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(Article of periodic en Anglais - 2011)

Document title

The influence of the PDO on winter precipitation during high- and low-index ENSO conditions in the Eastern United States

Authors(s) and Affiliation(s)

GOODRICH G.B. (1) ; WALKER J.M. (1) ;
(1) Dep. of geography and Geology Western Kentucky, Univ., Bowling Green, ETATS-UNIS

Abstract

The AA. analyzed the influence of the PDO (Pacific Decadal Oscillation) on winter precipitation during years of high- and low-index ENSO conditions for 260 climate divisions in the eastern U.S. from 1925 to 1998. When the 33 neutral ENSO years are split by cold (12 years) and warm (21 years) PDO, the resulting winter precipitation patterns show wetter (drier) than average conditions in nearly all (80%) of the 260 climate divisions during the warm (cold) phase of the PDO. The two ENSO/PDO combinations with the driest signals for the eastern U.S. are La Niña/warm PDO and neutral ENSO/cold PDO. The modulation effect of the PDO is significant during La Niña in northern Texas and parts of New England and during neutral ENSO in southern Texas and the northern Plains. The AA. suggest that seasonal forecasters in these regions may use this knowledge to improve long-lead winter forecasts during those ENSO phases, assuming the current PDO phase is well established

Source

Article of periodic

published at : Physical geography / ISSN 0272-3646

Editor : Taylor & Francis, Abingdon - ROYAUME-UNI (1980)

Millesime : 2011, vol. 32, no4 [pp. 295-312]

Bibliographic references : 38 ref.

Collation : 6 fig., 3 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 20106

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.2747/0272-3646.32.4.295

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2011
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