Publications

Shuva, MSH; Golder, MR; Rouf, MA; Uddin, MM; Bir, J (2022). Daytime and Nighttime Sea Surface Temperature (SST) along with Diurnal Variability (D-SST) in the Northern Bay of Bengal: A Remote Sensing Approach. THALASSAS, 38(1), 697-708.

Abstract
This study examined daytime and nighttime sea surface temperature (SST) and its diurnal variability (D-SST) in three regions of the northern Bay of Bengal (BoB) during 2000-2019 by using MODIS Terra satellite data. An increasing trend of SST was observed in the Bangladesh coast, outer coast, and offshore. The trend was ranged around 0.10-0.16 degrees C per decade during daytime and 0.18-0.27 degrees C per decade during nighttime. The increased SST in the study area may be attributed due to rapid industrialization and global warming. Monthly SST represented four successive phases, such as warming-cooling and warming-cooling, which started in February. Month wise SST concentrations varied from 29.74 degrees C to 23.32 degrees C during nighttime and 29.613 degrees C to 23.446 degrees C during daytime in the northern BoB. The comparative SST among three different stations showed that annual offshore SST was higher during daytime and lower during nighttime than the outer & Bangladesh coast. Annual daytime maximum and minimum SST were observed at 28.45 degrees C and 27.27 degrees C, respectively. During the nighttime, it was ranged from 28.33 degrees C to 27.05 degrees C. The presence of nearby landmass may be the factor behind the variation of SST during day and nighttime. About 65-80% of monthly D-SST and 70-80% of annual D-SST value was recorded below 0.3 degrees C in our study area. A significantly (p < 0.001) moderate correlation (r = 0.54) was found between the MODIS Terra satellite data and NODC in-situ data.

DOI:
10.1007/s41208-022-00406-8

ISSN:
2366-1674