大雾消散时间的客观化预报（Objective prediction of fog dispersion time）.docVIP

大雾消散时间的客观化预报（Objective prediction of fog dispersion time） The development of highway traffic promotes economic development and facilitates people Life plays an important role, but fog brings a lot to highway traffic Inconvenience. The traffic control department is very close to the time of the fog The objective is to predict accurately the fog generation and dissipation time Basis for dispatching. In this paper, the meteorological observation data are used to select A linear regression forecasting equation for fog dissipation time is established. Taking into account the numerical prediction products (lattice data) there is a certain error In the forecast, the numerical data of the previous stage is first predicted The interpolated data is converted to the site by interpolation and correction of live data Data, and then the converted data is used as predictor and substitute side Prediction of fog dispersion time. The forecast took into account the Shijiazhuang days The phases of gas characteristics are established for 10~11 and 12~1 months, respectively Prediction equation. In addition, by analyzing the observation data of automatic weather stations, The change of the temperature now has a good indication of the dissipation time of the fog Therefore, according to the real-time temperature data provided by the automatic station, the fog is taken into account Prediction of dissipation time. 1 Characteristics and formation conditions of fog in Shijiazhuang In the sky, cloudless night or morning breeze or wind, ground The utility model has the advantages of strong radiation, rapid heat dissipation and obvious cooling of the near ground gas layer Conducive to condensation of water vapor. When low altitude has radiation inversion, it is beneficial A large number of droplets in the surface layer are deposited under the inversion layer to form a radiation fog. The formation of fog mainly depends on four conditions. [1]: (1) cooling condition: fine The influence of air radiat