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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; Xin, W (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, Guangzhou 510301, Guangdong, Peoples R China.
2016
Source PublicationJOURNAL OF OCEAN UNIVERSITY OF CHINA
Volume15Issue:3Pages:389-398
AbstractEffects 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.
Department[Zhang Rongwang; Huang Fei] Ocean Univ China, Phys Oceanog Lab, Qingdao Collaborat Innovat Ctr Marine Sci & Techn, Qingdao 266100, Peoples R China; [Huang Jian; Huang Fei] CMA, Guangzhou Inst Trop & Marine Meteorol, JOLMM, Guangzhou 510080, Guangdong, Peoples R China; [Wang Xin] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, Guangzhou 510301, Guangdong, Peoples R China; [Zhang Jun A] Univ Miami, Rosenstiel Sch Marine & Atmospher Sci, Coral Gables, FL 33124 USA ; LTO
KeywordPrecipitation Sonic Anemometer Virtual Temperature Turbulent Flux Spectra
Subject AreaOceanography
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/15361
Collection热带海洋环境国家重点实验室(LTO)
Corresponding AuthorXin, W (reprint author), Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog LTO, Guangzhou 510301, Guangdong, Peoples R China.
Recommended Citation
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,&Xin, W .(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.
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