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Test method of influence mechanism of city underlying surface aerosol to thunder and lightning process

A test method and aerosol technology, applied in the field of meteorology, can solve problems such as the impact of lightning activities

Inactive Publication Date: 2016-12-14
CHENGDU UNIV OF INFORMATION TECH
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Problems solved by technology

[0004] The purpose of the present invention is to provide a test method for the influence mechanism of urban aerosol on the lightning process, aiming at solving the physical mechanism problem of the impact of urban aerosol on lightning activities in strong convective weather

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  • Test method of influence mechanism of city underlying surface aerosol to thunder and lightning process

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Embodiment 1

[0038] 1. Adopted technical solutions and feasibility analysis

[0039] 1.1 Technical solutions to be adopted

[0040] Firstly, the observation data will be comprehensively analyzed, secondly, the corresponding theoretical conceptual model will be established on the basis of the observation, and then the numerical model will be used to simulate the conceptual model proposed in the observation, finally, the impact of the aerosol on the urban underlying surface on the lightning activity will be revealed. mechanism.

[0041] 1.1.1 Analysis of historical data

[0042] First, the data of ground-to-ground lightning during strong convective weather in Chengdu, the core city of Sichuan Basin, and its surrounding areas from 2006 to 2015 were analyzed;

[0043] Secondly, from 2006 to 2015, the PM in the near-surface atmosphere of Chengdu City and its surrounding areas in the Sichuan Basin 2.5 with PM 10 The concentration of particulate matter is analyzed;

[0044] Finally, the rela...

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Abstract

The present invention discloses a test method of an influence mechanism of the city underlying surface aerosol to a thunder and lightning process. The method comprises the steps of utilizing the weather and cloud radars to monitor the severe convection weather, observing the particulate matter distribution characteristic by an atmosphere particulate matter particle size spectrometer and a laser radar, at the same time, utilizing a thunder and lightning positioning system to observe a thunder and lightning process during a weather process; establishing a concept model of the interaction of the aerosol-cloud condensation nuclei and the ice nucleus-thunder and lightning process by the relationship between the city and upstream and downstream area aerosol distribution and the thunder and lightning activity characteristic parameters; utilizing an improved three dimensional convective cloud catalysis electric coupling mode to carry out the numerical value simulation on the mechanism that the aerosol in a city underlying surface severe convection weather influences the thunder and lightning process. According to the present invention, by improving the three dimensional convective cloud catalysis electric coupling mode, and carrying out the numerical value simulation on the established concept model, the influence mechanism of the city underlying surface aerosol to the thunder and lightning activity is disclosed.

Description

technical field [0001] The invention belongs to the technical field of meteorology, and in particular relates to a test method for the influence mechanism of the aerosol on the underlying surface of the city on the lightning process. Background technique [0002] In recent years, the urbanization process of the Sichuan Basin has been accelerated, and this area has become one of the areas with high aerosol concentration and frequent lightning activities in my country. Affected by factors such as aerosols on the underlying surface of the city, the characteristics of lightning activities in urban areas are obviously different from those in adjacent non-urban areas. At present, the academic community has not yet formed a unified view on the impact mechanism of urban aerosols on the lightning process. Compared with its adjacent non-urban areas, the concentration of aerosols will be significantly higher. Studies by Rosenfeld et al. (2008) and Feng Caiyun (2011) also show that aero...

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Application Information

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IPC IPC(8): G01W1/00
CPCG01W1/00
Inventor 周筠珺赵鹏国
Owner CHENGDU UNIV OF INFORMATION TECH
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