Detection of Short-term Chlorophyll-a Change with Sea Surface Cooling from Satellite Data
نویسندگان
چکیده
Cold nutrient-rich water from below the shallow seasonal thermocline is sometimes injected into the surface layer when a storm passes in a warm season. Decrease in sea surface temperature (SST) and increase in chlorophyll-a concentration (Chl-a) in a short period due to storm passages have been clearly captured by satellite observations [1]. Understanding the short-term Chl-a increase phenomena associated with atmospheric disturbances will be important, for example, for the estimation of primary production [2] [3]. However, most of previous studies utilized hurricane/typhoon best track data and focused on tropical cyclones (TCs) only. In this study, we aimed at comprehensively detecting the rapid Chl-a increase and SST cooling events that accompanied atmospheric disturbances over the northwestern Pacific Ocean considering extratropical cyclones as well as typhoons by analyzing satellite data from August 2002 to July 2007.
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