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

Volume

6

fYear

2001

fDate

2001

Firstpage

2658

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 (T_b) 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 T_b, 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;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-7031-7

Type

conf

DOI

10.1109/IGARSS.2001.978121

Filename

978121