摘要
以长江中游沿岸17个气象站点风场的数据为基础,统计分析了长江中游通航环境风场的气候变化特征.研究表明:除宜昌站外长江中游各站点年平均风速总体呈减小趋势,大部分站点2000年以后年平均风速有所上升;年平均风速在20世纪80年代左右发生突变;日最大风速5级以上的天数总体呈下降趋势;巴东站2000年以后日最大风速5级以上的年天数增多(25.3d/a),荆州站点在2004年以前呈下降趋势,2004年以后5级风天数明显上升.分析结果表明,长江中游风场的气候变化对航运是有利的.
Based on the yearly wind field data observed by the 17weather stations near the coast of mid-dle Yangtze river,the characteristics of the wind field＇s climate change of middle Yangtze river was an-alyzed.The results showed that the yearly averaged wind speed of all stations is reduced expect the Yichang station.The most stations are increasing since 2000.The yearly averaged wind is break in 80s.In general,the annually total days of maximum wind force over 5（on Beaufort scale）had the tend to decrease.The annually total days of maximum wind force over 5in Badong station had the tend to decrease before 2004,but increase obviously since 2004.The climate change of the wind has fa-vorable influence on navigation.
出处
《武汉理工大学学报（交通科学与工程版）》
2012年第2期403-406,410,共5页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国家自然科学基金青年科学基金项目(批准号:40805063/D0512)
武汉理工大学自主创新研究基金资助
关键词
长江中游
通航环境
风场
气候变化
middle Yangtze River
navigation environments
wind field
climate change
