Analysis of the interannual heat flux response in an atmospheric general circulation model in the tropical Pacific

Richard Kleeman, B. J. McAvaney, R. C. Balgovind

Research output: Contribution to journalArticle

Abstract

A 10-year run of the Bureau of Meteorology Research Centre atmospheric General Circulation Model is analyzed in the tropical Pacific to determine its heat flux response to El Nino/Southern Oscillation sea surface temperature anomalies. It is determined that the expected negative feedback occurs with approximately the right magnitude. Such a feedback occurs primarily as a result of changes in the latent heat flux. In addition to this local feedback in the eastern Pacific a response of the opposite sign occurs in the Indonesian region. Again this is caused mainly by evaporation changes. These changes are caused by changes in the scalar wind speed not associated with circulation changes implying that changes in the variance of the wind are important. Radiative changes were found to be, in general, less important and are associated with changes in low- level clouds. -Authors

Original languageEnglish (US)
Pages (from-to)5539-5550
Number of pages12
JournalJournal of Geophysical Research: Space Physics
Volume99
Issue numberD3
DOIs
StatePublished - 1994

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atmospheric general circulation model
latent heat flux
meteorology
temperature anomaly
El Nino-Southern Oscillation
heat flux
sea surface temperature
evaporation
wind velocity
analysis
research centre

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Environmental Science(all)

Cite this

Analysis of the interannual heat flux response in an atmospheric general circulation model in the tropical Pacific. / Kleeman, Richard; McAvaney, B. J.; Balgovind, R. C.

In: Journal of Geophysical Research: Space Physics, Vol. 99, No. D3, 1994, p. 5539-5550.

Research output: Contribution to journalArticle

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