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linear simulation of the stationary eddies in a gcm. ii - the 'mountain' modelLinear stationary wave theory is used to account for zonal asymmetries of the winter-averaged tropospheric circulation obtained in a GCM. The eddy zonal velocity field in the upper troposphere indicates that the orographic and thermal plus transient contributions are nearly equal in amplitude, while the eddy meridional velocity field (which is dominated by shorter zonal scales) shows the orographic contribution to be dominant. The two contributions are found to be roughly in phase over the east Asian coast, and they contribute roughly equal amounts to the low level Siberian high. Results indicate that the 300 mb extratropical response to tropical forcing reaches 50 gpm over Alaska, and that the responses to sensible heating and lower tropospheric transients are strongly anticorrelated.
Document ID
19880056308
Document Type
Reprint (Version printed in journal)
Authors
Nigam, Sumant
(MIT Cambridge, MA, United States)
Held, Isaac M.
(Massachusetts Inst. of Tech. Cambridge, MA, United States)
Lyons, Steven W.
(NOAA, Geophysical Fluid and Dynamics Laboratory, Princeton NJ, United States)
Date Acquired
August 13, 2013
Publication Date
May 1, 1988
Publication Information
Publication: Journal of the Atmospheric Sciences
Volume: 45
ISSN: 0022-4928
Subject Category
METEOROLOGY AND CLIMATOLOGY
Funding Number(s)
CONTRACT_GRANT: NSF ATM-85-20354
CONTRACT_GRANT: NSF ATM-83-42482
CONTRACT_GRANT: NAGW-525
Distribution Limits
Public
Copyright
Other