A Direct Calculation Method for Space-Based Active Detection of Greenhouse Gas-Flux

Abstract

Facing the major scientific issues of the global carbon cycle and the monitoring demand for carbon emission reduction all over the world, this paper researches and develops a new calculation method for space-based remote sensing detection of greenhouse gas-flux based on the atmospheric boundary layer turbulence transport theory and the active detection of coherent differential absorption lidar system. By obtaining the atmospheric wind profile information, gas concentration profile information and the new calculation method for space-based gas-flux proposed in this paper, the near-surface gas-flux information in the detected area can be directly obtained. So it can innovatively realize the space-based active and direct remote sensing of the atmospheric boundary layer gas-flux. The method in this paper not only can make up the blank in the space-based active detection of greenhouse gas-flux, but also can realize the high spatial and temporal resolution measurement of the three-dimensional atmospheric motion. It reduces assumptions and errors of the existing model based on the column concentration assimilation inversion method, so it can realize a direct and active observation of global multi-scale, high-quality, long-sequence gas-flux.