Title :
A diurnal difference indicator for freeze-thaw monitoring from Ku band scatterometer applied within the Siberia II project
Author :
Kidd, Richard ; Scipal, Klaus ; Bartalis, Zoltan ; Wagner, Wolfgang
Author_Institution :
Inst. of Photogrammetry & Remote Sensing, Vienna Univ. of Technol.
Abstract :
We present and assess a diurnal difference indicator that is related directly to the seasonal freeze-thaw effects, focusing, in this paper, primarily on the onset of snowmelt and terrestrial thawing. In order to be able to provide a level of certainty with the indicator our approach is based upon the development, and application, of a noise model that accounts for instrument noise, speckle, spatial heterogeneity, "environmental" noise and the influence of azimuth angle at which the measurement was acquired
Keywords :
atmospheric composition; atmospheric techniques; atmospheric temperature; climatology; geophysical equipment; melting; snow; vegetation mapping; Ku band scatterometer; Siberia II project; atmospheric composition; atmospheric temperature; azimuth angle influence; climatology; diurnal difference indicator; environmental noise; freeze-thaw monitoring; instrument noise; noise model; seasonal freeze-thaw effects; snowmelt; spatial heterogeneity; speckle; terrestrial thawing; vegetation mapping; Backscatter; Carbon dioxide; Data mining; Earth; Noise level; Radar measurements; Remote monitoring; Sampling methods; Scattering; Switches;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-8742-2
DOI :
10.1109/IGARSS.2004.1370651
