sampled DSDs in a variety of precipitation systems from Finland to Oklahoma. This dataset consists of over 33 million raindrops sampled by GPM GV's twoâdimensional video disdrometers (2DVD) and includes RSD observations from the LPVEx, MC3E, GCPEx, HyMEx and IFloodS campaigns as well as from GV sites in Huntsville, AL and Wallops Island, VA. This study focuses on the larger end of the raindrop size spectrum, which greatly influences radar reflectivity and has implications for moment estimation. Thus knowledge of the maximum diameter is critical to GPM algorithm development. There are over 24,000 raindrops exceeding 5 mm in diameter contained within this disdrometer dataset. The largest raindrops in the 2DVD dataset (>7â8 mm in diameter) are found within intense convective thunderstorms, and their origins are believed to be hailstones. In stratiform rainfall, large raindrops have also been found to fall from lower and thicker melting layers. The 2DVD dataset will be combined with that collected by dualâpolarimetric radar and aircraft particle imaging probes to "follow" the vertical evolution of the DSD tail (i.e., retrace the large drops from the surface to their origins aloft). |
| File Size | 115094 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20140003204 |
| Archival Resource Key | ark:/13960/t6q006j2k |
| Language | English |
| Publisher Date | 2013-09-16 |
| Access Restriction | Open |
| Subject Keyword | Meteorology And Climatology Earth Resources And Remote Sensing Melting Algorithms Precipitation Measurement Raindrops Satellite Observation Precipitation Particle Measurement Size Determination Drop Size Precipitation Meteorology Ground Truth Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
