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A Retrieval Method of Atmospheric Composition for Occultation Sounder

A detector and atmospheric technology, applied in instruments, analytical materials, measurement devices, etc., can solve the problems of large influence on inversion accuracy and large dependence on the initial value field of inversion results, and achieve the effect of solving non-convergence and accelerating convergence speed.

Active Publication Date: 2020-04-28
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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Problems solved by technology

In addition, in the current inversion algorithm, the inversion result is relatively dependent on the initial value field, so the calculation of the initial value field is very important, and the smoothing factor in the inversion algorithm also has a relatively large impact on the inversion accuracy

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  • A Retrieval Method of Atmospheric Composition for Occultation Sounder
  • A Retrieval Method of Atmospheric Composition for Occultation Sounder
  • A Retrieval Method of Atmospheric Composition for Occultation Sounder

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Embodiment Construction

[0037] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0038] figure 1 A schematic flow chart of an inversion method provided by an embodiment of the present invention;

[0039] Such as figure 1 As shown, the atmospheric composition inversion method of the occultation detector in the present invention comprises the following steps:

[0040] Step S11: Calculate the initial value field of the inversion algorithm, the initial value field includes the prior profile of the target atmospheric composition and the covariance matrix;

[0041] Step S12: Construct the occultation detector's occultation detection forward mode based on the forward radiation transfer model ARTS, and select the transmittance radiation transfer form in the forward mode;

[0042] Step S13: According to the distribution analysis of the absorption spectrum of the target atmospheric component, select the i...

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Abstract

The invention relates to an atmospheric composition inversion method of an obscuration detection instrument. On the basis of parameter characteristics of an occultation detection instrument, an ARTS-based occultation forward mode is established; an atmospheric background base is established based on ten-year MLS global atmospheric products; statistic calculation is carried out to obtain an initialvalue field of a target component; and layered constriction is carried out on iteration of different height layers during the inversion process.

Description

technical field [0001] The invention relates to a detection and inversion method for atmospheric components of an occultation detector, and the applicable atmospheric components include O 3 、H 2 O, CO, CO 2 , HCl, NO, N 2 O, NO 2 , HCl, HF and other trace gases. Background technique [0002] Ozone molecules (O 3 ) is the most critical component of the stratosphere atmosphere, it is the main heat source of the stratosphere, and the vertical distribution of ozone in the stratosphere plays a decisive role in the temperature structure and atmospheric movement of the stratosphere. Since the discovery of Antarctic ozone O in the 1980s 3 Since the formation of the layer void, various observation methods such as ground-based, aviation, and satellite have been used to detect and study its formation mechanism. In recent years, people have gradually realized that some trace components in the stratospheric atmosphere, such as chlorine, hydrogen-containing radicals, nitrogen oxide...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01S19/14G01N21/3504G01N21/59G01N21/17G06F17/16
Inventor 李小英王红梅王雅鹏邹铭敏朱松岩苗晶
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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