论文部分内容阅读
应用地表热量平衡方程,考虑太阳短波辐射、大气和地面的长波辐射、潜热、感热传输等能量之间的平衡,并考虑水汽、气溶胶、浮尘以及云等对太阳短波辐射的吸收和散射,建立了一种较实用的道面温度预报模型。对北京市回龙观站和大羊坊北桥站2011年夏季及冬季对道面温度和自动气象站的常规气象要素观测进行模拟分析,并与该时段内所测到的道面温度进行对比。结果表明:两站道面温度的预测值与实测值的相关系数均在0.90左右,雨雪天时相关系数较小。这表明该模型具有一定的预报水平,且对夏季和冬季不同天气条件下道面温度预报结果均较好,可以运用于高速公路路面状况的实际预报中。
The surface heat balance equation is used to consider the balance between solar shortwave radiation, longwave radiation, latent heat and sensible heat transfer between the atmosphere and the ground, and the absorption and scattering of solar shortwave radiation by water vapor, aerosol, dust and cloud, A more practical pavement temperature prediction model is established. This paper simulates and analyzes the routine meteorological elements of Beijing Huilongguan Station and North Bridge Station in Dayunfang in summer and winter 2011 and compares them with the measured pavement temperatures in this period. The results show that the correlation coefficients between predicted and measured values of pavement temperature at two stations are both about 0.90, and the correlation coefficient is relatively small during rainy and snowy days. This shows that the model has a certain level of forecasting, and it has good forecasting results for pavement temperature under different weather conditions in summer and winter, which can be applied to the actual forecast of expressway pavement condition.