Sea surface cooling caused by typhoons in the Tohoku area in August 1989

A remarkable sea surface cooling event was observed in the north western Pacific off Japan coast, which is known as the Tohoku Area, by using well‐calibrated satellite sea surface temperature images, when typhoons T8914 and T8915 passed over the Tohoku Area in August 1989. The sea surface cooling ma...

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Bibliographic Details
Published in:Journal of Geophysical Research 1998-01, Vol.103 (C1), p.1053-1065
Main Authors: Sakaida, Futoki, Kawamura, Hiroshi, Toba, Yoshiaki
Format: Article
Language:English
Subjects:
Earth, ocean, space
Exact sciences and technology
External geophysics
Marine
Physics of the oceans
Sea-air exchange processes
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Summary:A remarkable sea surface cooling event was observed in the north western Pacific off Japan coast, which is known as the Tohoku Area, by using well‐calibrated satellite sea surface temperature images, when typhoons T8914 and T8915 passed over the Tohoku Area in August 1989. The sea surface cooling maximum reached up to 9°C, which is much larger than that reported in the previous studies. The corresponding hydrographic data show that the sea surface cooling state is closely related with the ocean structure in the Tohoku Area; the larger sea surface cooling occurs in the Oyashio area. The numerical experiments taking account of the ocean structure show that the surface cooling maximum is 3–4 times larger in case of the Oyashio profile than that of the Kuroshio profile and clarify the mechanism of the sea surface cooling.
ISSN:0148-0227
2169-9275
2156-2202
2169-9291
DOI:10.1029/97JC01859