Formation and variation of temperature inversions in the eastern subarctic North Pacific

Hiromichi Ueno, Eitarou Oka, Toshio Suga, Hiroji Onishi, Dean Roemmich

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Hydrographic data from profiling float observations for 2001-2005 and from expendable bathythermograph observations for 1993-2005 were analyzed to study the formation and variation of temperature inversions (T-inversions) in the eastern subarctic North Pacific (SNP). The formation and variation of T-inversions differed significantly between the northern and southern regions of the eastern SNP. In the northern region, the temperature minimum (T-min) at the top of T-inversions outcropped to the sea surface and was cooled in the mixed layer nearly every winter. This process caused a seasonal cycle in the magnitude of T-inversions (ΔT), with a maximum in winter. In the southern region, the winter T-min outcropped relatively infrequently and the ΔT did not exhibit a significant maximum in winter during most years. The T-min in the southern region was likely to outcrop upstream near the date line roughly one year earlier and was then advected to the southern region.

Original languageEnglish
Article numberL05603
JournalGeophysical Research Letters
Volume34
Issue number5
DOIs
Publication statusPublished - 2007 Mar 16

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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