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标题：Land–sea breeze circulation structure on the west coast of the Yellow Sea, China
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作者：Yongxiang Ma ; Jinyuan Xin ; Xiaoling Zhang 等
期刊名称：Atmospheric and Oceanic Science Letters
印刷版ISSN：1674-2834
电子版ISSN：2376-6123
出版年度：2021
卷号：14
期号：1
页码：100003-100010
DOI：10.1016/j.aosl.2020.100003
出版社：Taylor and Francis Ltd
摘要：Land–sea breeze (LSB) is an atmospheric mesoscale circulation that occurs in the vicinity of the coast and is caused by uneven heating resulting from the difference in specific heat capacity between the sea and land surfaces. The circulation structure of LSB was quantitatively investigated with a Doppler wind lidar Windcube100s on the west coast of the Yellow Sea for the first time. The time of observation was 31 August to 28 September 2018. It was found that the height of LSB development was 700 m to 1300 m. The duration of conversion of LSB was between 6 h and 8 h. The biggest average horizontal sea-breeze wind speed at 425 m was 5.6 m s −1 , and at 375 m it was 4.5 m s −1 . During the conversion process from sea breeze to land breeze, the maximum wind shear exponent was 2.84 at 1300 m altitude. During the conversion process from land breeze to sea breeze, the maximum wind shear exponent was 1.28 at 700 m altitude. The differences in wind shear exponents between sea-breeze and land-breeze systems were between 0.2 and 3.6 at the same altitude. The maximum value of the wind shear exponent can reflect the height of LSB development. 摘要陆海风是由于海陆表面之间的比热容不同而导致的昼夜热量分布差异, 从而在海岸附近引发的大气中尺度循环系统.本文利用多普勒风激光雷达Windcube100s首次对黄海西海岸的海陆风的循环结构进行了观测研究.在2018年8月31日至9月28日观测期间发现, 海陆风发展高度一般在700 m至1300 m.海陆风转化持续的时间为6小时至8小时.在425m高度, 海风水平风速出现最大值, 平均为 5.6 m s −1 .陆风最大水平风速出现在370 m, 约为4.5 m s −1 .最大风切变指数在1300m处, 为2.84;在陆风向海风转换过程中, 最大风切变指数在700m处, 为1.28.在同一高度上, 风切变指数在海风盛行和陆风盛行时的差值范围为0.2–3.6, 风切变能反映出海陆风的发展高度.
关键词：Land–sea breeze ; Vertical wind speed ; CCirculation structure ; Doppler wind lidar ; Yellow sea ; 关键詞: ; 海陆风 ; 垂直风速 ; 循环结构 ; 多普勒风廓线激光雷达 ; 黄海