Tropical cyclone footprint in the ocean mixed layer observed by Argo in the Northwest Pacific
Loading...
Authors
Fu, HongLi
Wang, Xidong
Chu, Peter C.
Zhang, Xuefeng
Han, Guijun
Li, Wei
Subjects
Advisors
Date of Issue
2014
Date
Publisher
Language
Abstract
This study systematically investigated the ocean mixed layer responses to tropical cyclone (TC)
using available Argo profiles during the period of 1998–2011 in the northwest Pacific. Results reveal that isothermal
layer (IL) deepening and isothermal layer (IL) cooling with evident rightward biases induced by
strong TCs are clearer compared to the weak TCs. Likewise, the rightward biases of IL deepening and cooling
induced by fast TCs are more obvious than that induced by slow TCs. The upwelling within TC’s eye is
much stronger for the strong (slow) TCs than weak (fast) TCs. For the strong and slow TCs, the TC-induced
rainfall reduces deepening of constant density layer (with its depth called the mixed layer depth, MLD), and
in turn increases the barrier layer thickness (BLT). The initial BL prior to TC can restrict IL cooling more markedly
under the weak and fast TCs than under the strong and slow TCs. The inertial oscillation is stronger
induced by the strong (fast) TCs than by the weak (slow) TCs. In addition, the most pronounced TC-induced
mixed layer deepening and IL cooling in July to October climatology occur in the subtropical gyre of the
northwest Pacific with enhanced vertical diffusivity. The maximum increase of isothermal layer depth (ILD)
and MLD is up to 5 m, with IL cooling up to 0.4 C.
Type
Article
Description
The article of record as published may be located at http://dx.doi.org/10.1002/2014JC010316
Series/Report No
Department
Oceanography
Organization
Identifiers
NPS Report Number
Sponsors
This study was supported by the National Basic Research Program of China (2013CB430304), National Natural Science Foundation (41030854, 41106005, 41176003, 41206178, and 41376015) of China, and National High- Tech R&D Program (2013AA09A505) of China. Peter C. Chu was supported by the Office of Naval Research and Naval Oceanographic Office.
Funder
Format
Citation
Fu, H.L., X. Wang, P. C. Chu, X. Zhang,
G. Han, and W. Li (2014), Tropical
cyclone footprint in the ocean mixed
layer observed by Argo in the
Northwest Pacific, J. Geophys. Res.
Oceans, 119, 8078–8092, doi:10.1002/
2014JC010316.
Distribution Statement
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.