The Density Of PM₁₀ Responsing Of Meteorological Elements Field Of Atmospheric Border Layers In Jinan

PM10 as the most important pollutant of majority of cities in our country hasaroused various aspects interest. In the situation of the source of pollution change isnot big,the PM10 density has the obvious time variation actually.The reason mainly isthe time variation of the meteorology condition in atmospheric boundary layer.This article take PM10 density monitor value of Jinan from June, 2001 to May,2003 as well as the same time day after day the meteorological element observedvalue as a foundation, analyzes the response of PM10 density to the boundary layermeteorological element field.The main conclusion of this text is as follows:(1)This article uses the mathematical statistic method to infer the scope ofvarious meteorological element value when highly concentrated pollution weatherappear easily and The result is as follows:In spring when barometric pressure>990hpa;Daily average temperature between0.1 and 10℃;Sunshine hour between 5 and 10;Total cloud cover≤5;Relativehumidity≤50%;Wind speed between 2.1and 4 m/s or Wind speed>5m/s appear, thepollution weather appear easily.In summer when barometric pressure between 980 and 990hpa;Daily averagetemperature between 20 and 30℃;Sunshine hour>5h or 0;Total cloud coverbetween 3.1 and 8;Relative humidity≤50%;Wind speed between 2.1 and 4 m/sappear, the pollution weather appear easily.In Autumn when barometric pressure between 990 and 1010hpa;Daily averagetemperature between 0.1 and 10℃;Sunshine hour≤5h;Wind speed ≤1m/s appear, thepollution weather appear easily.In winter when barometric pressure between 990 and 1000hpa;Sunshinehour≤10h;Total cloud cover ≤3;Relative humidity>50%;Wind speed≤2m/s appear,the pollution weather appear easily.Uses the statistical analysis method to study the correlation coefficient inspectionof each meteorological element and PM10 density, obtains the conclusion by methodas follows: The different season and the PM10 density significance correlationmeteorological factor is different, in spring mainly have the relative humidity and theprecipitation;in Summer mainly have the temperature and the relative humidity;Inautumn mainly have the temperature, the wind speed, the worst visibility and thesunshine hour;In winter mainly have the barometric pressure, the wind speed, therelative humidity, the worst visibility and the sunshine hour.This article induces to three big kinds of the synoptic situation in which it appearpollution easily: The high pressure class, the low pressure class, presses the kind.Divides into specifically in this foundation: High-pressured base, cold front front part,high-pressured edge, Mongolian low pressure front part, but actually trough, holdingthe attention of the audience and so on six kind of types.