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GRLevel2 is a Windows viewer for live and archived NEXRAD Level II data (volumetric reflectivity and velocity data [2]). Base reflectivity, base velocity, storm relative velocity, and spectrum width sweeps for all radar tilts can be ingested. The display has high speed zooming and panning to allow the user a quickly focus on the area of interest.
NEXRAD or Nexrad (Next-Generation Radar) is a network of 159 high-resolution S-band Doppler weather radars operated by the National Weather Service (NWS), an agency of the National Oceanic and Atmospheric Administration (NOAA) within the United States Department of Commerce, the Federal Aviation Administration (FAA) within the Department of Transportation, and the U.S. Air Force within the ...
In the composite reflectivity product, the highest intensities among those available on the different angles above each point in the image will be displayed. It is a radar product created to compare low-level reflectivity with total reflectivity in the air column in order to identify certain cloud characteristics or artifacts in radar data. [1]
The scale of dBZ values can be seen along the bottom of the image. dBZ is a logarithmic dimensionless technical unit used in radar. It is mostly used in weather radar, to compare the equivalent reflectivity factor (Z) of a remote object (in mm 6 per m 3) to the return of a droplet of rain with a diameter of 1 mm (1 mm 6 per m 3). [1]
However, this finer resolution is only available up to 135 kilometres (84 mi) from the radar; beyond that, the resolution is close to that of the NEXRAD. However, since August 2008, oversampling on NEXRAD has increased its resolution in lower elevations in reflectivity data to 0.25 km (0.16 mi) by 0.5 degree, and increased the range of Doppler ...
The formation of descending reflectivity cores in supercell thunderstorms is a complex process influenced by various atmospheric dynamics. Research, particularly involving high-resolution radar data and numerical simulations, has identified several mechanisms through which DRCs can develop:
WRF model output showing simulated radar reflectivity (dBZ) for Typhoon Mawar at 3.3-km (2.1-mi) grid spacing. Time period is from 0000 UTC 22 August 2005 to 0000 UTC 24 August 2005. Time period is from 0000 UTC 22 August 2005 to 0000 UTC 24 August 2005.
Dual-polarized WSR-88D radar image of the 2021 Naperville–Woodridge tornado, showing four products used to detect active tornadoes: high reflectivity returns in dBZ and low correlation coefficient returns, when paired with low differential reflectivity returns, indicate a tornado debris signature, and the strong opposing velocity values form ...
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