Effects of precipitation on sonic anemometer measurements of turbulent fluxes in the atmospheric surface layer

CORC > 南海海洋研究所 > 中国科学院南海海洋研究所 > 热带海洋环境国家重点实验室(LTO)

	Effects of precipitation on sonic anemometer measurements of turbulent fluxes in the atmospheric surface layer
	Zhang Rongwang; Huang Jian; Wang Xin; Zhang Jun A; Huang Fei
刊名	JOURNAL OF OCEAN UNIVERSITY OF CHINA
	2016
卷号	15 期号:3 页码:389-398
关键词	precipitation sonic anemometer virtual temperature turbulent flux spectra
通讯作者	Xin, W (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, Guangzhou 510301, Guangdong, Peoples R China.
中文摘要	Effects caused by precipitation on the measurements of three-dimensional sonic anemometer are analyzed based on a field observational experiment conducted in Maoming, Guangdong Province, China. Obvious fluctuations induced by precipitation are observed for the outputs of sonic anemometer-derived temperature and wind velocity components. A technique of turbulence spectra and cospectra normalized in the framework of similarity theory is utilized to validate the measured variables and calculated fluxes. It is found that the sensitivity of sonic anemometer-derived temperature to precipitation is significant, compared with that of the wind velocity components. The spectra of wind velocity and cospectra of momentum flux resemble the standard universal shape with the slopes of the spectra and cospectra at the inertial subrange, following the -2/3 and -4/3 power law, respectively, even under the condition of heavy rain. Contaminated by precipitation, however, the spectra of temperature and cospectra of sensible heat flux do not exhibit a universal shape and have obvious frequency loss at the inertial subrange. From the physical structure and working principle of sonic anemometer, a possible explanation is proposed to describe this difference, which is found to be related to the variations of precipitation particles. Corrections for errors of sonic anemometer-derived temperature under precipitation is needed, which is still under exploration.
学科主题	Oceanography
内容类型	期刊论文
源URL	[http://ir.scsio.ac.cn/handle/344004/15361]
专题	南海海洋研究所_热带海洋环境国家重点实验室(LTO)
推荐引用方式 GB/T 7714	Zhang Rongwang,Huang Jian,Wang Xin,et al. Effects of precipitation on sonic anemometer measurements of turbulent fluxes in the atmospheric surface layer[J]. JOURNAL OF OCEAN UNIVERSITY OF CHINA,2016,15(3):389-398.
APA	Zhang Rongwang,Huang Jian,Wang Xin,Zhang Jun A,&Huang Fei.(2016).Effects of precipitation on sonic anemometer measurements of turbulent fluxes in the atmospheric surface layer.JOURNAL OF OCEAN UNIVERSITY OF CHINA,15(3),389-398.
MLA	Zhang Rongwang,et al."Effects of precipitation on sonic anemometer measurements of turbulent fluxes in the atmospheric surface layer".JOURNAL OF OCEAN UNIVERSITY OF CHINA 15.3(2016):389-398.