Spatial and temporal variations of satellite-derived phytoplankton biomass in the Malacca Straits

Eko Siswanto; Katsuhisa Tanaka

doi:10.1117/12.977408

21 November 2012 Spatial and temporal variations of satellite-derived phytoplankton biomass in the Malacca Straits

Eko Siswanto, Katsuhisa Tanaka

Proceedings Volume 8525, Remote Sensing of the Marine Environment II; 85250K (2012) https://doi.org/10.1117/12.977408
Event: SPIE Asia-Pacific Remote Sensing, 2012, Kyoto, Japan

Abstract

The Sea-Viewing Wide Field-of-view Sensor (SeaWiFS)-derived chlorophyll-a (Chl-a) data within 13-year full SeaWiFS mission were analysed to understand the spatial and temporal variations of phytoplankton biomass in the Malacca Straits. Other data from multi-sensors were also exploited to understand probable factors governing SeaWiFS Chl-a variation. SeaWiFS Chl-a showed remarkable seasonal variation which was high and low during northeast monsoon and southwest monsoon, respectively, especially in the north and middle regions of the Malacca Straits. Analysis results on the long-term trend showed that SeaWiFS Chl-a has experienced long-term increase especially in the south region of the Malacca Straits. In the north region on the other hand, SeaWiFS Chl-a was relatively stable within the SeaWiFS full mission period. The observed seasonal variation and long-term increasing trend of SeaWiFS Chl-a in the south region of the Malacca Straits however might not be associated with real phytoplankton biomass. High suspended sediment due to both bottom sediment re-suspension and sediment loaded from the land by river discharge might lead to incorrect Chl-a retrieval by SeaWiFS ocean color sensor. SeaWiFS Chl-a spatial and temporal variations in the north region of the Malacca Straits seemed to be more determined by wind-driven physical forcing such as water column mixing and/or upwelling.

Citation Download Citation

Eko Siswanto and Katsuhisa Tanaka "Spatial and temporal variations of satellite-derived phytoplankton biomass in the Malacca Straits", Proc. SPIE 8525, Remote Sensing of the Marine Environment II, 85250K (21 November 2012); https://doi.org/10.1117/12.977408

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