Circulation in the Philippine Archipelago. Simulated by 1/12 deg. and 1/25 deg. Global HYCOM and EAS NCOM
NAVAL RESEARCH LAB STENNIS SPACE CENTER MS OCEANOGRAPHY DIV
Pagination or Media Count:
In PhilEx 112 and 125 world ocean models provided a global context for the Philippine Archipelago circulation. This archipelago provides two secondary routes for both the Indonesian throughflow and the western boundary current of the Pacific northern tropical gyre. These enter via Mindoro and Surigao Straits and exit via Sibutu Passage. The outflow continues through Makassar Strait, the primary conduit of the Indonesian throughflow, at all depths above the Sibutu Passage sill. In the model simulations 2004 and 2008, 2008 the central year for PhilEx observations, are extreme opposite anomalous years with strong southward Mindoro transport in 2004 and mean northward transport in 2008, but with little effect on the second route, results verified using satellite altimetry. A PhilEx mooring in Mindoro Strait and 112 global HYCOM were used to estimate mean transports of 0.24 Sv northward over the anomalous observational period and 0.95 Sv southward over 2004-2009.
- Physical and Dynamic Oceanography