Laser radar transport flux computing method and laser radar transport flux computing device

Abstract

The invention provides a laser radar transport flux computing method and a laser radar transport flux computing device. The laser radar transport flux computing method includes acquiring extinction coefficients of particulate pollutants collected by laser radar as well as reanalysis-mode meteorological data including wind-field data and humidity data; subjecting the extinction coefficients to humidity correction according to the humidity data in the reanalysis-mode meteorological data so as to obtain dry aerosol extinction coefficients; computing particulate pollutant vertical profiles according to the dry aerosol extinction coefficients and ground monitoring particulate pollutants; computing laser radar transport fluxes according to the particulate pollutant vertical profiles and the wind-field data of the reanalysis-mode meteorological data. The laser radar transport flux computing method has the advantages that the reanalysis-mode meteorological data are used for humidity correction of the extinction coefficients and laser radar transport flux computation, are acquired simply at a quite low cost and comprise the wind-field data and the humidity data which are both high in precision, and accordingly the whole laser radar transport flux computing method is low in cost and high in popularization degree.

Description

technical field [0001] The invention relates to the field of environmental monitoring, in particular to a method and device for calculating laser radar delivery flux. Background technique [0002] Laser radar (LIDAR) is currently the most effective means of detecting the vertical distribution of particle pollutants (Particle Mater PM, also known as atmospheric aerosol). The current methods for detecting particulate pollutants mainly include: obtaining the extinction coefficient product of particulate pollutants in the detection area through lidar, obtaining wind field data in the detection area through Doppler wind profile radar, and then using the wind data provided by the wind profile radar to The field data is combined with the extinction coefficient product of the lidar to calculate the transport flux of particulate pollutants in the detection area. [0003] In the current particle pollution detection method, the Doppler wind profile radar (Doppler Windprofile radar) is...

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Problems solved by technology

[0003] In the current particle pollution detection method, the Doppler wind profile radar (Doppler Windprofile radar) is mainly used to obtain wind field data, but the Doppler wind profile radar is very expensive, the price is as high as several million and the popularity In addition, typhoon profile radars can only detect wind field data in a certain area, and if the monitoring area is large, multiple typhoon profile radars are required, which is more difficult to achieve

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