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Instrument: HIRS/2 : High Resolution Infrared Radiation Sounder/2
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Spectral/Frequency Information
Wavelength Keyword: Infrared > Thermal
Number Channels: 19
Spectral/Frequency Coverage/Range: 4 - 15 micrometers

Related Data Sets
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Description
HIRS/1, flown on NIMBUS-6, was an improved version of the 7
channel ITPR (Infrared Temperature Profile Radiometer) on NIMBUS-
5. HIRS/2, an adaptation in turn of HIRS/1, measures radiation
in 20 channels - one visible and nineteen infrared, from short
wavelength (4.3 micron) to long (15 micron). The instrument is
intended to obtain vertical temperature profiles, surface
temperature, water vapor profiles and cloud coverage. HIRS/2 is
part of the TOVS package (see the sensor reference for TIROS OPER
VERTICAL SOUNDER).

HIRS/2 channels:
WAVELENGTH
CHANNELS (microns) PRIMARY USE*
-------- ---------- -----------
1-5 14.95-13.97 Temperature profiles, clouds
6-7 13.64-13.35 Carbon dioxide and water vapor
8 11.11 Surface temperature, clouds
9 9.71 Total ozone concentration
10-12 8.16-6.72 Humidity profiles,
detection of thin cirrus clouds
13-17 4.57-4.24 Temperature profiles
18-20 4.00-0.69 Clouds, surface temperatures
under partly cloudy skies
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* See HIRS/1 for expanded descriptions in corresponding
wavelengths.
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Entry taken from:
Rao,P.K., S.J. Holmes, R.K. Anderson, J.S. Winston, P.E. Lehr,
Weather Satellites: Systems, Data, and Environmental
Applications, American Meteorological Society, Boston, 1990.
ISBN 0-933876-66-1
Cornillon, P. A Guide to Environmental Satellite Data, University of
Rhode Island Marine Technical Report 79, 1982.

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