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Record Details

Record 96 of 5460
The influence of the tropics on the prediction of ultralong waves. I - Tropical wind field
External Online Source: doi:10.1175/1520-0493(1983)111<1341:TIOTTO>2.0.CO;2
Author and Affiliation:
Baker, W. E.(NASA Goddard Space Flight Center, Laboratory for Atmospheric Sciences, Greenbelt, MD, United States)
Paegle, J.(Utah, University, Salt Lake City, UT, United States)
Abstract: The effects of tropical wind data from the FGGE and tropical latent heating on numerical modeling of ultralong waves are considered in a two-part study. The model studied is the global fourth-order GLAS general circulation model, an energy-conserving format with horizontal differences calculated with fourth-order accuracy. Data assimilation experiments were performed with and without the wind data, with account taken of eastward and northward wind components, the geopotential height, and the relative humidity, all over pressure surfaces. The initial conditions were used to generate six pairs of forecasts, and the tropical wind error decreased after two days of prediction when the initial conditions contained the wind data. The deviations from the measured planetary wave data were attributed to differences in the initial rotational wind field, which varied on a three-day basis. The latent heat initial data had a five-day period and extended its influence beyond the tropical zone. The tropical heat sources sustained the tropical westerlies in the GLAS model, and removal of the tropical heat sources reversed the wind to easterlies.
Publication Date: Jul 01, 1983
Document ID:
19830066187
(Acquired Nov 30, 1995)
Accession Number: 83A47405
Subject Category: METEOROLOGY AND CLIMATOLOGY
Document Type: Journal Article
Publication Information: Monthly Weather Review (ISSN 0027-0644); 111; July 198
Publisher Information: United States
Contract/Grant/Task Num: NAG5-127
Financial Sponsor: NASA; United States
Organization Source: NASA Goddard Space Flight Center; Greenbelt, MD, United States
Utah Univ.; Salt Lake City, UT, United States
Description: 31p; In English
Distribution Limits: Unclassified; Publicly available; Unlimited
Rights: Copyright
NASA Terms: GEOPOTENTIAL HEIGHT; GLOBAL ATMOSPHERIC RESEARCH PROGRAM; NUMERICAL WEATHER FORECASTING; PLANETARY WAVES; TROPICAL METEOROLOGY; WIND PROFILES; ATMOSPHERIC HEATING; ATMOSPHERIC MODELS; ERROR ANALYSIS; LATENT HEAT; SYNOPTIC METEOROLOGY; WIND VELOCITY
Imprint And Other Notes: Monthly Weather Review (ISSN 0027-0644), vol. 111, July 1983, p. 1341-1371.
Miscellaneous Notes: p. 1341-1371
Availability Source: Other Sources
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