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Total ozone trends deduced from Nimbus 7 TOMS dataThe Total Ozone Mapping Spectrometer (TOMS) on the Nimbus 7 satellite has been measuring the total column amount of ozone over the globe for more than 11 years. Recent improvements in the data analysis have led to a technique for determining and removing drift in the calibration such that the data at the end of the record are precise to + or - 1.3 percent (2-sigma) relative to the data at the beginning of the record. A statistical model, including terms for seasonal variation, linear trend, quasi-biennial oscillation, solar cycle and second-order autoregressive noise has been fit to the TOMS time series of total ozone data. The linear trend obtained when this statistical model is fit to the TOMS data averaged between 65 N and 65 S latitudes is -0.26 + or - 0.14 percent/year or -3 percent over the 11.6 year time period from November 1978 to May 1990. The trend is near zero (0.0002 + or - 0.2 percent/year) at the equator and increases toward both poles.
Document ID
19910055810
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Stolarski, Richard S.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Mcpeters, Richard D.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Herman, Jay R.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Bloomfield, Peter
(North Carolina State University Raleigh, United States)
Date Acquired
August 15, 2013
Publication Date
June 1, 1991
Publication Information
Publication: Geophysical Research Letters
Volume: 18
ISSN: 0094-8276
Subject Category
Geophysics
Accession Number
91A40433
Distribution Limits
Public
Copyright
Other

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