Sea-surface temperatures and the history of monsoon upwelling in the Northwest Arabian Sea during the last 500,000 years
Foraminifera ; Glacial features ; Indian Ocean ; Interglacial ; Model ; Monsoon ; Ocean atmosphere interaction ; Oxygen 18 ; Palaeo-environment ; Quaternary ; Surface temperature ; Upwelling
Arabian Sea Sediments record changes in the upwelling system off Arabia, which is driven by the monsoon circulation system over the NW Indian Ocean. In accordance with climate models, and differing from other large upwelling areas of the tropical
ocean, a 500,000-yr record of productivity at ODP Site 723 shows consistently stronger upwelling during interglaciations than during glaciations. The objective is to reconstruct the history of SST (Sea-Surface Temperatures) and productivity variations
using a multiproxy approach so that the AA. can separate the effects of changes in SST due to upwelling or unrelated to upwelling.