A Method to Accelerate the Inversion Speed ​​of Greenhouse Gas Vertical Column Concentration

Abstract

The invention discloses a method for increasing the inversion speed of concentration of a greenhouse-gas vertical column. The method increases the inversion speed of concentration of the greenhouse-gas vertical column through two ways of increasing a spectrum modeling speed and a continuous calculation speed for the concentration of vertical column. In the spectrum modeling process, the modeling speed is increased by ignoring the influence of some weak interference factors and discretized radiative transfer equations. In the continuous inversion process of concentration of the greenhouse-gas vertical column, a table look-up method is adopted to increase the calculation speed of the concentration of the greenhouse-gas vertical column: the solar normalized radial brightness and weighting function of all possible scenes are simulated firstly, correction factors are counted when all spectra adopt the value of simulation of one specific scene for inversion fitting, and a correction chart is made; during follow-up data processing, the measurement spectra of all scenes can adopt the value of simulation of the specific scene for fitting, only the fitting result multiplies by corresponding correction factors in the chart, and the measurement spectra of all scenes do not need modeling.

Description

technical field [0001] The invention relates to the field of spectrum inversion of gas vertical column concentration in ambient atmosphere, in particular to a method for accelerating the inversion speed of greenhouse gas vertical column concentration. Background technique [0002] The greenhouse effect caused by greenhouse gases will cause a series of environmental and economic problems, such as the continuous rise of global temperature, the melting of glaciers, the rise of sea level, the increase of pests and diseases on the earth, the abnormal climate, the increase of ocean storms and so on. At present, many countries are monitoring the fluctuation of vertical column concentration of greenhouse gases in the ambient atmosphere online in real time to ensure that the emitted greenhouse gases comply with relevant emission reduction regulations. [0003] The greenhouse gas carbon dioxide (CO 2 ), methane (CH 4 ), nitrous oxide (N 2 O) and other strong absorption bands are ma...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for speeding up the inversion speed of the vertical column concentration of greenhouse gases, so as to solve the problems of relatively complex observation methods, relatively low signal-to-noise ratio of measurement spectra, complex spectral modeling conditions, and high spectral modeling speed in the prior art. Slow, cumbersome inversion steps of vertical column concentration of gases lead to slow inversion speed, unable to quickly distinguish the fluctuation law of vertical column concentration of greenhouse gases

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