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Temperature and pressure profile and tangent height joint inversion method

A technology of joint inversion and profiling, applied in the field of occultation observation, to achieve a wide range of applications

Active Publication Date: 2017-12-22
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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  • Abstract
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  • Claims
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Problems solved by technology

However, the optimal estimation algorithm has not yet been used in the joint inversion of the temperature-pressure profile and cut-height of the occultation sensor.

Method used

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  • Temperature and pressure profile and tangent height joint inversion method
  • Temperature and pressure profile and tangent height joint inversion method
  • Temperature and pressure profile and tangent height joint inversion method

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Embodiment Construction

[0029] The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0030] figure 1 A schematic diagram of a joint inversion method of temperature-pressure profile and cut height provided by the embodiment of the present invention;

[0031] figure 2 A schematic diagram of a joint inversion process of temperature-pressure and cut-height provided by the embodiment of the present invention;

[0032] Such as figure 1 with figure 2 As shown, the specific steps of this inversion method are as follows:

[0033] Step S101: constructing a priori profile, a priori covariance matrix, and an observation covariance matrix;

[0034] Specifically, use the MLS v4.22 level product to construct the prior profile required in the optimal estimation algorithm in the present invention, the time span is 2005-2015, and do a latitude 5°, longitude 30° grid for the data monthly average. When used, the ...

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Abstract

The invention relates to a temperature and pressure profile and tangent height joint inversion method, which is characterized by establishing a prior profile, a prior covariance matrix and an observation covariance matrix; inputting geographic and geometric information observed by a satellite into a forward radiation transfer model SCIATRAN to obtain an analog value and a weight function of the temperature; by combining the analog value, the weight function of the temperature, the prior profile, the prior covariance matrix and the observation covariance matrix, and based on an optimal estimation algorithm, obtaining a temperature profile; based on the optimal estimation algorithm, realizing temperature profile inversion of an occultation sensor, and in the inversion iteration process, realizing synchronous inversion of pressure and tangent height through a hydrostatic equilibrium equation; and finally, through iteration, obtaining a temperature profile, a pressure profile and corrected tangent height.

Description

technical field [0001] The invention relates to the technical field of occultation observation, in particular to a joint inversion method of temperature-pressure profile and cut height based on an occultation sensor. Background technique [0002] Temperature and pressure profiles are necessary atmospheric parameters for trace gas inversion, and the accuracy of temperature and pressure parameters directly affects the inversion accuracy of other atmospheric components. The effective vertical height of occultation observation is 10-100km, and the meteorological data cannot provide enough effective data, so the atmospheric temperature and pressure profiles need to be retrieved from the observation data of the detector. Using CO for the IR channel 2 The temperature-pressure inversion of the absorption channel is a routine practice. [0003] For occultation observations, the observation pointing information of the sensor is crucial for inversion, which is related to the propagat...

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Application Information

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IPC IPC(8): G01S19/14G01W1/00
CPCG01S19/14G01W1/00
Inventor 李小英王雅鹏王红梅朱松岩苗晶
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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