Anisotropic modeling of CO2 turbulent flux in a stably stratified atmospheric boundary layerOA
Anisotropic modeling of CO2 turbulent flux in a stably stratified atmospheric boundary layer
稳定热分层引发的各向异性湍流,使高阶闭合方案中的浮力项系数具有可变性,增加了CO2通量估算的难度.本文提出了一种估算CO2通量的各向异性方法,该方法通过分解湍流为各向同性部分和各向异性偏离部分,将浮力通量表示成各向异性指数的函数形式.本研究利用325米观测塔2014-2017年的数据确定模型参数,并用2018-2019年的数据验证了模型的有效性.结果显示,在80 m,140 m,200 m和280 m高度上,各向异性方法的平均绝对误差分别为6.50,5.57,2.83和2.94 μmol m-2 s-1.与常用的常数系数浮力项模型相比,该方法的误差更低.
Kang Zhang;Yan Zhang;Lei Liu;Yu Shi;Xueling Cheng;Fei Hu
State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China||College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,China||State Key Laboratory of Atmospheric Environment and Extreme Meteorology,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China||College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China||College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China||College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,China||State Key Laboratory of Atmospheric Environment and Extreme Meteorology,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China||College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,ChinaState Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China||College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,China||State Key Laboratory of Atmospheric Environment and Extreme Meteorology,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing,China
稳定分层各向异性CO2通量
Stable stratificationAnisotropyCO2 flux
《大气和海洋科学快报（英文版）》 2026 (4)
14-20,7
This work was supported by the National Natural Science Foundation of China[grant numbers 42175101,42175103,and 42250204].
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