TY - JOUR
T1 - Upwelling in the Taiwan Strait during the summer monsoon detected by satellite and shipboard measurements
AU - Tang, Dan Ling
AU - Kester, Dana R.
AU - Ni, I. Hsun
AU - Kawamura, Hiroshi
AU - Hong, Huasheng
N1 - Funding Information:
This work was jointly supported by: (i) a Postdoctoral Fellowship to Dr. DanLing Tang from the Hong Kong University of Science and Technology (HKUST) through Dr. Ni I-Hsun; (ii) a fund from National Science Foundation of China (# 49636220) to Dr. H.S. Hong of Xiamen University; and a fund to Dr. Danling Tang from the Xiamen University Marine Environmental Laboratory, a key Lab of the Ministry of Education, China; (iii) a fund from the National Space Development Agency of Japan (NASDA) through a grant to the Asian I-Lac Project at Tohoku University; and (iv) a grant from the Croucher Foundation to Dr. Gary Heinke at HKUST. We thank Dr. Wendy Woods for use of the regional AVHRR image archive she established at HKUST.
PY - 2002/12/1
Y1 - 2002/12/1
N2 - The Taiwan Strait is located at the confluence of the East China Sea and the South China Sea in the west Pacific Ocean. Several upwelling zones in the Taiwan Strait are noted for their high fisheries production; these upwelling zones have been studied in the past decade, but we have no overall picture on the size and temporal changes of these upwelling zones due to only limited in situ observation over short periods of time. The present paper investigates upwelling in the Taiwan Strait with satellite remote sensing data of NOAA-derived Sea Surface Temperature (SST) and SeaWiFS-derived Chlorophyll-a (Chl-a) and shipboard measurements during summer 1998. Results reveal five upwelling zones: (1) coastal upwelling near Pingtan Island (PTU), (2) coastal upwelling between Meizhou and Xiaman (MXU), (3) big coastal upwelling near Dongshan Island (DSU), sometimes extending to offshore, (4) small occasional upwelling near the Penghu Island (PHU) and (5) an intensive upwelling in the Taiwan Bank (TBU). TBU was extensively studied over summer 1998. Results showed that the TBU looks like a banana in shape in the southern edge of the Taiwan Bank; it intensifies in its southeastern edge. The size of TBU was about 2500-3000 km2, with a mean value of 2796 km2. The temperature difference between the upwelling and non-upwelling areas was about 2.5-3.5°C for early August with a mean value of 2.3°C on July to October. Series of images indicated a short-term variation of TBU and showed that high Chl-a concentrations (up to 0.8-2 mg m-3) zones coincided with low SST (25-26°C) zones in terms of location, time, and shape. These upwelling zones change with size and intensity center from time to time. Field measurements of water temperature, salinity, and Chl-a in 1998 are consistent with satellite measurements.
AB - The Taiwan Strait is located at the confluence of the East China Sea and the South China Sea in the west Pacific Ocean. Several upwelling zones in the Taiwan Strait are noted for their high fisheries production; these upwelling zones have been studied in the past decade, but we have no overall picture on the size and temporal changes of these upwelling zones due to only limited in situ observation over short periods of time. The present paper investigates upwelling in the Taiwan Strait with satellite remote sensing data of NOAA-derived Sea Surface Temperature (SST) and SeaWiFS-derived Chlorophyll-a (Chl-a) and shipboard measurements during summer 1998. Results reveal five upwelling zones: (1) coastal upwelling near Pingtan Island (PTU), (2) coastal upwelling between Meizhou and Xiaman (MXU), (3) big coastal upwelling near Dongshan Island (DSU), sometimes extending to offshore, (4) small occasional upwelling near the Penghu Island (PHU) and (5) an intensive upwelling in the Taiwan Bank (TBU). TBU was extensively studied over summer 1998. Results showed that the TBU looks like a banana in shape in the southern edge of the Taiwan Bank; it intensifies in its southeastern edge. The size of TBU was about 2500-3000 km2, with a mean value of 2796 km2. The temperature difference between the upwelling and non-upwelling areas was about 2.5-3.5°C for early August with a mean value of 2.3°C on July to October. Series of images indicated a short-term variation of TBU and showed that high Chl-a concentrations (up to 0.8-2 mg m-3) zones coincided with low SST (25-26°C) zones in terms of location, time, and shape. These upwelling zones change with size and intensity center from time to time. Field measurements of water temperature, salinity, and Chl-a in 1998 are consistent with satellite measurements.
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U2 - 10.1016/S0034-4257(02)00062-7
DO - 10.1016/S0034-4257(02)00062-7
M3 - Article
AN - SCOPUS:0036889499
VL - 83
SP - 457
EP - 471
JO - Remote Sensing of Environment
JF - Remote Sensing of Environment
SN - 0034-4257
IS - 3
ER -
