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Tomography method of using limb sounding data for inverting atmospheric ozone profiles

An inversion and atmospheric technology, applied in the field of atmospheric chemical remote sensing, can solve the problem of low vertical resolution of ozone

Inactive Publication Date: 2011-01-05
JILIN UNIV
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Problems solved by technology

Existing inversion methods can only obtain total ozone information or profiles with very low vertical resolution

Method used

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  • Tomography method of using limb sounding data for inverting atmospheric ozone profiles
  • Tomography method of using limb sounding data for inverting atmospheric ozone profiles
  • Tomography method of using limb sounding data for inverting atmospheric ozone profiles

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Embodiment Construction

[0034]Below in conjunction with accompanying drawing and example do further detailed description:

[0035] The tomographic imaging method of using limb remote sensing data to invert the atmospheric ozone profile is to use tomography technology to invert the large gas emissivity from the limb infrared remote sensing data, and then combine the photochemical model to simulate the large gas emissivity, and then use Newton iteration Methods Inversion of atmospheric ozone profile.

[0036] Step 1: Reading and preprocessing of limb remote sensing orbit data

[0037] a) Read satellite orbit data

[0038] Read the satellite orbit radiance data, satellite geographic coordinates and observation time, and read the geographic coordinates, height, and angle data of the tangent point of the radiance corresponding to the observation line of sight.

[0039] b) Calculate the Cartesian coordinates of the ascending node of the satellite and the point of tangency

[0040] According to the read ...

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Abstract

The invention relates to a tomography method of using the limb sounding data for inverting atmospheric ozone profiles. The method comprises the following steps: respectively calculating the intersections between the gaze vector and the atmospheric grid radial and vertical boundary and atmospheric layer horizontal boundary, merging two types of intersections, then calculating the distance between adjacent intersections to obtain intercept; applying the tomography method in a correlate equation about volume emissivity and radiance, using the square iterative reconstruction technology to obtain the inverse iteration model of the volume emissivity, calculating the volume emissivity; and finally using an oxozone photochemical model to connect the volume emissivity with the ozone number density, and selecting the Newton iteration method to invert the ozone profiles.

Description

Technical field: [0001] The invention relates to atmospheric chemical remote sensing, in particular to a tomographic imaging method for inverting a two-dimensional profile of atmospheric ozone by using atmospheric limb remote sensing data in the oxygen infrared band through a tomographic inversion method combined with a photochemical model of the odd oxygen group. Background technique: [0002] Ozone is one of the most important greenhouse gases in the atmosphere. Ozone, which is mainly distributed in the stratosphere of the atmosphere, is a "protective umbrella" for life on earth from ultraviolet rays; however, excessive ozone content in the troposphere where human beings live is harmful or even toxic air pollution, which can damage human eyes, lungs, etc. , and affect crop yields. [0003] In 1929, the British Dobson began to observe and study atmospheric ozone, especially since 1979 when TOMS (Total Ozone Mapping Spectrometer) and SBUV (Solar Backscattered Ultraviolet) o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/17G01N21/47G06F19/00
Inventor 陈圣波汪自军杨莹孟治国路鹏
Owner JILIN UNIV
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