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Atmospheric lower nitrogen dioxide concentration inversion method

A technology of nitrogen dioxide and concentration, which is applied in the field of satellite remote sensing inversion, can solve problems such as the inability to calculate the concentration of nitrogen dioxide columns at the bottom of the atmosphere, and achieve the effect of reducing the impact of the Ring effect and reducing the impact of polluting gases

Active Publication Date: 2019-10-29
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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Problems solved by technology

[0003] The invention provides an inversion method for nitrogen dioxide concentration at the bottom of the atmosphere, which solves the problem that the existing method cannot calculate the concentration of nitrogen dioxide columns at the bottom of the atmosphere based on satellite sensor data

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[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments of the present invention and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0022] The composition of the atmosphere, especially the tropospheric atmosphere, has changed considerably since the Industrial Revolution. After going through several stages of air pollution caused by human activities, pollution affecting human life, human beings discovering pollution, and carrying out governance, this change in atmospheric composition is still c...

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Abstract

The invention discloses an atmospheric lower nitrogen dioxide concentration inversion method, and solves the problem that an existing method cannot calculate the atmospheric lower nitrogen dioxide column concentration according to satellite sensor data. The method comprises the following steps: based on an atmospheric radiation transmission model and a satellite sensor, carrying out differential treatment on a solar spectrum and earth observation radiation flux by adopting a differential absorption spectrum algorithm to obtain a differential absorption spectrum; for the atmospheric radiation transmission model, calculating to obtain an atmospheric rotation Raman scattering cross section; obtaining a Ring effect differential pseudo-absorption cross section through the solar spectrum and theatmospheric rotation Raman scattering cross section; obtaining a nitrogen dioxide differential absorption cross section according to the differential absorption spectrum, and obtaining the whole layer inclined column concentration of nitrogen dioxide by using the Ring effect differential pseudo-absorption cross section; subtracting the inclined column concentration of nitrogen dioxide from the top layer to the bottom layer from the whole layer inclined column concentration of nitrogen dioxide to obtain the lower inclined column concentration of nitrogen dioxide. By using the method, accurateand rapid calculation of the atmospheric lower nitrogen dioxide concentration is realized.

Description

technical field [0001] The invention relates to the field of satellite remote sensing inversion, in particular to a method for inversion of nitrogen dioxide concentration at the bottom of the atmosphere. Background technique [0002] Existing nitrogen dioxide (NO 2 ) concentration inversion method, including the use of chemical transport models for NO 2 The disadvantage of concentration inversion is that it is affected by time and space limitations and cannot be widely used; it also includes inversion of nitrogen dioxide concentration based on satellite sensor data, among which SBUV (Solar Backscatter Ultraviolet) and TOMS (Total Ozone Mapping Spectrometer) sensors, Due to the low spectral resolution, it is impossible to complete the detection of trace gases in the atmosphere; sensors such as SAGE (Stratospheric Aerosol and Gas Experiment) adopt the method of limb or occultation, and cannot realize the observation of the troposphere composition of the atmosphere; based on O...

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Application Information

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IPC IPC(8): G01N21/31G01N21/65
CPCG01N21/31G01N21/65
Inventor 顾坚斌范萌陈良富陶金花王子峰张莹余超
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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