Carbon dioxide flux inversion method and system

Abstract

The invention provides a carbon dioxide flux inversion method and system, thereby solving problems that an existing method and system are poor in generalization performance and not suitable for GMI loads. The method comprises the following steps: acquiring GMI data, performing carbon dioxide column concentration inversion to obtain a carbon dioxide average column concentration observation value, and performing height interpolation to obtain a carbon dioxide profile observation value; simulating a regional atmospheric land carbon flux exchange mode based on an RAMS-CMAQ simulation model; and performing calculating by taking the carbon dioxide average column concentration simulation value as an observation operator and taking the sum of carbon dioxide fluxes in an emission list of the RAMS-CMAQ model as a priori value of the carbon dioxide fluxes and adopting an integrated four-dimensional variation assimilation method to obtain a carbon dioxide flux assimilation value and a carbon dioxide column concentration assimilation value. The system uses the method. According to the invention, the carbon dioxide flux is calculated by applying the GMI load.

Description

technical field [0001] The invention relates to the field of satellite remote sensing, in particular to a carbon dioxide flux inversion method and system. Background technique [0002] Global Atmospheric Chemistry Models in Global Carbon Cycle Studies Study Global CO 2 (CO2) spatiotemporal distribution and transport mechanism simulation analysis and diagnosis played an important role. Existing data assimilation techniques combine atmospheric chemical transport models and CO 2 Observation data from ground stations, which is used to retrieve surface CO 2 fluxes, but since most of the observations themselves only represent the ecosystem CO around the observatory 2 Budget characteristics, direct extrapolation of station observations to larger regional scales leads to large uncertainties. In addition, due to the scarcity of ground-based observation stations and the extremely uneven distribution in the world, the assimilation system has greatly reduced the CO2 optimization in ...

AI Technical Summary

Problems solved by technology

[0003] The present invention provides a carbon dioxide flux inversion method and system, which solves the problems of poor generalization and inapplicability of GMI loads in existing methods and systems

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