Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2014, Vol. 11, No. 3, pp. 259-267
Validation of remote sensing products generated from space-based microwave radiometers data
D.M. Karavaev
1 , Yu.V. Kuleshov
1 , A.B. Uspensky
2 , G.G. Shchukin
1
1 A.F. Mozhaisky Military Aerospace Academy, Saint Petersburg, Russia
2 Scientific Research Center for Space Hydrometeorology "Planeta", Moscow, Russia
Validation issues of satellite based temperature-humidity profile retrieval are considered. The comparative characteristics of advanced satellite-based microwave radiometers (SSMIS, ATMS, AMSU, AMSR2, MTVZA) intended to obtain information about the parameters of the atmosphere and the underlying surface are presented. Methodical aspects of determining the atmospheric water vapor, cloud liquid, atmospheric temperature-humidity profiles using ground-based microwave radiometers are considered. The results of comparison satellite based products with upper-air and ground-based microwave radiometric soundings of the atmosphere are reviewed. In particular, it was found that for the North West and the West Siberian regions of Russia, the accuracy of determining the temperature of atmosphere on satellite data ATOVS is 1.3-2.3 K at high-altitude levels of 300-850 hPa and the relative error of determination of specific humidity is around 15-30%. Displaying agreed the SSMI data water vapor of the atmosphere over the ocean with the ship-based microwave radiometer (22 GHz and 36 GHz). Microwave radiometric measurements of water vapor are in good agreement with the data synchronized upper-air sounding (RMS between the data of the ship-based radiometer and the radiosonde is 2 kg/m2). The problems of test site equipment for the validation of satellite-based temperature-humidity sounding of the atmosphere and prospects of using polygon Lehtusi (Leningrad region) for the validation of information products derived from data of microwave radiometer (MTVZA) and radar (BRLK) on-board Meteor-M satellite are under discussion.
Keywords: microwave radiometer, brightness temperature, profile of temperature of atmosphere, profile of humidity of atmosphere, cloud liquid, water vapor, cloud liquid, validation.
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