The function o f weather trend element and physical variable field are discussed respectively.

So,the study on synoptic pattern resulting in PM10 heavy air pollution is very important for the forecast and project of PM10 heavy air pollution and the control and managemen.

The synoptic patterns and physical quantities for the two kinds of processes were compared.

The heavy fogs of Shangqiu are formed by the weather situations: continental anticyclone,warm zone in front of cold front,uniform pressure field,and low pressure with an inverted trough.

It is considered that south higher and north lower type,and east higher and west lower type is the most typical and the most common weather situation of the strong SW wind in the spring along the Yan Wei coast.

In the light of the process of snowstorm weather in Changzhi City on February 7,2007,this paper makes a diagnostic analysis from the aspects of 500hpa high-weather situation,ground pressure field,fy-2c upper-middle troposphere air humidity field,evolution of satellite cloud picture and the divergence of physical field,and gives the focus on the forecasting of similar snowstorm weather.

Hereafter as a result of not obvious synoptic situation influence,the low al.

The synoptic situations from lower-level to upper-level prior to and during the high-temperature event are analyzed.

Heavy rain event on August 26 2003 in Changzhi is analyzed based on synoptic situation, physical quantity field and local total temperature.

Forecast of 9914 typhoon motion by analysis of cloud image and weather conditions;

Based on four representative examples,an analysis is made of the surface and weather conditions for lightning-caused forest fires.

The favorable weather conditions for precipitation enhancement operation during summer drought periods are further analyzed.

The climatic conditions and weather patterns of seven typical sandstorms from 2000 to 2003 over Heilongjiang Province, as well as the resulting air pollution, especially particle pollutants, were analyzed.