Phân bố không gian – thời gian hàm lượng chlorophyll-a, nhiệt độ nước biển tầng mặt vùng biển Nam Trung Bộ từ dữ liệu MODIS Aqua năm 2017

Abstract

    Chorophyll-a (chl-a) and Sea Surface Temperature (SST) play an important role in marine ecosystems. Spatio-temporal distribution of chl-a and SST have been assessed from MODIS Aqua data (monthly, level 3) in the coastal marine area of Vietnam South Centre in 2017. The results showed that chl-a, SST varied significantly between months (ANOVA, P<0.05); spatial distribution of chl-a decreased from coastal to offshore regions. The average of chl-a in 2017 was 0.26 mg/m³, ranged from 0.01 to 9.74 mg/m³. SST ranged from 20.73 to 31.24 ºC, the average of SST reached 27.63 ºC. During the southwest monsoon, highest chl-a concentration was concentrated on Binh Thuan coastal region and spread in the northwest – southeast direction. The lowest average SST also occurred at Binh Thuan coastal region, spread to the east of the study area during southwest monsoon period. The spatio-temporal distribution of chl-a, SST could be used to monitor the marine environmental quality of the study area.

Keywords: chl-a, coastal marine area of Vietnam South Centre, MODIS Aqua, SST