Mots-clés
Circulation atmosphérique ; ENSO ; Etats-Unis ; Etats-Unis de l'Ouest ; Hiver ; Interaction océan-atmosphère ; Oscillation climatique ; Précipitation ; Type de temps ; Téléconnexion ; Variabilité climatiqueAtmospheric circulation ; Climate oscillation ; Climatic variability ; ENSO ; Ocean atmosphere interaction ; Precipitation ; Teleconnection ; United States of America ; Weather type ; Western United States ; WinterCirculación atmosférica ; Estados Unidos ; Estados Unidos del Oeste ; Interaccíon océano-atmósfera ; Invierno ; Oscilación climatíca ; Precipitación ; Teleconexión ; Tipo de tiempo ; Variabilidad climáticaCharacterizing the north pacific jet stream for understanding historical variability in western United States winter precipitation
Auteur(s) et Affiliation(s)
ELLIS, A.W.
Dep. of Geography, Virginia Tech, Blacksburg, Etats-Unis
BARTON, N.P.
Program for Climate Model Diagnosis and Intercomparison, Lawrence National Lab., California, Livermore, Etats-Unis
Description :
The AA. examined historical winter-season relationships among precipitation across the western United States, the northern Pacific jet stream (NPJ) across the northern Pacific Ocean basin, and the El Niño-Southern Oscillation (ENSO) phenomenon to determine if the NPJ significantly adds to the existing ENSO-based understanding of inter-annual variability in precipitation. The results indicate that the NPJ is significantly related to winter precipitation across a much larger area of the western United States than the ENSO signal. For areas where the ENSO signal is significantly related to precipitation, there generally exists a stronger or more consistent NPJ-precipitation relationship. The results indicate that there is value in considering seasonal jet stream characteristics as independent variables, along with climate teleconnections, when considering seasonal precipitation variability in regions where large-scale jet stream dynamics are influential.
Type de document :
Article de périodique
Source :
Physical geography, issn : 0272-3646, 2012, vol. 33, n°. 2, p. 105-128, nombre de pages : 24, Références bibliographiques : 31 ref.
Date :
2012
Editeur :
Pays édition : Royaume-Uni, Abingdon, Taylor and Francis
Langue :
Anglais
Anglais
Droits :
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)
Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI)