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Impacts of winter‐NAO on March cooling trends over subtropical Eurasia continent in the recent half century
Author(s) -
Yu Rucong,
Zhou Tianjun
Publication year - 2004
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2004gl019814
Subject(s) - subtropics , climatology , north atlantic oscillation , tropopause , geology , subtropical ridge , environmental science , geography , precipitation , troposphere , meteorology , fishery , biology
At odds with global warming trends, surface air temperature over large subtropical Eurasia continent in spring March exhibits unique strong cooling over the last half century. The cause for this cooling is shown to be related to Winter (DJF) North Atlantic Oscillation (W‐NAO). Positive values of W‐NAO provoke cooling signals in northern Africa continent simultaneously from surface to tropopause. The W‐NAO generated signals barotropically extend eastward over most of subtropical Eurasia and reaches eastern China in March.