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Geosat observations of sea level response to barometric pressure forcingAltimeter and sea level pressure data from the Geosat mission are analyzed for evidence of inverted barometer responses of sea level to atmospheric pressure forcing. Estimates of the inverted barometer coefficient are given for a variety of geographic regions and time scales using various orbit error removal strategies. There is some sensitivity to the orbit error removal method, but the estimated coefficients show a clear latitudinal dependence and are generally between -0.5 cm/mbar and -0.9 cm/mbar. The southern oceans respond slightly more like an inverted barometer than the northern oceans for similar latitudes. The regression exhibits significant geographic variability, particularly near major circulation features and in the northern hemisphere. The results suggest that the inverted barometer approximation is resonable over much of the oceans, but that some sea level variability may be correlated with barometric pressure by means other than the inverted barometer effect.
Document ID
19950046393
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Hoar, Timothy J.
(Univ. of Texas at Austin, Austin, TX United States)
Wilson, Clark R.
(Univ. of Texas at Austin, Austin, TX United States)
Date Acquired
August 16, 2013
Publication Date
November 15, 1994
Publication Information
Publication: Geophysical Research Letters
Volume: 21
Issue: 23
ISSN: 0094-8276
Subject Category
Oceanography
Accession Number
95A77992
Funding Number(s)
CONTRACT_GRANT: NAGW-3131
Distribution Limits
Public
Copyright
Other

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