@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix ns0: <https://gcmd.earthdata.nasa.gov/kms#> .

<https://gcmd.earthdata.nasa.gov/kms/concept/824070fa-da29-40fa-ba17-f3d60584bd4d>
  skos:prefLabel "Imaging Radars"@en ;
  a skos:Concept ;
  skos:narrower <https://gcmd.earthdata.nasa.gov/kms/concept/f23f32ff-f770-4046-941f-534014a2fcab> .

<https://gcmd.earthdata.nasa.gov/kms/concept/f23f32ff-f770-4046-941f-534014a2fcab>
  ns0:reference [ ] ;
  ns0:altLabel [ ] ;
  skos:changeNote """2022-03-24 08:43:36.0 [tstevens]  
insert AltLabel (id: null
category: primary
text: Gridded NEXRAD WSR-88D Radar
language code: en); 
insert Definition (id: null
text: As originally part of a National Science Foundation funded project to investigate the effects of deep convection on the stratosphere, the authors merged radar reflectivity data from 125 National Weather Service NEXRAD WSR-88D weather radars to produce hourly, three-dimensional, high-resolution analyses of radar reflectivity that cover most of the contiguous U.S. The gridded radar data, known as GridRad V3.1, covers the period 1995 through 2017.

In 2022, leveraging support from the National Aeronautics and Space Administration and the National Oceanic and Atmospheric Administration, two new archives of GridRad data (built using V4.2 of our algorithm) were released to the public: an hourly archive of GridRad volumes covering the entire contiguous U.S. and including radar reflectivity and velocity spectrum width from 2008-2021, and a 5-min archive of GridRad volumes for ~100 of the most severe weather events each year from 2010-2021. The GridRad-Severe volumes include up to 7 variables: radar reflectivity, velocity spectrum width, azimuthal shear of the radial velocity, radial divergence of the radial velocity, and (for years 2013 and later) differential radar reflectivity, specific differential phase, and copolar correlation coefficient. GridRad-Severe data are expected to be routinely updated each year into the future.
language code: en); 
""", """2022-03-24 08:42:13.0 [tstevens] Insert Concept 
add broader relation (GridRad [f23f32ff-f770-4046-941f-534014a2fcab,865213] - Imaging Radars [824070fa-da29-40fa-ba17-f3d60584bd4d,857058]); 
""" ;
  skos:broader <https://gcmd.earthdata.nasa.gov/kms/concept/824070fa-da29-40fa-ba17-f3d60584bd4d> ;
  skos:prefLabel "GridRad"@en ;
  skos:inScheme <https://gcmd.earthdata.nasa.gov/kms/concepts/concept_scheme/instruments> ;
  skos:definition """As originally part of a National Science Foundation funded project to investigate the effects of deep convection on the stratosphere, the authors merged radar reflectivity data from 125 National Weather Service NEXRAD WSR-88D weather radars to produce hourly, three-dimensional, high-resolution analyses of radar reflectivity that cover most of the contiguous U.S. The gridded radar data, known as GridRad V3.1, covers the period 1995 through 2017.

In 2022, leveraging support from the National Aeronautics and Space Administration and the National Oceanic and Atmospheric Administration, two new archives of GridRad data (built using V4.2 of our algorithm) were released to the public: an hourly archive of GridRad volumes covering the entire contiguous U.S. and including radar reflectivity and velocity spectrum width from 2008-2021, and a 5-min archive of GridRad volumes for ~100 of the most severe weather events each year from 2010-2021. The GridRad-Severe volumes include up to 7 variables: radar reflectivity, velocity spectrum width, azimuthal shear of the radial velocity, radial divergence of the radial velocity, and (for years 2013 and later) differential radar reflectivity, specific differential phase, and copolar correlation coefficient. GridRad-Severe data are expected to be routinely updated each year into the future."""@en ;
  a skos:Concept .