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The warm season characteristics of the turbulence structure and transfer of turbulent kinetic energy over alpine wetlands at the source of the Yellow River
Jia, DY (Jia, Dongyu)1,2; Wen, J (Wen, Jun)1,3; Ma, YM (Ma, Yaoming)4; Wang, X (Wang, Xin)1; Zhang, TT (Zhang, Tangtang)1; Liu, R (Liu, Rong)1; Lai, X (Lai, Xin)3
Source PublicationMETEOROLOGY AND ATMOSPHERIC PHYSICS
2018-12-01
Volume130Issue:5Pages:529-542
DOI10.1007/s00703-017-0534-9
Abstract

This study focuses on the relationships between wind velocity, temperature, water vapour, CO2, and the stability parameters over an alpine wetland. The turbulence data collected by a suite of instruments in the Maduo wetland, which is located at the source of the Yellow River (from June to August 2014), were used to study the characteristics of turbulence transport, turbulence kinetic energy, humidity variance, temperature variance, CO2 variance, and turbulence intensity. The results show that the normalized standard deviation of the wind velocity components (sigma(u), sigma(v), and sigma(w)) generally satisfies a 1/3 power-law relation. The values of sigma(u,v,w)/u(*) increase with increasing |(z-d)/L|. Moreover, the normalized standard deviation of the temperature, CO2, and water vapour is scatter under stable stratification at night. However, they increase as the absolute stability parameters decrease under unstable stratification. The results also indicate that the turbulent kinetic energy and turbulence intensity reach their peak values when the stability parameter is close to zero. When the wind velocity is less than 2m/s, the turbulence intensities in the three directions decrease rapidly with increasing wind velocity. Moreover, the average value of C-D (the overall momentum transfer coefficient) is significantly larger than those of C-H (the sensible heat transfer coefficient) under different conditions. The bulk transport coefficient decreases as the stability increases. Finally, because of the high temperatures, the leaf stomata are nearly closed, and the pulse of the CO2 flux is very small at noon time. Meanwhile, the latent and sensible heat fluxes reach their maximum values.

Subject Area地理学
WOS IDWOS:000444410400003
Language英语
Indexed BySCIE
KeywordSurface-layer Turbulence Monin-obukhov Similarity Stable Boundary-layer Flux-variance Method Convective Conditions Complex Terrain Tibetan Plateau Urban Land Temperature
WOS Research AreaMeteorology & Atmospheric Sciences
WOS SubjectMeteorology & Atmospheric Sciences
Cooperation Status国内
ISSN0177-7971
Department环境变化与地表过程重点实验室
PublisherSPRINGER WIEN
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8538
Collection图书馆
Corresponding AuthorWen, J (Wen, Jun)
Affiliation1.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730030, Gansu, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.Chengdu Univ Informat Technol, Coll Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu 610225, Sichuan, Peoples R China;
4.Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Change & Land Surface Pr, Beijing 100101, Peoples R China.
Recommended Citation
GB/T 7714
Jia, DY ,Wen, J ,Ma, YM ,et al. The warm season characteristics of the turbulence structure and transfer of turbulent kinetic energy over alpine wetlands at the source of the Yellow River[J]. METEOROLOGY AND ATMOSPHERIC PHYSICS,2018,130(5):529-542.
APA Jia, DY .,Wen, J .,Ma, YM .,Wang, X .,Zhang, TT .,...&Lai, X .(2018).The warm season characteristics of the turbulence structure and transfer of turbulent kinetic energy over alpine wetlands at the source of the Yellow River.METEOROLOGY AND ATMOSPHERIC PHYSICS,130(5),529-542.
MLA Jia, DY ,et al."The warm season characteristics of the turbulence structure and transfer of turbulent kinetic energy over alpine wetlands at the source of the Yellow River".METEOROLOGY AND ATMOSPHERIC PHYSICS 130.5(2018):529-542.
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