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Nimbus-7 Stratospheric and Mesospheric Sounder (SAMS) experiment data user's guideThe Stratospheric and Mesospheric Sounder (SAMS) aboard Nimbus-7 observes infrared radiation from the atmospheric limb. Global upper atmosphere temperature profiles and vertical concentrations of H2O, NO, N2O, CH4 and CO2 are derived from these measurements. The status of all channels was carefully monitored. Temperature and composition were retrieved from the measurements by linearizing the direct equation about an a priori profile and using an optimum statistical estimator to find the most likely solution. The derived temperature and composition profiles are archived on two tape products whose file structure and record formats are described in detail. The gridded retrieved temperature tape (GRID-T) contains daily day and night average temperatures at 62 pressure levels in a 2.5 degree latitude by 10 degree longitude grid extending from 67.5 degrees N to 50 degrees S. The zonal mean methane and nitrous oxide composition tape (ZMT-G) contains zonal mean day and night average CH4 and N2O mixing ratios at 31 pressure levels for 2.5 degrees latitude zones extending from 67.5 degrees N to 50 degrees S.
Document ID
19890016933
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Reference Publication (RP)
Authors
Taylor, F. W. (Oxford Univ. (England). Lanham, MD., United States)
Rodgers, C. D. (Oxford Univ. (England). Lanham, MD., United States)
Nutter, S. T. (ST Systems Corp.)
Oslik, N. (ST Systems Corp.)
Date Acquired
September 6, 2013
Publication Date
May 1, 1989
Subject Category
Geophysics
Report/Patent Number
NAS 1.61:1221
NASA-RP-1221
REPT-89B00074
Accession Number
89N26304
Funding Number(s)
CONTRACT_GRANT: NAS5-28063
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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