SCIENTIA SINICA Terrae, Volume 51 , Issue 11 : 1964-1977(2021) https://doi.org/10.1360/SSTe-2020-0364


沙杰 1, 邹钧 1,2,3, 孙鉴泞 1,2,3,*
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  • ReceivedDec 25, 2020
  • AcceptedMay 7, 2021
  • PublishedJun 17, 2021


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  • 图 1


    红色、蓝色和黄色标记分别代表DX站、XL站和SZ站位置, 引自Google Earth

  • 图 2


    (a) XL站附近地表状况航拍图, 粉色框内区域为南京大学仙林校区, 引自Google Earth; (b) XL站附近半径800m范围内地形高度和建筑高度示意图, 色标标注的高度以校区内道路和平地的平均海拔高度为参考高度; (c) DX站附近地表状况航拍图, 引自Google Earth; (d) DX站附近半径800m范围内建筑高度示意图(内圈半径为500m), 深蓝色表示建筑物高度低于观测塔所在建筑物的高度, 浅蓝色表示建筑物高度低于下面一层通量观测的高度但高于观测塔所在建筑物的高度, 浅红色表示建筑物高度介于两层通量观测高度之间, 深红色表示建筑物高度高于上面一层通量观测的高度, 图中虚线和实线标明的角度分别是用于分析的观测数据所对应的风向范围的起始风向和终止风向; (e) SZ站附近地表状况航拍图, 引自Google Earth; (f) SZ站附近半径800m范围内建筑高度示意图, 图中色标标注规则及虚实线含义与(d)中相同

  • 图 3


    图中标注高度为距离观测塔所在建筑物楼顶的高度, 阴影区表示两个高度上的湍流通量平均值差值的显著性通过了95%置信水平的t检验

  • 图 4


  • 图 5



  • 图 6


    左图为塔上50m处通量与25m处通量的比值, 右图为塔上25m处通量与地面2.6m 处通量的比值

  • 图 7


    左图为塔上25m与地面2.6m湍流通量比值的情况, 右图为塔上50m与25m湍流通量比值的情况. 红线为中位数位置, 粉红阴影区代表中间50%数据的分布范围

  • 图 8


  • 图 9


  • 图 10


  • 表 1   三个站点周围以观测站铁塔为中心半径800m范围内下垫面状况及环境参数a)









    北片: 裸地和山体为主

    南片: 城市下垫面特征



















    括号内数据为选取风向范围(DX站的风向角度范围是300°→120°, SZ站风向角度范围是150°→330°)内的平均建筑物高度(选取理由见下一小节)


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