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Na, H. ., University of Rhode Island, Narragansett, USA, hanna.ocean@gmail.com
Park, J. ., Korea Ocean Research&Development Institute, Ansan, Republic Of Korea, jhpark@kordi.re.kr
Lee, H. ., Korea Maritime University, Busan, Republic Of Korea, hjlee@hhu.ac.kr
Watts, D. R., University of Rhode Island, Narragansett, USA, rwatts@gso.uri.edu

NEAR 13-DAY BAROTROPIC OCEAN RESPONSE TO THE ATMOSPHERIC FORCING IN THE NORTHWESTERN PACIFIC

Ocean bottom pressure measurements from an array of 43 pressure-recording inverted echo sounders, which were part of the Kuroshio Extension System Study (KESS), reveal fluctuations of about 13-day period in the Northwestern Pacific. The fluctuation is characterized by “common mode” which shows coherent in-phase oscillations with a relatively large amplitude in the northeastern part of the observational domain. It also shows energetic fluctuations in the winter season during the 2-year observational period. Regression analysis with wind stress curl field reveals a significant correlation between them, which suggests that the near 13-day barotropic ocean response observed from the bottom pressure array is driven by the large-scale atmospheric forcing in the Northwestern Pacific. This finding is confirmed by a daily-wind forced barotropic ocean model that produces similar near 13-day sea level fluctuations.

Poster presentation

Session #:068
Date: 2/20/2012
Time: 17:00 - 18:00
Location: Poster/Exhibit Hall

Presentation is given by student: No

PosterID: B1887