Estimation of spatio-temporal variability in land surface temperature over the Ganga River Basin using MODIS data. Issue 13 (10th August 2022)

• Record Type: Journal Article
• Authors: Mal, Suraj; Rani, Seema; Maharana, Pyarimohan
• Is Part Of: Geocarto international. Volume 37:Issue 13(2022)
• Page Start: 3817
• Page End: 3839
• Publication Date: 2022-08-10
• Subjects: Land surface temperature -- elevation-dependent warming -- Himalayas -- Ganga river basin -- climate change; Remote sensing -- Periodicals; Geographic information systems -- Periodicals; Geology -- Periodicals; Cartography -- Periodicals; 621.3678
• DOI: 10.1080/10106049.2020.1869331
• Languages: English
• ISSNs: 1010-6049

Abstract

Abstract: The present study aims to estimate the trends in daytime land surface temperature (LST) and its relationship with other parameters such as elevation and land use/land cover (LULC) over the Ganga River Basin (GRB) during 2001–2019. The study examined monthly daytime clear-sky LST, elevation, LULC, snow cover area (SCA), clear-sky days, and aerosols data of the GRB. Annual mean clear-sky daytime LST has been declining at the rate −0.017 °C year −1 over the basin during the study period. At seasonal scale, LST has been rising during monsoon (average rate of 0.026 °C year −1 ), whereas other seasons show a decline with the highest magnitude during winter season (−0.078, o C year −1 ). The study observed pronounced warming trends (0.003 to 0.07 °C year −1 ) in post-monsoon above the elevation of 3000 m amsl indicating elevation-dependent warming (EDW) in the basin. The vagary in LST over the basin may be attributed to the changes in LULC, increasing aerosols loading, and rising hazy days.