Method for simulating light scattering property of ice crystal particle

An ice crystal particle and light scattering technology, applied in the field of atmospheric remote sensing, can solve the problems of insufficient inversion accuracy, ignoring bubbles and impurities, etc., and achieve the effect of improving inversion accuracy

Active Publication Date: 2019-11-15
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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[0004] The embodiment of the present application provides a method for simulating the light scattering characteristics of ice crystal particles,...

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  • Method for simulating light scattering property of ice crystal particle
  • Method for simulating light scattering property of ice crystal particle
  • Method for simulating light scattering property of ice crystal particle

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[0028] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with specific embodiments of the present application and corresponding drawings. Apparently, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0029] The technical solutions provided by various embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

[0030] figure 1 It is a flowchart of an embodiment of a method for simulating light scattering characteristics of ice crystal particles of different shapes.

[0031] A method for...

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Abstract

The invention discloses a method for simulating light scattering property of ice crystal particle. By the method, the problem that bubbles and impurity in the ice crystal particle in the prior art arenot considered to cause insufficient inversion accuracy. The method comprises the steps of building an ice crystal particle model; randomly adding a bubble and/or impurity model in the model, and adjusting conductivity and refractive index of the bubble and impurity model; calculating a scattering function and a scattering matrix by an approximate optical approximation method scattering program;calculating radiation values of an absorption channel and a non-absorption channel of a satellite sensor, cloud optical thickness and ice cloud particle effective radius by a RSTAR radiation transmission mode; building a lookup table according to the radiation values of the absorption channel and the non-absorption channel, the cloud optical thickness, the ice cloud particle effective radius and the ice cloud particle effective radius; and calculating the cloud optical thickness and cloud particle effective radius according to the radiation values observed by satellite and according to the lookup table. By the method, the inversion accuracy of the cloud particle effective particle and the cloud optical thickness is remarkably improved.

Description

technical field [0001] The present application relates to the field of atmospheric remote sensing, in particular to a method for simulating the light scattering characteristics of ice crystal particles. Background technique [0002] Ice clouds cover 30%-40% of the Earth's surface and are important observational factors for studying the atmospheric radiation budget and cloud-climate feedback. Climate model simulations and satellite remote sensing inversion techniques are very effective methods for elucidating the radiative and optical properties of ice clouds in the climate system. The first spacecraft-based International Satellite Cloud-Climatology Project's (ISCCP) Regional Experiment (FIRE) and the International Cirrus Cloud Experiment (ICE) have demonstrated that ice clouds are mainly composed of non-spherical ice crystals. They differ from warm water cloud droplets, which consist of spherical particles. The Lorentz-Mie theory explicitly describes the single scattering ...

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Application Information

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IPC IPC(8): G01N15/02G01N15/06G01B11/06G01N21/47
CPCG01B11/06G01N15/0205G01N15/06G01N21/47G01N2015/0693G01N2021/1793G01N2021/4733
Inventor 胡斯勒图伟乐斯尚华哲马润
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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