首页|期刊导航|大气和海洋科学快报(英文版)|Temperature oscillations observed in the stable boundary layer over four different underlying surfaces
大气和海洋科学快报(英文版)2017,Vol.10Issue(3):243-251,9.
Temperature oscillations observed in the stable boundary layer over four different underlying surfaces
Temperature oscillations observed in the stable boundary layer over four different underlying surfaces
摘要
Abstract
夜间边界层内的温度时空特征决定了边界层的稳定性.由于稳定边界层的间歇性和复杂性,模式在夜间的参数化方案还不完善,研究夜间边界层的温度变化有助于改进模式在夜间的表现.本文利用四座在不同下垫面上的气象塔的数据,研究了夜间边界层中的温度波动.研究表明,无论是海边、草原还是沙漠下垫面,夜间形成的稳定边界层中,振幅大约2摄氏度,周期在数分钟的温度波动非常频繁地出现.而在北京,由于城市下垫面较大的热容量和人为热源使得稳定边界层不容易形成,温度波动也较弱.用布朗特维萨拉频率代表的静力稳定度是影响温度脉动强弱的重要因子.关键词
夜间边界层/稳定边界层/温度脉动/湍流间歇性Key words
Nocturnal boundary layer/stable turbulence/temperature oscillation/intermittency引用本文复制引用
XIAO Qing-Yao,HU Fei,CHENG Xue-Ling..Temperature oscillations observed in the stable boundary layer over four different underlying surfaces[J].大气和海洋科学快报(英文版),2017,10(3):243-251,9.基金项目
This work was supported by the National Natural Science Foundation of China [grant number 11472272] ()
and the National Key R&D Plan [grant number 2016YFC0208802]. ()