Analysis of multiscale radiometric data collected during the Cold Land Processes Experiment-1 (CLPX-1)

Details Analysis of multiscale radiometric data collected during the Cold Land Processes Experiment-1 (CLPX-1) Analysis of multiscale radiometric data collected during the Cold Land Processes Experiment-1 (CLPX-1)

Sep 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005georl..3218501t&link_type=abstract

Geophysical Research Letters, Volume 32, Issue 18, CiteID L18501

Physics

Geophysics

4

Cryosphere: Snow (1827, 1863), Biogeosciences: Remote Sensing, Nonlinear Geophysics: Scaling: Spatial And Temporal (1872, 3270, 4277)

Scientific paper

Histograms of brightness temperatures collected at 18.7 and 37 GHz over the Fraser and North Park Meso-Scale Areas during the Cold Land Processes Experiment by the NOAA Polarimetric Scanning Radiometer (PSR/A) airborne sensor are modelled by a log-normal distribution (Fraser, forested area) and by a bi-modal distribution (North Park, patchy-snow, non-forested area). The brightness temperatures are re-sampled over a range of resolutions to study the effects of sensor resolution on the shape of the distribution, on the values of the average brightness temperatures and standard deviations. The histograms become more uniform and the spatial information in the initial distribution is lost for a resolution larger than 5000 m, in both areas. The values of brightness temperatures obtained by re-sampling the PSR-A data at 25 km resolution are consistent with those recorded by the Advanced Microwave Scanning Radiometer (AMSR-E) and Special Sensor Microwave/Imager (SSM/I) satellite radiometers at similar resolutions.

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