Title :
Transmissivity of boreal forest canopies for microwave radiometry of snow
Author :
Hallikainen, Martti ; Jaaskelainen, V.S. ; Pulliainen, Jouni ; Koskinen, Jarkko
Author_Institution :
Lab. of Space Technol., Helsinki Univ. of Technol., Espoo, Finland
Abstract :
The HUTRAD airborne microwave radiometer (Helsinki University of Technology RADiometer) was used to collect data on microwave emission from snow-covered terrain, including a variety of forest types and land-cover categories in two test sites: the Tuusula test site in southern Finland, and the Syote test site in northern Finland. HUTRAD operates at 6.8, 10.65, 18.7, 23.8, 36.5, and 94 GHz, vertical and horizontal polarization, using a look angle of 50° off nadir. Forest information was used to determine the effect of forest canopies to the brightness temperature of snow-covered terrain. The results are expressed as the forest transmissivity vs. stem volume and observation frequency
Keywords :
hydrological techniques; radiometry; remote sensing; snow; 6.8 to 94 GHz; EHF; Finland; HUTRAD; SHF; Syote test site; Tuusula test site; airborne microwave radiometer; biomass; boreal forest; brightness temperature; hydrology; measurement technique; microwave emission; microwave radiometry; polarization; remote sensing; snow cover; snow-covered terrain; snowcover; snowpack; stem volume; transmissivity; vegetation canopy; Brightness temperature; Frequency; Information retrieval; Laboratories; Microwave radiometry; Polarization; Satellite broadcasting; Snow; Space technology; Testing;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2000. Proceedings. IGARSS 2000. IEEE 2000 International
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-6359-0
DOI :
10.1109/IGARSS.2000.857273
