Concept information
Preferred term
HIRS
Definition
- The High Resolution Infrared Radiation Sounder (HIRS) is an atmospheric sounding instrument that has provided important information on atmospheric temperatures in cloud-free conditions since 1978. The latest version, HIRS/3, will be flown on NOAA-K, -L, -M in the years from 1998. A similar instrument, HIRS/4, will be flown on EUMETSAT's Metop-1, -2, -3 from 2005. They will provide high resolution temperature soundings of the global atmosphere in cloud-free conditions of great importance to meteorology and climatology. The instruments will be provided by NOAA, assuring data homogeneity from the two series of operational polar spacecraft. The 20-channel HIRS/3 instrument has an effective ground Field of View (FOV) of about 20 km, while in HIRS/4 the effective FOV will be reduced to about 10 km in order to improve the ability of the instrument to view cloud-free scenes. Additional information available at "http://www.eumetsat.de/en/index.html?area=left2.html&body=/en/area2/ cgms/ap10-09.htm&a=284&b=2&c=280&d=200&e=0" (en)
Broader concept
- Profilers/Sounders (en)
URI
https://gcmd.earthdata.nasa.gov/kms/concept/ee79f1d4-3a73-408f-beea-945b869b3abf
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