Vehicle-mounted dual optical path differential absorption spectrum-based source list obtaining method and device

Abstract

The invention discloses vehicle-mounted dual optical path differential absorption spectrum-based source list obtaining method and device. The method comprises the steps of obtaining vertical column concentration of a conventional pollution gas on an observation path through a vehicle-mounted dual optical path differential absorption spectrum device, carrying out latticed reconstruction on pollution gas distribution in a vehicle-mounted observation path by using an inner interpolation method, and coupling wind speed data and wind direction data (v) to determine the variation deltaVCD / / V of the vertical column concentration of the pollution gases in lattice points along a wind field direction; and calculating the external emission Flux of each lattice point within a time period by combining with an intercept L perpendicular to V of the lattice point along the vertical wind direction, wherein the emission list in the area is a set of the emissions of the pollution gases in the lattice points in the observation area. Fast obtaining of the source list in the observation area is achieved through determining the variation of the vertical column concentration of the pollution gases in the lattice points along the wind field direction and then obtaining the emissions of the lattice points by combining with the intercepts of the lattice pints along the vertical wind direction.

Description

technical field [0001] The invention belongs to an optical remote sensing method and device, in particular to a source list acquisition method and device based on a vehicle-mounted dual optical path differential absorption spectrum. Background technique [0002] The emission source inventory is a database listed by emission source type, which is the emission of different pollutants emitted into the atmosphere by various air pollution sources within a certain period of time. At present, methods for obtaining emission data of pollution sources include satellite remote sensing and model calculation, in addition to commonly used pollution source survey and statistics methods. Foreign scholars believe that due to the lack of reliable emission data in developing countries, it is very difficult to quantify the emission in these places and explore the local or regional impact, so they use satellites to estimate the flux of regional pollutant emissions. The satellite remote sensing ...

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Problems solved by technology

However, with the rapid development of China and the frequent changes of pollution sources, this source inventory based on survey methods has a strong time lag.

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