Method for obtaining near ground layer sand dust particle quantity deep time-space distribution

Abstract

A method for obtaining the temporal and spatial distribution of the mass concentration of sand and dust particles in the near-surface layer, the method steps are as follows: 1) firstly select the location of each meteorological station to observe and obtain the meteorological visibility under the sand and dust weather conditions at the same time under the sand and dust weather conditions 2) Statistical meteorological visibility data from the observation data, according to the analysis and calculation of the relationship between visibility and dust particle concentration, the visibility observed by each meteorological station is converted into the mass concentration of sand and dust particles; 3) The mass concentration of sand and dust particles is Ordinate, visibility as abscissa, establish mass concentration-visibility relationship diagram, fit mass concentration-visibility relationship curve; 4) obtain mass concentration spatiotemporal distribution diagram according to mass concentration-visibility relationship curve. The invention solves the problem that the time-space distribution of particle concentration under the condition of dust weather cannot be observed so far in my country, and provides an effective observation method for the research of sandstorm forecast and early warning and sand prevention and control in my country.

Description

technical field [0001] The invention belongs to the field of atmospheric environment monitoring, and in particular relates to a method for obtaining the time-space distribution of the mass concentration of dust particles in the near-surface layer. Background technique [0002] The China Meteorological Administration has a conventional meteorological observation network in my country. The observation network has 681 basic meteorological stations in my country, covering all regions of China. These meteorological observation stations transmit observation data such as temperature, humidity, pressure and other meteorological elements and weather phenomena to the China Meteorological Administration every three hours. These data have been used for weather forecasting and qualitative monitoring of sand and dust weather. But so far, there is no quantitative monitoring of the spatial distribution of dust particle concentration. [0003] Knowing the source of sand and dust particles...

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Problems solved by technology

At present, the instruments for observing the concentration of sand and dust particles mainly include measuring instruments TSP and PM10, etc. Taking the main instrument PM10 in the current atmospheric environment monitoring as an example, it can measure the mass concentration of particulate matter in the atmosphere with a particle size of less than 10 microns, but due to the Due to the limitation of the number, it is difficult to give the spatial distribution of dust particle concentration

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