Title :
Polarimetric microwave emission from snow surfaces: 4th Stokes component analysis
Author :
Narvekar, Parag S. ; Heygster, Georg ; Jackson, Thomas J. ; Bindlish, Rajat
Author_Institution :
Univ. of Bremen, Bremen
Abstract :
The effect of ice on polarimetric 4th Stokes component observations is investigated using WindSat data over Antarctica. The difference in the magnitude of the signal observed during (July 2003) and summer (February 2004) months are investigated using a second harmonic sine function of the azimuth look angle. The seasonal variations are further investigated by a time series of the 4,th Stokes component for a location in Wilkes Land in east Antarctica and compared with a time series observed by the ERS scatterometer (ESCAT) from a previous work. The paper discusses the potential of a polarimetric radiometer in providing information about scattering and thermal properties of a snow ice pack.
Keywords :
ice; microwave imaging; principal component analysis; snow; 4th Stokes component analysis; AD 2003 07; AD 2004 02; Antarctica; ERS scatterometer; Wilkes Land; WindSat data; azimuth look angle; ice effect; polarimetric microwave emission; polarimetric radiometer; second harmonic sine function; snow ice pack thermal properties; snow surfaces; time series; Antarctica; Azimuth; Ice; Land surface; Ocean temperature; Radar measurements; Sea measurements; Sea surface; Snow; Surface topography;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2007. IGARSS 2007. IEEE International
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-1211-2
Electronic_ISBN :
978-1-4244-1212-9
DOI :
10.1109/IGARSS.2007.4422908
