A simple model of the atmospheric response to ENSO sea surface temperature anomalies

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Abstract

A low-order tropical atmospheric model is developed that gives a reasonable account of the tropical precipitation and circulation anomalies observed during various El Nino and La Nina events. The dynamical part of the model is a linearization about a state of rest with the usual tropical vertical mode retained. The heating is obtained from latent and nonlatent sources with the former obtained from perturbing a steady-state moisture equation about climatology and confining the heating to high SST regions. A thorough sensitivity analysis is undertaken and the model tendency to place major anomalies on the western and northern side of SST anomalies is examined. -Author

Original languageEnglish (US)
Pages (from-to)3-18
Number of pages16
JournalJournal of the Atmospheric Sciences
Volume48
Issue number1
StatePublished - Jan 1 1991

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ASJC Scopus subject areas

  • Atmospheric Science

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