Date of Award

1-1-2022

Language

English

Document Type

Dissertation

Degree Name

Doctor of Philosophy (PhD)

College/School/Department

Department of Atmospheric and Environmental Sciences

Content Description

1 online resource (xiii, 110 pages) : illustrations (some color)

Dissertation/Thesis Chair

Brian E.J. Rose

Committee Members

Andrea L. Lang, Aiguo Dai, Oliver E. Timm

Keywords

Atmospheric temperature, Earth temperature, Climatic changes, Global warming

Subject Categories

Atmospheric Sciences | Climate

Abstract

The flux of moist static energy (MSE) into the polar regions plays a key role in the energy budget and climate of the polar regions. While usually studied from a vertically integrated perspective (Fwall), this dissertation examines its vertical structure, using the NASA-MERRA-2 reanalysis to compute climatological and anomalous fluxes of sensible, latent, and potential energy across 70◦N and 65◦S. This dissertation applies an energy budget analysis to winter-season synoptic periods of increased tropospheric (Ftrop) and stratospheric (Fstrat) energy flux convergence events and examines the processes that drive Arctic anoma lous surface warming and sea ice loss during Ftrop events. This dissertation also quantifies the partial contribution to Arctic winter surface warming from changes in the MSE flux convergence and its coupling to the surface in the RCP8.5 warming scenario of the CESM Large Ensemble (CESM-LE).

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