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The U.S. network of 160 weather radars known as NEXRAD (NEXt generation RADar) is one of the largest and most comprehensive terrestrial sensor networks in the world. To date, the National Climatic Data Center (NCDC) has archived about 2 petabytes data from this system. Although designed for meteorological applications, these radars readily detect the movements of birds, bats, and insects. Many of these movements are continental in scope, spanning the entire range of the network. It is unclear whether biological or meteorological data comprise the bulk of the archive. Regardless, the biological portion is sufficiently large that it likely represents one of the largest biological data archives in the world, perhaps...
Categories: Data,
Project;
Types: Downloadable,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
Shapefile;
Tags: 2014,
All Funded Projects,
Best Practices,
Completed,
Data Release,
There are 12 composite NEXRAD images included in this Science Base item, with four images each for hurricanes Katrina, Rita, and Wilma. The four images for each storm are labeled as: StormName_Reflectivity_High, StormName_Reflectivity_Low, StormName_Radial_Velocity_High, and StormName_Radial_Velocity_Low. Reflectivity and radial velocity refer to the moment (type of data) collected by the NEXRAD radars, with reflectivity measuring the overall strength of the radar signal and radial velocity measuring the velocity of the target with respect to the radar. High and Low refer to the operating angle of the NEXRAD radars with high being the closest angle to 3.5 degs and low being the closest angle to 0.5 degs for each...
This Science Base item contains three file geodatabases (Katrina_Radar_Data, Rita_Radar_Data, and Katrina_Radar_Data), a symbology folders with two layer files (Radial_Velocity_scale and Reflectivity_scale, as well there associated shapefiles), and a single metadata document (Composite_NEXRAD_Metadata in three formats: .xml, .txt, and .html) that covers all the data in the three geodatabases. Each geodatabase contains data (if available) compiled from 94 NEXRAD stations in the eastern half of the U.S. collected at approximately 0300 UTC on the day these three hurricanes made landfall: 8/29/2005 - Katrina, 9/24/2005 - Rita, and 10/24/2015 - Wilma. There are four feature classes within each geodatabase: StormName_Reflectivity_High,...
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