Dynamics of Atmospheres and Oceans Seasonal Surface Ocean
Dynamics of Atmospheres and Oceans 47 (2009) 114–137 Contents lists available at ScienceDirect Dynamics of Atmospheres and Oceans journal homepage: www.elsevier.com/locate/dynatmoce Seasonal surface ocean circulation and dynamics in the Philippine Archipelago region during 2004–2008 Weiqing Han a,∗, Andrew M. Moore b, Julia Levin c, Bin Zhang c, Hernan G. Arango c, Enrique Curchitser c, Emanuele Di Lorenzo d, Arnold L. Gordon e, Jialin Lin f a Department of Atmospheric and Oceanic Sciences, University of Colorado, UCB 311, Boulder, CO 80309, USA b Ocean Sciences Department, University of California, Santa Cruz, CA, USA c IMCS, Rutgers University, New Brunswick, NJ, USA d EAS, Georgia Institute of Technology, Atlanta, GA, USA e Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA f Department of Geography, Ohio State University, Columbus, OH, USA article info abstract Article history: The dynamics of the seasonal surface circulation in the Philippine Available online 3 December 2008 Archipelago (117◦E–128◦E, 0◦N–14◦N) are investigated using a high- resolution configuration of the Regional Ocean Modeling System (ROMS) for the period of January 2004–March 2008. Three experi- Keywords: ments were performed to estimate the relative importance of local, Philippine Archipelago remote and tidal forcing. On the annual mean, the circulation in the Straits Sulu Sea shows inflow from the South China Sea at the Mindoro and Circulation and dynamics Balabac Straits, outflow into the Sulawesi Sea at the Sibutu Passage, Transport and cyclonic circulation in the southern basin. A strong jet with a maximum speed exceeding 100 cm s−1 forms in the northeast Sulu Sea where currents from the Mindoro and Tablas Straits converge.
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