基于BJ-RUC模式預(yù)報產(chǎn)品的北京冬半年道面溫度預(yù)報模型
[Abstract]:The meteorological elements from the 3 km resolution BJ-RUC mode from November 1, 2012 to March 30, 2013 and the temperature of 5 road surface stations (A1027, A1325, A1412, A1414, A1512) are statistically analyzed, and three stepwise regression models are set up respectively for the prediction of the future 24 h hourly road surface temperature according to the different reporting times (08,14 and 05), and the optimal model is selected. The road surface temperature from November 2013 to March 2014 is reported. The results show that the temperature of the channel surface is closely related to the 2 m temperature of the RUC output, the short wave radiation is significantly related, and the humidity is related to the long wave radiation, and the regression model predicted by the regression model with significant meteorological factors is better than the regression model that only joins the surface temperature of the previous day at the corresponding time, and the prediction accuracy can be raised. It is more than 25%, and the error is reduced by 1 degrees centigrade. The model prediction error can be controlled within + 3 centigrade, and the early peak temperature is better than the late peak, the day is better than the night, and the sunny day is better than other weather types.
【作者單位】: 北京市氣象服務(wù)中心;
【基金】:北京市科技計劃項目(Z151100002115040) 北京市自然科學(xué)基金項目(8174083)共同資助
【分類號】:P457.3;U418.41;U492.8
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