Research Papers

Impacts of the binary typhoons on upper ocean environments in November 2007

[+] Author Affiliations
Yuan-Jian Yang

University of Science and Technology of China, School of Earth and Space Sciences, Laboratory of Atmospheric Observation and Climatological Environment, Hefei, 230026, China

Institute of Atmospheric Physics, Chinese Academy of Sciences, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Beijing 100029, China

Second Institute of Oceanography, State Oceanic Administration, State Key Laboratory of Satellite Ocean Environment Dynamics, Hangzhou, 310012, China

Anhui Institute of Meteorological Sciences, Key Laboratory of Atmospheric Sciences and Satellite Remote Sensing of Anhui Province, Hefei, 230031, China

Liang Sun

University of Science and Technology of China, School of Earth and Space Sciences, Laboratory of Atmospheric Observation and Climatological Environment, Hefei, 230026, China

Institute of Atmospheric Physics, Chinese Academy of Sciences, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Beijing 100029, China

Second Institute of Oceanography, State Oceanic Administration, State Key Laboratory of Satellite Ocean Environment Dynamics, Hangzhou, 310012, China

An-Min Duan, Zi-Qian Wang

Institute of Atmospheric Physics, Chinese Academy of Sciences, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Beijing 100029, China

Yu-Bin Li

Macquarie University, Department of Environment and Geography, Sydney, Australia

Yun-Fei Fu

University of Science and Technology of China, School of Earth and Space Sciences, Laboratory of Atmospheric Observation and Climatological Environment, Hefei, 230026, China

Institute of Atmospheric Physics, Chinese Academy of Sciences, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Beijing 100029, China

Anhui Institute of Meteorological Sciences, Key Laboratory of Atmospheric Sciences and Satellite Remote Sensing of Anhui Province, Hefei, 230031, China

You-Fang Yan

South China Sea Institute of Oceanology, Chinese Academy of Sciences, State Key Laboratory of Tropical Oceanography, Guangzhou 510301, China

Tao Xian

University of Science and Technology of China, School of Earth and Space Sciences, Laboratory of Atmospheric Observation and Climatological Environment, Hefei, 230026, China

J. Appl. Remote Sens. 6(1), 063583 (Oct 04, 2012). doi:10.1117/1.JRS.6.063583
History: Received December 30, 2011; Revised August 22, 2012; Accepted September 13, 2012
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Abstract.  Using multiple satellite observations, Argo floats profiles, and one-dimensional (1-D) ocean mixed layer model, this study systematically investigated the impacts of the binary typhoons Hagibis and Mitag [which coexisted respectively in the South China Sea (SCS) and western North Pacific (WNP) during November, 22 to 26, 2007] on upper ocean environments. It was observed that intense Ekman pumping and two mesoscale cold, cyclonic eddies, which, induced by long forcing time of strong wind stress curls, appeared respectively in two certain areas instead of after the binary typhoons’ trails. Both cyclonic eddies retained for 39 days, accompanied with maximum sea surface height anomaly (SSHA) reduction of 25cm induced by Hagibis and of 44cm induced by Mitag, respectively. The largest sea surface temperature (SST) drop of 7°C and 2°C, the maximum chlorophyll a (Chl-a) enhancement respectively was >20 times and 3 times in these two eddies’ regions induced by Typhoon Hagibis and Mitag, respectively. The results of the 1-D ocean mixed layer model showed that, given its 84 h forcing time, the simulated MLT cooling and mixed layer deepening induced by Hagibis were -2.8°C and 45 m, respectively, -0.5°C and 25 m for Mitag at its 66 h forcing time. This work provides convincing evidences that typhoons, which appear frequently in the SCS and the WNP, play a notable role in the activities of mesoscale eddies in these areas.

Figures in this Article
© 2012 Society of Photo-Optical Instrumentation Engineers

Citation

Yuan-Jian Yang ; Liang Sun ; An-Min Duan ; Yu-Bin Li ; Yun-Fei Fu, et al.
"Impacts of the binary typhoons on upper ocean environments in November 2007", J. Appl. Remote Sens. 6(1), 063583 (Oct 04, 2012). ; http://dx.doi.org/10.1117/1.JRS.6.063583


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