Precursors of copepod abundance in the Gulf of Maine in atmospheric centers of action and sea surface temperature

Sergey Piontkovski, Sultan Hameed

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

Interannual variations of total copepod abundance in the Gulf of Maine (1961-1991) are analyzed and related to the semi-permanent atmospheric pressure systems: Icelandic Low (IL) and the Azores High (AH). These centers of action dominate atmospheric and oceanic circulation in the North Atlantic. Cross-correlation analysis of zooplankton, sea surface temperature (SST) and the atmospheric characteristics have revealed different (from one to three years) time lags between the above characteristics. A multiple stepwise regression analysis gave a correlation value of 0.7 between observed and predicted interannual changes of total copepod abundance. A discussion is included of possible mechanisms that may contribute to the dynamic links that transfer atmospheric variation into observed changes in zooplankton abundance.

Original languageEnglish
Pages (from-to)283-291
Number of pages9
JournalGlobal Atmosphere and Ocean System
Volume8
Issue number4
DOIs
Publication statusPublished - Nov 2002

Keywords

  • Atmospheric centers of action
  • Climate change
  • Gulf of Maine
  • Interannual variability
  • North Atlantic
  • Sea level pressure
  • Zooplankton

ASJC Scopus subject areas

  • Oceanography
  • Global and Planetary Change

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