NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Estimation of errors in the TOMS total ozone measurement during the Antarctica ozone campaign of August/September 1987The Total Ozone Mapping Spectrometer (TOMS) instrument on the Nimbus-7 satellite provides the primary source of total ozone data for the study of total ozone in the polar regions of the earth. There are two types of instrument related errors: a slowly developing drift in the instrument calibration since the launch of the instrument in October 1978 and an increase in the measurement noise beginning April, 1984. It is estimated that by October 1987, the accumulated error in the TOMS total ozone measurement due to instrument drift is about 6 m-atm-cm. The sign of the error is such that the TOMS is slightly overpredicting the long-term decrease of the Antarctica ozone. The increase in the measurement noise is more difficult to quantify, affecting some measurements by as much as 10 D.U. and others not at all. A detailed analysis of this error and its potential impact on the studies of total ozone from TOMS will be provided. There are three categories of algorithmic errors: (1) error due the unusual shape of the ozone profile in the ozone hole; (2) error caused by very low atmospheric temperatures in the ozone hole affecting the ozone absorption cross-sections at the TOMS wavelengths; and (3) errors resulting from occasionally thick stratospheric clouds that sometimes reach to 20 km in the ozone hole.
Document ID
19890005139
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Bhartia, P. K. (Science Applications, Inc., Greenbelt MD., United States)
Krueger, Arlin J. (NASA Goddard Space Flight Center Greenbelt, MD., United States)
Taylor, S. (ST Systems Corp. Lanham, MD., United States)
Wellemeyer, C. (ST Systems Corp. Lanham, Md., United States)
Date Acquired
September 5, 2013
Publication Date
May 1, 1988
Publication Information
Publication: Polar Ozone Workshop. Abstracts
Subject Category
Environment Pollution
Accession Number
89N14510
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available