The Role of the Tropically Excited Arctic Warming Mechanism on the Warm Arctic Cold Continent Surface Air Temperature Trend Pattern

Joseph P. Clark, Sukyoung Lee

Research output: Contribution to journalArticle

Abstract

The December–February surface air temperature (SAT) trend is examined for all consecutive 20-year time periods between 1979 and 2017, from which a transition from a cold-Arctic-warm-continent toward a warm-Arctic-cold-continent trend pattern is evident. This transition is accompanied by a consistent transition in the sea level pressure trend pattern that supports warm air advection over the Arctic and cold air advection over the continents. The regression of the detrended December–February-average SAT onto a detrended index defined to quantify the east-west gradient of tropical Pacific sea surface temperature is characterized by a warm-Arctic-cold-continent pattern much like the SAT trend pattern observed in recent decades. A decadal timescale warming of the western tropical Pacific water has increased the east-west gradient of tropical Pacific sea surface temperature, thus contributing to the observed extratropical SAT trend transition.

Original languageEnglish (US)
Pages (from-to)8490-8499
Number of pages10
JournalGeophysical Research Letters
Volume46
Issue number14
DOIs
StatePublished - Jan 1 2019

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continents
surface temperature
air temperature
warming
trends
heating
air
sea surface temperature
advection
temperature
cold air
sea level pressure
gradients
sea level
continent
trend
cold
regression analysis
timescale
water

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

Cite this

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The Role of the Tropically Excited Arctic Warming Mechanism on the Warm Arctic Cold Continent Surface Air Temperature Trend Pattern. / Clark, Joseph P.; Lee, Sukyoung.

In: Geophysical Research Letters, Vol. 46, No. 14, 01.01.2019, p. 8490-8499.

Research output: Contribution to journalArticle

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