Title :
OCEANSAT-1 MSMR and the emissivity of ice in Antarctica
Author :
Dash, Mihir K. ; Bhandari, S.M. ; Vyas, N.K. ; Khare, N. ; Mitra, Abhijit ; Pandey, P.C. ; Kulandaivelu, E. ; Negi, P.S.
Author_Institution :
ISRO/Space Application Centre, Ahmedabad, India
Abstract :
The data from OCEANSAT-1 MSMR in the passive microwave region have been analyzed to estimate the ice surface emissivities (ε) over Antarctica. The Indian Station Maitri (70°45´ S, 11°45´ E) was chosen for the first case study. The brightness temperatures (Tb ) were retrieved over Maitri from the satellite data at 18 and 21 GHz for both the V and the H polarizations. The in situ measurements of the ice surface temperatures (Tp) were collected by the Indian scientists stationed at Maitri. The Tb, and the Tp values were used to derive the ε values. The results show that the estimated ε values are in good agreement with the expected values, thereby confirming that the MSMR data can be used for mapping the surface emissivity of the ice-sheets in Antarctica to a reasonable degree of accuracy
Keywords :
glaciology; microwave measurement; remote sensing; 18 GHz; 21 GHz; Antarctica; H polarization; Indian Station Maitri; Multi-channel Scanning Microwave Radiometer; OCEANSAT-1 MSMR data; V polarization; brightness temperatures; ice sheets; ice surface emissivity; ice surface temperatures; satellite data; Antarctica; Ice; Oceans;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.978121
