Evaluation of OAFlux datasets based on in situ air-sea flux tower observations over Yongxing Island in 2016
Zhou, Fenghua1,2; Zhang, Rongwang1; Shi, Rui1; Chen, Ju1; He, Yunkai1; Wang, Dongxiao1; Xie, Qiang3,4
2018-11-09
发表期刊ATMOSPHERIC MEASUREMENT TECHNIQUES
ISSN1867-1381
卷号11期号:11页码:6091-6106
摘要The Yongxing air-sea flux tower (YXASFT), which was specially designed for air-sea boundary layer observations, was constructed on Yongxing Island in the South China Sea (SCS). Surface bulk variable measurements were collected during a 1-year period from 1 February 2016 to 31 January 2017. The sensible heat flux (SHF) and latent heat flux (LHF) were further derived via the Coupled Ocean-Atmosphere Response Experiment version 3.0 (COARE3.0). This study employed the YXASFT in situ observations to evaluate the Woods Hole Oceanographic Institute (WHOI) Objectively Analyzed Air-Sea Fluxes (OAFlux) reanalysis data products. First, the reliability of COARE3.0 data in the SCS was validated using direct turbulent heat flux measurements via an eddy covariance flux (ECF) system. The LHF data derived from COARE3.0 are highly consistent with the ECF with a coefficient of determination (R-2) of 0.78. Second, the overall reliabilities of the bulk OAFlux variables were diminished in the order of T-a (air temperature), U (wind speed), Q(a) (air humidity) and T-s (sea surface temperature) based on a combination of R-2 values and biases. OAFlux overestimates (underestimates) U (Q(a)) throughout the year and provides better estimates for winter and spring than in the summer-autumn period, which seems to be highly correlated with the monsoon climate in the SCS. The lowest R-2 is between the OAFlux-estimated and YXASFT-observed T-s, indicating that T-s is the least reliable dataset and should thus be used with considerable caution. In terms of the heat fluxes, OAFlux considerably overestimates LHF with an ocean heat loss bias of 52 wm(-2) in the spring, and the seasonal OAFlux LHF performance is consistent with U and Q(a). The OAFlux-estimated SHF appears to be a poor representative, with enormous overestimations in the spring and winter, while its performance is much better during the summer-autumn period. Third, analysis reveals that the biases in Q(a) are the most dominant factor on the LHF biases in the spring and winter, and that the biases in both Q(a) and U are responsible for controlling the biases in LHF during the summer-autumn period. The biases in T-s are responsible for controlling the SHF biases, and the effects of biases in T-s on the biases in SHF during the spring and winter are much greater than that in the summer-autumn period.
DOI10.5194/amt-11-6091-2018
资助者Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS) ; National Natural Science Foundation of China ; Chinese Academy of Sciences (CAS) ; Station Network Construction Project, Xisha Marine Observatory of the CAS ; National Key R&D Program of China ; NOAA Climate Observations and Monitoring (COM) program
语种英语
资助项目Key Research Program of Frontier Sciences, Chinese Academy of Sciences (CAS)[QYZDJ-SSW-DQC022] ; National Natural Science Foundation of China[41706102] ; Chinese Academy of Sciences (CAS) ; Station Network Construction Project, Xisha Marine Observatory of the CAS[KZCX2-YW-Y202] ; National Key R&D Program of China[2017YFA0603200] ; NOAA Climate Observations and Monitoring (COM) program
关键词[WOS]SOUTH CHINA SEA ; LATENT-HEAT FLUX ; ATMOSPHERE RESPONSE EXPERIMENT ; BULK AERODYNAMIC ALGORITHMS ; SURFACE METEOROLOGY ; EQUATORIAL PACIFIC ; TURBULENT FLUXES ; ATLANTIC-OCEAN ; MONSOON ONSET ; EXCHANGE
WOS研究方向Meteorology & Atmospheric Sciences
WOS类目Meteorology & Atmospheric Sciences
WOS记录号WOS:000449655100003
出版者COPERNICUS GESELLSCHAFT MBH
引用统计
文献类型期刊论文
条目标识符http://ir.idsse.ac.cn/handle/183446/6351
专题深海科学研究部_海洋环流观测与数值模拟研究室
通讯作者Wang, Dongxiao; Xie, Qiang
作者单位1.Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510300, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Deep Sea Sci & Engn, Sanya 572000, Peoples R China
4.Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao 266237, Peoples R China
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Zhou, Fenghua,Zhang, Rongwang,Shi, Rui,et al. Evaluation of OAFlux datasets based on in situ air-sea flux tower observations over Yongxing Island in 2016[J]. ATMOSPHERIC MEASUREMENT TECHNIQUES,2018,11(11):6091-6106.
APA Zhou, Fenghua.,Zhang, Rongwang.,Shi, Rui.,Chen, Ju.,He, Yunkai.,...&Xie, Qiang.(2018).Evaluation of OAFlux datasets based on in situ air-sea flux tower observations over Yongxing Island in 2016.ATMOSPHERIC MEASUREMENT TECHNIQUES,11(11),6091-6106.
MLA Zhou, Fenghua,et al."Evaluation of OAFlux datasets based on in situ air-sea flux tower observations over Yongxing Island in 2016".ATMOSPHERIC MEASUREMENT TECHNIQUES 11.11(2018):6091-6106.
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