1985~2011年温泉大风特征分析

Analysis of Wind Characteristics of Hot Spring from 1985 to 2011

摘要: 本文对1985~2011年27年中652次大风进行了归纳分析。结果表明：1985~1997年大风日数总趋势是正常略偏多，从最大值走向最小值；1998~2011年总趋势是正常略偏少，但波动较大。2005年~1993年大风天气明显减少，1994年之后波动较大。大风天气多集中在4~8月，最多的季节是夏季，占全年的48%，夏季以7月最多，其次是春季、秋季，冬季最少；1985年大风出现46天，1997年仅有7天。大风最多风向是W，基本没有季节性差异。温泉春季大风多为寒潮大风，地面高压比较强盛，关键区内等压线密集。温泉夏季热对流旺盛，阵性大风多，时间短、范围小，没有明显地面场形势。

Abstract: This paper summarized and analyzed 652 strong winds in 27 years from 1985 to 2011. The results show that from 1985 to 1997, the total trend of the number of windy days is normal, from the maximum to the minimum. From 1998 to 2011, the general trend was slightly less than normal, but fluctuated greatly. From 1985 to 1993, the gale weather decreased obviously and fluctuated greatly after 1994. Windy weather is mainly from April to August. The most frequent season is summer, accounting for 48% of the whole year. The most frequent season is July, followed by spring, autumn and winter. There were 46 days of high winds in 1985 and only seven days in 1997. The maximum wind direction is W, and there is no seasonal difference. Spring hot spring wind is mostly cold wave wind, the ground high pressure is strong, and the isobaric line in the key area is dense. In summer, hot springs have strong convection, strong gusts, short time and small range, and no obvious ground situation.