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Introducing sub‐seasonal spatial and temporal resolution to winter climate prediction
Author(s) -
Cohen Judah
Publication year - 2003
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 - 10.1029/2002gl016066
Subject(s) - anomaly (physics) , climatology , latitude , northern hemisphere , spatial ecology , mode (computer interface) , geology , southern hemisphere , common spatial pattern , temporal resolution , environmental science , geodesy , ecology , physics , condensed matter physics , quantum mechanics , computer science , biology , operating system
The dominant Northern Hemisphere winter mode of variability is characterized by a same‐signed sea level pressure anomaly at high latitudes with an opposite‐signed anomaly stretching across mid‐latitudes. The surface temperature pattern associated with this mode is a same‐signed temperature anomaly across the major continents and an opposite‐signed anomaly across the major oceans. We demonstrate that this temperature pattern is mostly an artifact of multi‐year averaging, which results in the super positioning of two distinctive patterns. Separation of the two patterns allows for more accurate seasonal predictions and introduces a spatial and temporal resolution in forecasts previously not possible.