| 摘要: |
| 该文利用2014年12月—2019年2月共5a冬季地面观测资料，寻找滇黔准静止锋在黔西南冬季出现的规律，并对准静止锋锋后黔西南天气要素进行了分析，得出如下结论：①2014—2018年冬季滇黔准静止锋在黔西南累计出现187 d，占冬季总天数的41.6%，其中1月最多（17.6 d），12月次之，2月最少；Ⅰ型静止锋出现最多（16.4 d），Ⅱ型次之，3类静止锋均在1月出现最多；近5 a冬季3类静止锋均是中等强度出现最多，强静止锋次之，其中强静止锋及中等强度静止锋均在1月出现最多。②Ⅰ型静止锋背景下黔西南高、低温分别比冬季平均低4.2 ℃、2 ℃；Ⅰ型静止锋背景下雨日的发生概率为66%，明显高于冬季平均的39%；相对湿度88%，比冬季平均81%明显偏高；日照与冬季平均相比明显减少，仅兴义和望谟有0.1 h；平均风2.1 m/s，比冬季平均偏大0.3 m/s，但最大风却比冬季平均偏小0.2 m/s。 |
| 关键词: 滇黔准静止锋；黔西南；分布规律；要素特征 |
| DOI： |
| 投稿时间：2020-11-22 |
| 基金项目:黔西南州科技局项目（2019-1-06）：云贵准静止锋对黔西南冬春气温的影响；国家自然科学基金（41865005）：贵州凝冻灾害事件特征和成因及其预报预测研究 |
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| Characteristics of Winter Elements in Southwest Guizhou under the Background of Quasi-stationary Front in Yunnan and Guizhou |
| WANG Fen,TANG Haopeng,YANG Chunyan,FAN Qian,LI Yang,LIU Xiang |
| (Qianxinan Meteorological Bureau of Guizhou Province,Xingyi 562400 ,China) |
| Abstract: |
| Based on the surface observation data of five years from December 2014 to February 2019, this paper seeked the regularity of the occurrence of the quasi-stationary front in the southwest of Guizhou, and analyzed the weather elements in the southwest of Guizhou after the quasi-stationary front，the results are as follows：① The quasi-stationary front of Yunnan and Guizhou last for 187 days in southwest Guizhou, accounting for 41.6% of the total winter days, with the highest in January (17.6 days) , and the lowest in December；Type I stationary front (16.4 days) is the commonest one and type II the second. Three types of stationary fronts all occur the most frequently in January；the medium intensity stationary front are the most in the winter , the strong stationary fronts are the second, and the strong stationary fronts and the medium intensity stationary fronts are all the most in January. ② The highest and lowest temperatures in the southwest of Guizhou are lower 4.2 ℃ and 2 ℃ lower than the winter average under the type I ; the probability of rainy day in the background of type I stationary front was 66% , significantly higher than the average of 39% in winter；the relative humidity was 88% , higher than the winter average of 81% ; the sunshine was reduced less obviously compared with the winter average; the mean wind was 2.1 m/s, higher than the winter average of 0.3 m/s. However, the maximum wind is 0.2 m / s , smaller than the winter average. |
| Key words: Quasi-stationary Front of Yunnan and Guizhou；southwest of Guizhou；distribution law；element characteristics |
