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| Titel |
Upper ocean response to the passage of two sequential typhoons |
| VerfasserIn |
D. B. Baranowski, P. J. Flatau, S. Chen, P. G. Black |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1812-0784
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| Digitales Dokument |
URL |
| Erschienen |
In: Ocean Science ; 10, no. 3 ; Nr. 10, no. 3 (2014-06-30), S.559-570 |
| Datensatznummer |
250117009
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| Publikation (Nr.) |
 copernicus.org/os-10-559-2014.pdf |
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| Zusammenfassung |
| The atmospheric wind stress forcing and the oceanic response are examined
for the period between 15 September 2008 and 6 October 2008, during which
two typhoons – Hagupit and Jangmi – passed through the same region of the
western Pacific at Saffir–Simpson intensity categories one and three,
respectively. A three-dimensional oceanic mixed layer model is compared
against the remote sensing observations as well as high-repetition Argo
float data. Numerical model simulations suggested that magnitude of the
cooling caused by the second typhoon, Jangmi, would have been significantly
larger if the ocean had not already been influenced by the first typhoon,
Hagupit. It is estimated that the temperature anomaly behind Jangmi would
have been about 0.4 °C larger in both cold wake and left side of
the track. The numerical simulations suggest that the magnitude and position
of Jangmi's cold wake depends on the precursor state of the ocean as well as
lag between typhoons. Based on sensitivity experiments we show that
temperature anomaly difference between "single typhoon" and "two
typhoons"
as well as magnitude of the cooling strongly depends on the distance between
them. The amount of kinetic energy and coupling with inertial oscillations
are important factors for determining magnitude of the temperature anomaly
behind moving typhoons. This paper indicates that studies of
ocean–atmosphere tropical cyclone interaction will benefit from denser, high-repetition Argo float measurements. |
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