<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Abatzoglou, John</style></author><author><style face="normal" font="default" size="100%">Magnusdottir, G.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Nonlinear planetary wave reflection in the troposphere</style></title><secondary-title><style face="normal" font="default" size="100%">Geophysical Research Letters</style></secondary-title><alt-title><style face="normal" font="default" size="100%">Geophys. Res. Lett.</style></alt-title></titles><keywords><keyword><style  face="normal" font="default" size="100%">1000</style></keyword><keyword><style  face="normal" font="default" size="100%">breaking</style></keyword><keyword><style  face="normal" font="default" size="100%">Content Type: Biblio</style></keyword><keyword><style  face="normal" font="default" size="100%">Magnusdottir Modeling Lab</style></keyword><keyword><style  face="normal" font="default" size="100%">stationary waves</style></keyword><keyword><style  face="normal" font="default" size="100%">subtropical tropopause</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2004</style></year><pub-dates><date><style  face="normal" font="default" size="100%">May</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">&lt;Go to ISI&gt;://000221324900002</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">9</style></number><volume><style face="normal" font="default" size="100%">31</style></volume><isbn><style face="normal" font="default" size="100%">0094-8276</style></isbn><language><style face="normal" font="default" size="100%">English</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;[1] Forty-four years (1958-2001) of daily data from two re-analysis data sets are used to investigate the occurrence of nonlinear reflection from planetary wave breaking (PWB). PWB is manifested in the large-scale and rapid irreversible overturning of potential vorticity (PV) contours on isentropic surfaces in the upper troposphere. PWB takes place as a midlatitude wave train propagates equatorward toward a region of weak background zonal flow. As breaking occurs wave propagation is no longer possible. Linear theory predicts that wave activity will be absorbed in the wave-breaking region following the event. Our results show that almost a third of all PWB events result in nonlinear reflection rather than absorption. The signature of the reflected wave train arching northward and downstream into midlatitudes is very similar to that of nonlinear reflection seen in a hierarchy of modeling studies.&lt;/p&gt;</style></abstract><work-type><style face="normal" font="default" size="100%">Article</style></work-type><accession-num><style face="normal" font="default" size="100%">ISI:000221324900002</style></accession-num><notes><style face="normal" font="default" size="100%">&lt;p&gt;ISI Document Delivery No.: 819OQTimes Cited: 7Cited Reference Count: 11Cited References:      HAYNES PH, 1989, J FLUID MECH, V207, P231     HELD IM, 2002, J CLIMATE, V15, P2125     KILADIS GN, 1998, J ATMOS SCI, V55, P321     MAGNUSDOTTIR G, 1999, J ATMOS SCI, V56, P652     MCINTYRE ME, 1983, NATURE, V305, P593     PETERS D, 1996, J ATMOS SCI, V53, P3013     PLUMB RA, 1985, J ATMOS SCI, V42, P217     POSTEL GA, 1999, J ATMOS SCI, V56, P359     SCOTT RK, 2002, J ATMOS SCI, V59, P2347     WALKER CC, 2003, J ATMOS SCI, V60, P279     WAUGH DW, 2003, J ATMOS SCI, V60, P637Amer geophysical unionWashington&lt;/p&gt;</style></notes><auth-address><style face="normal" font="default" size="100%">&lt;p&gt;Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA.Abatzoglou, JT, Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92697 USA.gudrun@uci.edu&lt;/p&gt;</style></auth-address></record></records></xml>