Infrared brightness temperature simulation method fusing numerical mode and satellite microwave cloud inversion data

Abstract

The invention discloses an infrared brightness temperature simulation method fusing a numerical mode and satellite microwave cloud inversion data, and relates to the field of atmospheric science research, and the method specifically comprises the following steps: 1) preprocessing WRF numerical simulation data and satellite ATMS microwave cloud inversion data; 2) performing quality control on satellite ATMS microwave cloud inversion data; and 3) performing data fusion on the WRF numerical simulation data and the satellite ATMS microwave cloud inversion data after quality control to obtain a fusion analysis field of atmospheric cloud water, cloud ice and rainwater; and 4) extracting atmospheric conventional elements of the numerical simulation data and atmospheric cloud water substance elements of the fusion analysis data as vertical profiles, taking the vertical profiles as input profiles of a radiation transfer model (CRTM), calculating a satellite infrared simulation brightness temperature on each lattice point, and converting a satellite infrared simulation brightness temperature value to a CrIS view field by adopting a view field matching technology of CrIS observation and lattice point data. According to the invention, the simulation level of the clouded region is improved.

Description

technical field [0001] The invention relates to the field of atmospheric science research, specifically an infrared brightness temperature simulation method that integrates numerical models and satellite microwave cloud inversion data. The method is mainly aimed at the brightness temperature of the CrIS infrared hyperspectral detection channel of the Suomi-NPP polar orbit satellite. mock method. Background technique [0002] With the continuous development of meteorological polar-orbiting satellite observation technology, infrared sounder and hyperspectral sounder data have been widely used in the fields of weather monitoring, weather warning, climate analysis and numerical weather prediction. Compared with traditional infrared sounders, infrared hyperspectral sounders have more channels, and channels of different frequencies are sensitive to different levels of the surface or atmosphere, making them an important source of observational information in numerical weather predi...

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Problems solved by technology

[0006] The existing satellite infrared brightness temperature simulation method uses the simulated data of the numerical model as the input profile. When in the cloudy area, the numerical model has a large error in simulating the structure and distribution of cloud water, cloud ice and rainwater. If the numerical model If the data is directly applied without correction, it will lead to a large error in the description of the cloud effect in the radiative transfer simulation, resulting in an unsatisfactory simulation effect of the satellite infrared brightness temperature

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