Japan Geoscience Union Meeting 2015

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Oral

Symbol A (Atmospheric and Hydrospheric Sciences) » A-CG Complex & General

[A-CG32] Multi-scale ocean-atmosphere interaction in the tropics

Tue. May 26, 2015 2:15 PM - 4:00 PM 202 (2F)

Convener:*Hiroki Tokinaga(Disaster Prevention Research Institute/Hakubi Center, Kyoto Univesity), Takuya Hasegawa(Japan Agency for Marine-Earth Science and Technology), Ayako Seiki(Japan Agency for Marine-Earth Science and Technology), Tomoki Tozuka(Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo), Motoki Nagura(Japan Agency for Marine-Earth Science and Technology), Masamichi Ohba(Central Research Institute of Electric Power Industry (CRIEPI), Environmental Science Research Laboratory), Yukiko Imada(Atmosphere and Ocean Research Institute, the University of Tokyo), Chair:Hiroki Tokinaga(Disaster Prevention Research Institute/Hakubi Center, Kyoto Univesity), Masamichi Ohba(Central Research Institute of Electric Power Industry (CRIEPI), Environmental Science Research Laboratory)

2:40 PM - 2:55 PM

[ACG32-02] Cold surge and sea surface temperature cooling over the north part of the Pacific warm pool

*Takuya HASEGAWA1, Shin-ya OGINO1, Qoosaku MOTEKI1, Miki HATTORI1, Hisayuki KUBOTA1, Tomoshige INOUE1 (1.JAMSTEC)

Keywords:Pacific warm pool, Cold surge, sea surface temperature cooling, air-sea interaction

In this study, cold surge over Philippine Sea is investigated using 10-years satellite, and re-analysis data. It is shown that anomalous cold sea surface air temperature from Asia reaches near 15N in the Philippine Sea. This cold event accompanies north-easterly surface wind centered high sea level pressure south of Japan. At that time, sea surface temperature shows also cooling tendency in this region. In previous studies pointed out that cold surge occurs in the South China Sea. In this study, similar cold surge also appear in the Philippine Sea. It is also shown that cold surge in Philippine Sea appears two days after cold surge in the South China Sea, which is related to eastward propagation of high sea level pressure. The present results newly show that the cold surge in Philippine Sea is related to sea surface temperature cooling in this region.