Abstract
Results of studies on analysis, correction, and assimilation of microwave and infrared satellite observations in the global data assimilation system of the Hydrometcenter of Russia are presented. Technique and results of adaptive correction (external calibration) of atmospheric sounding and imaging channels of the microwave radiometer MTVZA-GYa on board the Russian polar orbiting satellites of Meteor-M series are described. Assimilation of observations from the hyperspectral infrared Fourier spectrometer IFKS-2, which is also a part of the Meteor-M satellites payload, is presented. The assimilation technique includes a new scheme for selection of the most informative channels through orthogonalization of the so called Jacobians. Numerical experiments show that short-range forecasts almost equally benefit from assimilation of IKFS-2 and IASI data.
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