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Title:Modeled sensitivity of the northwestern Pacific upper-ocean responses to tropical cyclones in a fully coupled climate model with varying ocean grid resolution
Author(s):Li, Hui
Advisor(s):Sriver, Ryan
Department / Program:Atmospheric Sciences
Discipline:Atmospheric Sciences
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Tropical cyclones
Ocean heat convergence
Earth system modeling
atmosphere-ocean interactions
Abstract:Tropical cyclones (TCs) actively contribute to Earth's climate, but TC-climate interactions are largely unexplored in fully-coupled models. Here we analyze the upper-ocean response to TCs using a high resolution Earth system model, in which a 0.5° atmosphere is coupled to an ocean with two different horizontal resolutions: 1° and 0.1°. The model produces realistic TCs up to category 3 in both versions of the model, and, in the northwestern Pacific region, the transient surface ocean temperature response is consistent with observations. We estimate the model’s flux-adjusted TC-induced ocean heat convergence in the northwestern Pacific is ~0.26 PW and ~0.30 PW for the low and high resolution configurations, respectively, which is within the range of previous observation-based estimates. Results point to the importance of coupled modeling approaches that account for ocean-atmosphere feedbacks, in order to develop a complete understanding of the relationship between TCs and climate.
Issue Date:2015-01-21
Rights Information:Copyright 2014 Hui Li
Date Available in IDEALS:2015-01-21
Date Deposited:2014-12

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