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Eurasian snow cover variability and northern hemisphere climate predictability
Author(s) -
Cohen Judah,
Entekhabi Dara
Publication year - 1999
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 - 10.1029/1998gl900321
Subject(s) - northern hemisphere , climatology , predictability , expansive , snow , snowpack , snow cover , environmental science , atmospheric circulation , forcing (mathematics) , atmospheric sciences , geology , physics , quantum mechanics , compressive strength , materials science , geomorphology , composite material
We present observational evidence demonstrating dynamic interactions and feedbacks between multi‐seasonal snow cover and winter‐time circulation anomalies over mid‐high latitudes. The cooling effect of snow cover is associated with a strengthened and more expansive Siberian high with more frequent, topographically constrained intrusions west and north. Early‐season snow cover variability leads to altered general circulation patterns consistent with the dominant mode of winter variability observed in the Northern Hemisphere troposphere. The implications of the surface‐atmosphere coupling for seasonal to interannual predictability are also discussed.