Method for detecting supercooled water clouds

A supercooled water and cloud detection technology, applied in the field of satellite remote sensing data cloud detection, can solve problems such as the inability to accurately identify the distribution range of supercooled water clouds, and achieve the effect of wide application and efficient calculation.

Active Publication Date: 2018-05-29
INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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Problems solved by technology

[0003] The invention provides a supercooled water cloud detection method, which solves the problem that the existing method

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  • Method for detecting supercooled water clouds
  • Method for detecting supercooled water clouds
  • Method for detecting supercooled water clouds

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[0019] 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.

[0020] At present, the detection methods of supercooled water clouds in the field of remote sensing mainly include: airborne particle measurement method; laser radar, millimeter wave radar method and cloud parameter threshold method, etc. Domestic research on supercooled water clouds generally adopts the airborne particle measurement method. The atmospheric partic...

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Abstract

The invention discloses a method for detecting supercooled water clouds. The problem is solved that existing methods cannot be used for accurately identifying the distribution range of the supercooledwater clouds in an ice-water mixed cloud phase state. The method includes the steps of downloading historical cloud parameter data and setting up historical sample data for an area to be studied; distinguishing historical supercooled water cloud regions and historical non-supercooled water cloud regions according to images, carrying out statistics on the occurrence frequency of various cloud phase states of the historical cloud parameter data, and determining a cloud phase state criterion, a cloud top temperature criterion and a cloud droplet effective radius criterion; obtaining current cloud parameter data for the area to be studied and setting up current sample data; according to the cloud phase state criterion, distinguishing supercooled water cloud regions in the cloud phase states and non-supercooled water cloud regions in the cloud phase states; according to the cloud top temperature criterion, distinguishing the supercooled water cloud regions with cloud top temperatures; according to the cloud droplet effective radius criterion, distinguishing the supercooled water cloud regions. According to the method, the rapid and stable detection of the supercooled water clouds is achieved, the calculation efficiency is high, and the application range is wide.

Description

technical field [0001] The invention relates to the technical field of satellite remote sensing data cloud detection, in particular to a supercooled water cloud detection method. Background technique [0002] Liquid water droplets with a temperature lower than 0°C in the cloud form a supercooled water cloud, which is the main area where artificial ice nuclei such as dry ice and silver iodide are sown in artificial precipitation technology. The impact of the supercooled water droplets on the aircraft surface will also cause aircraft icing hazards. At present, the detection methods of supercooled water clouds mainly include: airborne particle measurement method, laser radar, millimeter wave radar method and cloud parameter threshold method. The airborne particle measurement method will be limited by the aircraft icing disaster and the space-time range; lidar and millimeter-wave radar have a large attenuation, which is easy to underestimate the supercooled water content in the ...

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Application Information

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IPC IPC(8): G01W1/00G01N21/3577
CPCG01N21/3577G01W1/00
Inventor 胡斯勒图尚华哲王子明马润
Owner INST OF REMOTE SENSING & DIGITAL EARTH CHINESE ACADEMY OF SCI
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