Stratospheric Transport Changes Forced By Tropical Sea Surface Temperature Perturbation: Idealized Simulation

dc.contributor.authorYang, Huangen_US
dc.contributor.chairChen, Gangen_US
dc.contributor.committeeMemberHess, Peter George Muelleren_US
dc.contributor.committeeMemberColucci, Stephen Johnen_US
dc.description.abstractThe structure of mass transport in the stratosphere, as well as its dynamic behaviors, is explored by imposing idealized sea surface temperature (SST) perturbations in an aqua-planet model. Mass transport within stratosphere is simultaneously running through two processes: the diabatic circulation, also well known as the Brewer-Dobson Circulation (BDC), advecting air mass across isentropic surfaces, and the quasi-horizontal mixing ventilating air mass along isentropic surfaces. It is shown that, with an equatorial SST heating, the stratospheric transport will increase in strength, in a circumstance with both BDC and high-latitude isentropic mixing being accelerated. Behaviors of transport, for both BDC and isentropic mixing, turn out to be with more complexities when the imposed SST perturbation being relocated at different ranges of latitudes or expanding itself with larger longitudinal span. Dynamic diagnostics further relate the changes of stratospheric transport mainly to the changes of eddies, which are originated from the induction of SST perturbation.en_US
dc.identifier.otherbibid: 8267217
dc.subjectTropical Seaen_US
dc.titleStratospheric Transport Changes Forced By Tropical Sea Surface Temperature Perturbation: Idealized Simulationen_US
dc.typedissertation or thesisen_US Science Universityen_US of Science, Atmospheric Science


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