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Comprehensive precipitation phenomenon identification method and device based on multi-source observation data

An identification method and data technology, applied in the field of atmospheric science research, can solve the problems of high misidentification rate, achieve high resolution and accuracy, and improve the effect of identification accuracy

Active Publication Date: 2021-07-30
南京气象科技创新研究院 +2
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Problems solved by technology

[0004] In order to solve the problem of high misidentification rate in existing raindrop spectrometer observation products, this application provides a comprehensive identification algorithm and device for precipitation phenomena based on multi-source observation data to obtain precipitation with high reliability and accuracy Phenomenon automatic identification products

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  • Comprehensive precipitation phenomenon identification method and device based on multi-source observation data
  • Comprehensive precipitation phenomenon identification method and device based on multi-source observation data
  • Comprehensive precipitation phenomenon identification method and device based on multi-source observation data

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Embodiment Construction

[0032] The following will be combined with Figure 1-4 The present application will be described in detail with specific embodiments.

[0033] refer to figure 1 , this embodiment discloses a method for comprehensively identifying precipitation phenomena based on multi-source observation data such as raindrop spectrometers, comprising the following steps:

[0034] Step S01, extracting the 32-level particle size-falling speed observation data in real-time observation by the PARSIVEL raindrop spectrometer, and obtaining the potential number of observed particles in the 32*32-level particle size and falling speed space, marked as N i,j , where i corresponds to 32 particle sizes in the range of 0.0625-24.5mm, j corresponds to 32 falling speeds in the range of 0.05-20.8m / s, remove the data of the first two particle sizes (0.0625 and 0.1725mm) with higher errors, and obtain the quality The observed number of precipitation particles in the 30*32 file size-falling speed interval afte...

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Abstract

The invention discloses a rainfall weather phenomenon comprehensive identification method based on multi-source observation data. The method comprises the following steps of firstly, extracting minute rainfall particle spectrum distribution (particle size and number concentration) and falling speed information detected by a raindrop spectrometer, and carrying out quality control to obtain rainfall particle spectrum distribution and falling speed after quality control; and then based on the particle spectrum distribution and falling speed information observed by a raindrop spectrometer and the environment temperature information at a meteorological station position, introducing a fuzzy logic identification method to identify different types of rainfall weather phenomena; and finally, for the identified rainfall type, further according to intensity and continuous changes, subdividing specific rainfall sub-types, and realizing more refined weather phenomenon identification. The method is based on a multi-source observation means and a fuzzy logic algorithm, can solve a problem that a current raindrop spectrometer is too high in weather phenomenon false recognition rate, and achieves accurate recognition of a rainfall phenomenon.

Description

technical field [0001] This application relates to the field of atmospheric science research, in particular to a method and device for comprehensively identifying precipitation weather phenomena based on multi-source observation data. Background technique [0002] Atmospheric precipitation phenomenon refers to the general term for hydrometeors falling from the atmosphere to the ground, including many common weather processes such as rainfall, snowfall and hail. Accurately recording precipitation phenomena at observation stations has been the basic work of meteorologists for thousands of years. The historical records of these precipitation phenomena are not only conducive to evaluating weather forecast results and revealing local climate changes, but also have important reference value for understanding local cultural and historical changes. In recent years, with the increasing density of meteorological observation stations in my country, the comprehensive automatic observat...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01W1/10G01W1/14
CPCG01W1/10G01W1/14Y02A90/10
Inventor 陈刚郑媛媛孙康远徐芬赵坤
Owner 南京气象科技创新研究院
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