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Medium-scale atmospheric photochemical pollution simulation prediction algorithm increasing meteorological model interface

A technology of photochemical pollution and prediction algorithm, applied in the field of atmospheric environmental pollutant detection, can solve problems such as limited application, difficulty in obtaining, and complicated steps of CALGRID mode

Pending Publication Date: 2018-05-08
NANJING UNIV
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  • Application Information

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Problems solved by technology

Therefore, the meta-model system structure is equivalent to running two meteorological models, and some parameters of the CALMET model itself, such as terrain, vegetation, stations, soundings, etc., are relatively difficult to obtain, so the original CALGRID model has complicated steps and limited application

Method used

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  • Medium-scale atmospheric photochemical pollution simulation prediction algorithm increasing meteorological model interface
  • Medium-scale atmospheric photochemical pollution simulation prediction algorithm increasing meteorological model interface
  • Medium-scale atmospheric photochemical pollution simulation prediction algorithm increasing meteorological model interface

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Experimental program
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Effect test

Embodiment 1

[0075] Embodiment 1: as Figure 1~4 As shown, the pollution under the control of the high-pressure system and the typhoon system, which has an important impact on the air quality in South China, is used as a typical case to carry out research. Table 2 shows some parameter settings of WRF and CALGRID for simulation.

[0076] Table 2 Study case description and model parameter settings

[0077]

[0078]

[0079] (1) Case 1: From March 28 to 31, 2000, photochemical pollution under the control of high-voltage systems

[0080]The photochemical pollution process that occurred in Hong Kong from March 28 to 31, 2000 was a typical combined pollution of local photochemical and regional transmission, which lasted for three days and affected the whole territory of Hong Kong (Wang et al., 2004) . Analysis of hourly concentration changes, diurnal concentration changes, meteorological conditions, local photochemical mechanism analysis and transport mechanism analysis based on synchro...

Embodiment 2

[0083] Example 2: On July 2-5, 2001, the photochemical pollution under the control of the typhoon system

[0084] Typhoon "Utor" is a tropical cyclone that had a major impact on Guangdong in 2001. Its development process is as follows: a tropical depression formed in the Northwest Pacific Ocean on July 1; it strengthened into a tropical storm on the 2nd; it strengthened into a typhoon on the afternoon of the 3rd and reached its maximum intensity in the evening; The belt caused serious damage in the Philippines and Taiwan, China; entered the South China Sea in the early morning of the 5th, and its moving speed slowed down to 20 kilometers per hour when it approached the coast of Guangdong; at around 8:00 am on the 6th, it landed near Shanwei and weakened into a severe tropical storm After landing, Ute turned westward and moved across Guangdong Province; it gradually weakened into a tropical depression on the 7th; on the morning of the 8th, Ute dissipated after entering Guangxi ...

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Abstract

The invention discloses a medium-scale atmospheric photochemical pollution simulation prediction algorithm increasing a meteorological model interface. A meteorological model interface module is addedbased on a CALGRID chemical model, MM5 and WRF level Arakawa B and C grid point meteorological data are interpolated into an Arakawa A grid point of a CALGRID, meteorological data of MM5 and WRF vertical sigma terrain following coordinate systems are interpolated into a Z terrain following coordinate system of the CALGRID, characteristic parameters of an underlying surface are acquired from an external data set according to the type of the underlying surface outputted by a meteorological model, and boundary layer meteorological parameters such as PGT (page table) stability classification, friction velocity, convection rate scale and Monin-Obukhov length needed by the CALGRID model are acquired by prediction field diagnosis in the meteorological model. The CALGRID model is successfully connected with MM5, WRF and TAPM output meteorological fields.

Description

technical field [0001] The invention belongs to the technical field of atmospheric environmental pollutant detection, and in particular relates to an improved prediction model of mesoscale atmospheric photochemical pollution. Background technique [0002] The air quality model is based on the understanding of a series of physical and chemical processes such as transmission, diffusion, transformation and removal of pollutants discharged into the atmosphere, using research methods and computer technologies in meteorology, environment, physics, chemistry and other disciplines. The method of simulating and forecasting the distribution and trend of air pollutant concentration on different spatial scales has important practical application value in air quality forecasting, air pollution control, environmental planning and management, urban construction and public health, and has Broad development prospects. [0003] At present, Euler-type mesoscale atmospheric photochemical model...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 谢旻王体健
Owner NANJING UNIV
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