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Global seasonal temperature and precipitation anomalies during El Niño autumn and winter
Author(s) -
Larkin Narasimhan K.,
Harrison D. E.
Publication year - 2005
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 - 10.1029/2005gl022860
Subject(s) - climatology , precipitation , boreal , environmental science , anomaly (physics) , el niño southern oscillation , atmospheric sciences , winter season , meteorology , geography , geology , physics , archaeology , condensed matter physics
One of the consequences of the new NOAA definition of El Niño is the identification of a number of boreal autumns and winters as El Niño seasons that are not conventionally so identified. In these periods SST anomalies are concentrated significantly more toward the International Dateline than usual. We show here that the seasonal weather anomalies typically associated with these additional “Dateline El Niño” seasons are different in useful respects over much of the world, and suggest that it is useful to treat these as different types of “El Niño” for purposes of seasonal weather forecasting.