气候变化领域集成服务门户(CCPortal): The warm season characteristics of the turbulence structure and transfer of turbulent kinetic energy over alpine wetlands at the source of the Yellow River

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DOI	10.1007/s00703-017-0534-9
	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, Dongyu; Wen, Jun; Ma, Yaoming; Wang, Xin; Zhang, Tangtang; Liu, Rong; Lai, Xin
通讯作者	Wen, J (通讯作者)
发表日期	2018
ISSN	0177-7971
EISSN	1436-5065
起始页码	529
结束页码	542
卷号	130 期号:5
英文摘要	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.
关键词	SURFACE-LAYER TURBULENCE MONIN-OBUKHOV SIMILARITY FLUX-VARIANCE METHOD URBAN TEMPERATURE VALIDITY BALANCE HEAT
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000444410400003
来源期刊	METEOROLOGY AND ATMOSPHERIC PHYSICS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259176
推荐引用方式 GB/T 7714	Jia, Dongyu,Wen, Jun,Ma, Yaoming,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]. 中国科学院青藏高原研究所,2018,130(5).
APA	Jia, Dongyu.,Wen, Jun.,Ma, Yaoming.,Wang, Xin.,Zhang, Tangtang.,...&Lai, Xin.(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).
MLA	Jia, Dongyu,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).