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Title: Calibration and postlaunch performance of the Meteor 3/TOMS instrument

Prelaunch and postlaunch calibration results for the Meteor 3/total ozone mapping spectrometer (TOMS) instrument are presented here. Ozone amounts are retrieved from measurements of Earth albedo in the 312- to 380-nm range. The accuracy of albedo measurements is primarily tied to knowledge of the reflective properties of diffusers used in the calibrations and to the instrument`s wavelength selection. These and other important prelaunch calibrations are presented. Their estimated accuracies are within the bounds necessary to determine column ozone to better than 1%. However, postlaunch validation results indicate some prelaunch calibration uncertainties may be larger than originally estimated. Instrument calibrations have been maintained postlaunch to within a corresponding 1% error in retrieved ozone. Onboard calibrations, including wavelength monitoring and a three-diffuser solar measurement system, are described and specific results are presented. Other issues, such as the effects of orbital precession on calibration and recent chopper wheel malfunctions, are also discussed.
Authors:
; ; ; ; ; ;  [1]
  1. Hughes STX Corp., Greenbelt, MD (United States)|[NASA, Goddard Space Flight Center, Greenbelt, MD (United States)|[Orbital Sciences Corp., Pomona, CA (United States)
Publication Date:
OSTI Identifier:
57393
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Geophysical Research; Journal Volume: 100; Journal Issue: D2; Other Information: PBD: Feb 1995
Research Org:
National Aeronautics and Space Administration, Greenbelt, MD (United States). Goddard Space Flight Center
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; STRATOSPHERE; ADVECTION; OZONE; ANNUAL VARIATIONS; MAPPING