Date of Award

12-1-2022

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 (xv, 156 pages) : illustrations (some color), color maps.

Dissertation/Thesis Chair

Justin Minder

Committee Members

Aiguo Dai, Brian Rose, Robert Fovell

Keywords

Monsoons, Ocean temperature, Climatic changes, Precipitation (Meteorology)

Subject Categories

Atmospheric Sciences

Abstract

The North American Monsoon (NAM) is a major contributor to annual rainfall for large portions of the North American Southwest. Much of the prior work examining the NAM using numerical models has been done at scales exceeding 20-km grid spacing. At these coarse scales, unresolved processes and poorly resolved geographic features can impact model performance. This can present a problem when simulating the NAM particularly with regard to orographic precipitation, precipitation on sub-daily timescales, and land surface-atmosphere interactions. This dissertation seeks to better understand the NAM through examination of several sets of convection-permitting regional climate model output. The primary goal of this dissertation is to improve our understanding of how depictions of the NAM vary across scales and model configuration, and offer additional insight into the processes that can affect NAM rainfall.

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