Modeling the surface heat flux response to long-lived SST anomalies in the North Atlantic

S. B. Power, R. Kleeman, R. A. Colman, B. J. McAvaney

Research output: Contribution to journalArticle

Abstract

An atmospheric general circulation model (AGCM), a simplified atmospheric model (SAM) of surface heat flux, and various idealized analytic models have been used to investigate the atmospheric response over the North Atlantic to SST anomalies, including a general cooling associated with a weakened thermohaline circulation. Latent heating dominates the surface heat flux response, while sensible heating plays an important secondary role. All three kinds of atmospheric models exhibit nonrestorative behavior away from the anomaly peak that is primarily associated with the advection of cooled air eastward. This simple picture is complicated in the AGCM by the fact that the winds weaken over the SST anomaly, which helps to moderate the response. -from Authors

Original languageEnglish (US)
Pages (from-to)2161-2180
Number of pages20
JournalJournal of Climate
Volume8
Issue number9
DOIs
StatePublished - 1995

ASJC Scopus subject areas

  • Atmospheric Science

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