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Anisotropic modeling of CO2 turbulent flux in a stably stratified atmospheric boundary layer

Kang Zhang Yan Zhang Lei Liu Yu Shi Xueling Cheng Fei Hu

大气和海洋科学快报（英文版）2026，Vol.19Issue(4)：14-20,7.

大气和海洋科学快报（英文版）2026，Vol.19Issue(4)：14-20,7.DOI:10.1016/j.aosl.2025.100677

Anisotropic modeling of CO2 turbulent flux in a stably stratified atmospheric boundary layer

Kang Zhang ¹Yan Zhang ²Lei Liu ²Yu Shi ¹Xueling Cheng ²Fei Hu¹

作者信息

1. 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,China
2. 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
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摘要

Abstract

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.

关键词

稳定分层/各向异性/CO2通量

Key words

Stable stratification/Anisotropy/CO2 flux

引用本文复制引用

Kang Zhang,Yan Zhang,Lei Liu,Yu Shi,Xueling Cheng,Fei Hu..Anisotropic modeling of CO2 turbulent flux in a stably stratified atmospheric boundary layer[J].大气和海洋科学快报（英文版）,2026,19(4):14-20,7.

基金项目

This work was supported by the National Natural Science Foundation of China[grant numbers 42175101,42175103,and 42250204]. （）

大气和海洋科学快报（英文版）

ISSN：1674-2834

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