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

研究成果: Article査読

155 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)2545-2548
ページ数4
ジャーナルGeophysical Research Letters
27
16
DOI
出版ステータスPublished - 2000 8 15

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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