Method for improving inversion accuracy of high greenhouse gas concentration

Abstract

The invention discloses a method for improving the inversion accuracy of high greenhouse gas concentration. The method has the beneficial effects that (1) a certain infrared spectrum screening rule is constructed so as to eliminate measurement spectrums with great influence caused by the cloud layer, aerosol and the like or extremely poor fitting effect, and compared with the prior art, a target spectrum is high in selectivity; (2) physical parameters are observed through a precise measurement spectrum to realize accurate modeling of the measurement spectrum, so that the reference spectrum precision is improved; (3) in a greenhouse gas concentration inversion process, a correction spectrum is added for fitting, so that a sun structure and a system structure are corrected, and the correction method adopting the correction spectrum is obviously better than a correction method in the prior art. According to the method, the Fraunhofer structure of the sun can be corrected, and the fixed structure of a system can be corrected; furthermore, the correction spectrum is obtained by fitting through a same spectrometer, so that an error caused by the performance difference of different instruments is avoided; by the use of the method, the same experiment device can obtain high greenhouse gas concentration inversion precision.

Description

technical field [0001] The invention relates to the field of spectral inversion of gas concentration in ambient atmosphere, in particular to a method for improving the inversion accuracy of greenhouse gas concentration. Background technique [0002] The greenhouse effect has become a global environmental problem, which has attracted widespread attention from all over the world. The greenhouse effect caused by greenhouse gases will produce a series of environmental and economic problems, for example, causing global temperature to continue to rise, glaciers to melt, sea level rise, increase in pests and diseases on the earth, abnormal climate, increase in ocean storms and so on. At present, many countries are monitoring fluctuations in the 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] carbon dioxide (CO 2 ), methane (CH 4 ), nitrous oxi...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the inversion accuracy of greenhouse gas concentration, so as to solve the problem that the prior art cannot accurately judge the attenuation of non-gas absorption spectrum, cannot accurately obtain the physical parameters of measurement spectrum observation, and cannot accurately correct the structure of the sun and the inherent structure of the system As a result, the relative inversion accuracy is low, and it is impossible to distinguish the fluctuation law of greenhouse gas concentration with high precision.

Images