Estimation of Phytoplankton Responses to Hurricane Gonu over the Arabian Sea Based on Ocean Color Data
Open Access
- 20 August 2008
- Vol. 8 (8) , 4878-4893
- https://doi.org/10.3390/s8084878
Abstract
In this study the authors investigated phytoplankton variations in the Arabian Sea associated with Hurricane Gonu using remote-sensing data of chlorophyll-a (Chl-a), sea surface temperature (SST) and winds. Additional data sets used for the study included the hurricane and Conductivity-Temperature-Depth data. Hurricane Gonu, presenting extremely powerful wind intensity, originated over the central Arabian Sea (near 67.7ºE, 15.1ºN) on June 2, 2007; it traveled along a northwestward direction and made landfall in Iran around June 7. Before Hurricane Gonu, Chl-a data indicated relatively low phytoplankton biomass (0.05-0.2 mg m-3), along with generally high SST (>28.5 ºC) and weak wind (-1) in the Arabian Sea. Shortly after Gonu’s passage, two phytoplankton blooms were observed northeast of Oman (Chl-a of 3.5 mg m-3) and in the eastern central Arabian Sea (Chl-a of 0.4 mg m-3), with up to 10-fold increase in surface Chl-a concentrations, respectively. The Chl-a in the two post-hurricane blooms were 46% and 42% larger than those in June of other years, respectively. The two blooms may be attributed to the storm-induced nutrient uptake, since hurricane can influence intensively both dynamical and biological processes through vertical mixing and Ekman Pumping.Keywords
This publication has 34 references indexed in Scilit:
- Observations of a Hurricane Katrina‐induced phytoplankton bloom in the Gulf of MexicoGeophysical Research Letters, 2007
- Upper‐ocean response to Hurricane Ivan in a 1/25° nested Gulf of Mexico HYCOMJournal of Geophysical Research: Oceans, 2007
- Offshore and nearshore chlorophyll increases induced by typhoon winds and subsequent terrestrial rainwater runoffMarine Ecology Progress Series, 2007
- Air-sea Coupling During the Tropical Cyclones in the Indian Ocean: A Case Study Using Satellite ObservationsPure and Applied Geophysics, 2005
- Satellite evidence of hurricane‐induced phytoplankton blooms in an oceanic desertJournal of Geophysical Research: Oceans, 2004
- New evidence for enhanced ocean primary production triggered by tropical cycloneGeophysical Research Letters, 2003
- The upper-ocean response to monsoonal forcing in the Arabian Sea: seasonal and spatial variabilityDeep Sea Research Part II: Topical Studies in Oceanography, 2000
- A comparison of phytoplankton populations of the Arabian Sea during the Spring Intermonsoon and Southwest Monsoon of 1995 as described by HPLC-analyzed pigmentsDeep Sea Research Part II: Topical Studies in Oceanography, 1998
- Currents and transports of the Great Whirl‐Socotra Gyre system during the summer monsoon, August 1993Journal of Geophysical Research: Oceans, 1996
- Influences of cyclones on chlorophyll a concentration and Synechococcus abundance in a subtropical western Pacific coastal ecosystemMarine Ecology Progress Series, 1996