Atmospheric manifestation of tropical instability wave observed by QuikSCAT and tropical rain measuring mission

W. Timothy Liu, Xiaosu Xie, Paulo S. Polito, Shang Ping Xie, Hiroshi Hashizume

Research output: Contribution to journalArticlepeer-review

157 Citations (Scopus)

Abstract

Observations from two new spaceborne microwave instruments in 1999 clearly reveal the atmospheric manifestation of tropical instability waves north of the Pacific equatorial cold tongue. A unique zonal-temporal bandpass filter enables the isolation of the propagating signals and the determination of their phase differences. The phase differences between the propagation of wind and sea surface temperature (SST) signals observed from space and the vertical wind profiles measured from a research ship are consistent with the hypothesis that the coupling between wind and SST is caused by buoyancy instability and mixing, which reduces the wind shear in the atmospheric boundary layer. The coupling causes higher evaporative cooling over the warm phase and infers a negative thermal feedback.

Original languageEnglish
Pages (from-to)2545-2548
Number of pages4
JournalGeophysical Research Letters
Volume27
Issue number16
DOIs
Publication statusPublished - 2000 Aug 15

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

Fingerprint

Dive into the research topics of 'Atmospheric manifestation of tropical instability wave observed by QuikSCAT and tropical rain measuring mission'. Together they form a unique fingerprint.

Cite this