论文部分内容阅读
进入2005年12月份,来自西伯利亚地区的较强冷空气席卷了大半个中国。受这次冷空气的影响,地处山东胶东半岛的烟台和威海地区一直降雪不断,出现了罕见的暴雪天气。从12月3日起至22日,烟台和威海两市已遭遇3次强降雪过程。据当地气象部门提供的情况显示,至17日夜,烟台市中心城区降雪达74.2毫米,创1951年有气象记录以来的同期最大降雪量记录;威海市的降雪量更多达105.6毫米,连续的大雪、暴雪使地面积雪足有三尺厚。为此,两市不断向市民发布雪灾、道路结冰和大风预警信号。2005年胶东半岛缘何暴雪连连呢?首先,是来自西北方向的强冷空气持续影响。每年冬季影响山东省的冷空气主要有3条路径:一是偏西路径,这条路径的冷空气一般不会太强,但会给全省带来不同程度的降水或降雪;二是西北路径,这条路径的冷空气一般较强,往往给半岛地区带来冷流性降雪,三是偏北路径。2005年12月以来的几次冷空
Into December 2005, more cold air from Siberia swept over half of China. Affected by the cold air, Shandong is located in Shandong Peninsula and Yantai and Weihai has been continuously snowing, there has been a rare storm of snow. From December 3 to 22, Yantai and Weihai cities have suffered three heavy snowfalls. According to the statistics provided by the local meteorological department, the snowfall in the downtown area of Yantai reached 74.2 millimeters by the night of the 17th, a record of the largest amount of snowfall since meteorological records in 1951. The snowfall in Weihai even reached 105.6 millimeters with a continuous heavy snowfall Blizzard made the ground snow foot three feet thick. To this end, the two cities continue to release snowstorms, road icy and windy warning signals to the public. In 2005, why the heavy snow in the Jiaodong Peninsula again and again? First of all, the strong cold air from the northwest continued to affect. There are mainly three routes of cold air affecting Shandong Province each winter: one is the westward route, and the cold air in this route is generally not too strong, but will bring different degrees of precipitation or snowfall to the whole province; second, the northwest route , The cold air of this route is generally strong, which often brings cold-flow snowfall to the peninsula area and the third is the northerly route. Several cold and empty since December 2005