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Infrared and Reflected Solar Radiation Measurements from the TIROS 2 Meteorological SatelliteTIROS II contains instrumentation for measuring infrared and reflected solar radiation from the earth and its atmosphere. A medium resolution scanning radiometer and a low resolution non-scanning radiometer are employed. The satellite's spin provides the scan line of the medium resolution radiometer which is then advanced by the orbital motion. The spatial resolution is about 40 miles square when the earth directly beneath the satellite is viewed. The five channels employ bolometer detectors and filters to limit the spectral responses to five bands: 6 to 6.5 microns, 8 to 12 microns, 0.2 to 6 microns, 8 to 30 microns, and 0.55 to 0.75 microns. These five bands study, respectively: radiation in the water vapor absorption band; day and nighttime cloud cover; albedo; thermal radiation; and visual maps for comparison with satellite vidicon pictures. The low resolution non-scanning radiometer measures the earth's black-body temperature and albedo. Its field when viewing directly below is a circle of 450 miles diameter, covering part of each frame from the wide-field television camera. This radiometer consists of two thermistors, each in the apex of a reflective cone which provides optical gain. One thermistor is black and responds to both thermal and reflected solar radiation. The second responds to thermal but reflects solar radiation. The design, calibration, performance, and data reduction for both systems are discussed herein.
Document ID
19980230643
Acquisition Source
Headquarters
Document Type
Other - NASA Technical Note (TN)
Authors
Bandeen, W. R. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Hanel, R. A. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Licht, John (NASA Goddard Space Flight Center Greenbelt, MD United States)
Stampfl, R. A. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Stroud, W. G. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Date Acquired
September 6, 2013
Publication Date
November 1, 1961
Subject Category
Solar Physics
Report/Patent Number
NASA-TN-D-1096
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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