Premium
Influence of the Interaction Between Typhoons and Oceanic Mesoscale Eddies on Phytoplankton Blooms
Author(s) -
Liu Fenfen,
Tang Shilin
Publication year - 2018
Publication title -
journal of geophysical research: oceans
Language(s) - English
Resource type - Journals
eISSN - 2169-9291
pISSN - 2169-9275
DOI - 10.1029/2017jc013225
Subject(s) - typhoon , anticyclone , environmental science , upwelling , oceanography , phytoplankton , mesoscale meteorology , algal bloom , climatology , eddy , sea surface temperature , chlorophyll a , argo , atmospheric sciences , geology , nutrient , meteorology , geography , chemistry , botany , organic chemistry , turbulence , biology
Phytoplankton blooms induced by the interaction between typhoons and oceanic mesoscale eddies in the South China Sea were investigated using the composite averaging method based on cyclone‐centric coordinates from nine years (2002–2010) of satellite observations. Increases in the chlorophyll (Chl) concentration following the passage of a typhoon differed greatly among the pre‐existing cyclonic eddy (PCE), pre‐existing anticyclonic eddy (PACE) and non‐eddy (NE) ocean conditions (with Chl increases of approximately 35%, 6% and 12%, respectively), but the magnitude of sea surface temperature (SST) cooling was similar under the three conditions (∼1°C). Under the same level of SST decreases, the greater increase in the Chl concentration in the PCE condition was attributed to the longer persistence of both SST cooling and nutrient input caused by the typhoon‐strengthened PCE (associated with upwelling), which stopped the re‐warming of the typhoon‐induced cold water.