In this section
@article{Bao:2017:10.1002/2017GL074611,
author = {Bao, M and Tan, X and Hartmann, DL and Ceppi, P},
doi = {10.1002/2017GL074611},
journal = {Geophysical Research Letters},
pages = {8011--8016},
title = {Classifying the tropospheric precursor patterns of sudden stratospheric warmings},
url = {http://dx.doi.org/10.1002/2017GL074611},
volume = {44},
year = {2017}
}
TY - JOUR
AB - Classifying the tropospheric precursor patterns of sudden stratospheric warmings (SSWs) may provide insight into the different physical mechanisms of SSWs. Based on 37 major SSWs during the 1958–2014 winters in the ERA reanalysis data sets, the selforganizing maps method is used to classify the tropospheric precursor patterns of SSWs. The cluster analysis indicates that one of the precursor patterns appears as a mixed pattern consisting of the negativesigned Western Hemisphere circulation pattern and the positive phase of the PacificNorth America pattern. The mixed pattern exhibits higher statistical significance as a precursor pattern of SSWs than other previously identified precursors such as the subpolar North Pacific low, Atlantic blocking, and the western Pacific pattern. Other clusters confirm northern European blocking and Gulf of Alaska blocking as precursors of SSWs. Linear interference with the climatological planetary waves provides a simple interpretation for the precursors. The relationship between the classified precursor patterns of SSWs and ENSO phases as well as the types of SSWs is discussed.
AU - Bao,M
AU - Tan,X
AU - Hartmann,DL
AU - Ceppi,P
DO - 10.1002/2017GL074611
EP - 8016
PY - 2017///
SN - 0094-8276
SP - 8011
TI - Classifying the tropospheric precursor patterns of sudden stratospheric warmings
T2 - Geophysical Research Letters
UR - http://dx.doi.org/10.1002/2017GL074611
UR - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000408379000051&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR - http://hdl.handle.net/10044/1/74425
VL - 44
ER -