乌鲁木齐冬季清雪预报服务研究

以乌鲁木齐冬季清雪工作需求为牵引,利用乌鲁木齐2006—2016年冬季(当年11月—翌年3月)逐日降雪量、积雪深度、气温和173 d降雪日的逐时降雪量资料,分析了近11年冬季各量级降雪的分布特征、降雪持续时间和降雪的日变化特征;对积雪深度和对应降雪量做线性拟合,得出二者比值大体为0.968 cm/mm。得出清雪预报服务的重点是:小雪的有无、降雪起止时间和累积降雪量、积雪深度的预报,难点是中雪、大雪特别是暴雪和对应的积雪深度的精细化预报。

The Study of Snowfall Feature and Index of Clearing Snow Weather Forcast in Urumqi

To clear snow in Urumqi work requirements for traction, using the data of daily snowfall, snow depth and temperature between 2006-2016 winter (Novmber to next March), analysed every grade snowfall distribution feature and snowfall lasting time in recently eleven winters in Urumqi; Using hourly snowfall data of 173d snowfall days, analysed snowfall daily change rule .Analysed the relationship of snowfall and snow depth by the linear fit function of least absolute deviation method, the general ratio is 0.968cm/mm. By SMS, E-mail and the public WeChat ID, real-time push the content of series refine clearing snow forcast including snowfall starting and ending time, tatol snowfall, snow depth, temperature,wind direct wind speed and so.