新疆和田地区春季气流和沙尘传输路径的时空特征  

The spatial-temporal characteristics of airflow trajectories and dust transport route during the spring in Hotian,Xinjiang

作　　者：刘尊驰 刘彤[1] 韩志全[2] 孙钦明[1] 朱乐奎 

机构地区：[1]石河子大学生命科学学院,石河子832000 [2]石河子大学理学院,石河子832000

出　　处：《干旱区资源与环境》2016年第12期129-134,共6页Journal of Arid Land Resources and Environment

基　　金：国家"十二五"科技支撑计划(2014BAC14B02)资助

摘　　要：文中基于HYSPLIT模式,对和田2010-2014年春季3-5月近地面和1500m气流的3天后向轨迹进行聚类算法,定量分析气流的传输路径,及近地面各路径沙尘天气的发生比例。2010-2014年和田春季两个高度气流轨迹相差较大,但传输路径相同,有五类传输路径:西南、西部、西北、北部和东北。各月近地面气流传输路径相差较大,而各路径均有沙尘天气发生。3-5月东北路径沙尘发生比例最高,分别为67.6%、44%和48%;西南和西部路径只发生在3-4月,分别为西部(10%)、西南(17.4%)和西部(6.2%)、西南(6.8%);北部路径发生在4月和5月,为13%和12.8%。文中定量印证了和田地区春季气流和沙尘传输路径的时空特征,为研究沙尘天气来源等提供参考。Based on the Hybrid Single-Particle Lagrangian Integrated Trajectory model（ HYSPLIT）,3-day kinematic back trajectories in spring（ March to May） during 2010 to 2014 that arriving at ground and 1500 m at Hotan were simulated; a cluster algorithm was implemented to analyze the airflow transport route and the proportion of different ground routes. The airflow trajectories had large difference between two altitudes,but the transport routes were the same. There were five kinds of airflow transport routes： southwest,west,northwest,north and northeast. The ground airflow transport routes had large difference between the months,but each ground airflow transport route caused dust weather,and the proportion corresponded to airflow proportion. The northeast route led to high dust weather,which occupied 67. 6%,44% and 48% separately in March to May; the southwest and west route only happened in March and April,the percentages were10%（ west）,17. 4%（ southwest）and 6. 2%（ west）,6. 8%（ southwest）; the north route appeared only in April and May,were 13% and 12.8%,respectively. The result of quantitative analysis can provide important reference to the source of dust weather.

关 键 词：HYSPLIT 沙尘天气 传输路径 气流轨迹 聚类分析 

分 类 号：P422.55[天文地球—大气科学及气象学]