Biases of five latent heat flux products and their impacts on mixed-layer temperature estimates in the South China Sea
Wang, X; Zhang, RW; Huang, J; Zeng, LL; Huang, F; hj@grmc.gov.cn
2017
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
卷号122期号:6页码:5088-5104
摘要Five latent heat flux (LHF) products are evaluated based on in situ observations in the South China Sea (SCS), including the ECWMF ERA-Interim (ERA-I), the NCEP2, the Objectively Analyzed air-sea Fluxes (OAFlux), the Japanese 55 year Reanalysis (JRA55), and the TropFlux data sets. The results show that there are good correlations between the LHF products and observations, ranging from 0.68 to 0.74. However, mean biases of 28 to 40Wm(-2) exist in the LHF products with respect to the observations. For root-mean-square errors, the OAFlux data set is the closest to the observations, followed by ERA-I and TropFlux, while the NCEP2 data set shows significant overestimation. It is found that the biases in the near-surface-specific humidity are most correlated with the biases in the LHF products, followed by the biases in the near-surface wind speed, air temperature, and sea surface temperature. The biases in the LHF products have a prominent seasonal variation that is 25 W m(-2) higher in boreal winter than in summer. Using the thermal equation, it is shown that the tendency errors of the mixed-layer temperature estimated by the biases in the LHF products vary from 22.0 to 3.5 degrees C/month in the SCS. When all of the products are averaged, the errors are reduced to a range of 20.7 to 1.5 degrees C/month. It is noteworthy that the errors in summer are more obvious than those in winter, since a thinner mixed layer in the summer can amplify the effect of even a small bias in the LHF.
部门归属[Wang, Xin; Zeng, Lili] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou, Guangdong, Peoples R China; [Wang, Xin] Qingdao Natl Lab Marine Sci & Technol, Lab Reg Oceanog & Numer Modeling, Qingdao, Peoples R China; [Zhang, Rongwang; Huang, Fei] Ocean Univ China, Phys Oceanog Lab CIMST, Qingdao, Peoples R China; [Zhang, Rongwang; Huang, Fei] Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China; [Huang, Jian; Huang, Fei] China Meteorol Adm, Guangzhou Inst Trop & Marine Meteorol, Joint Open Lab Marine Meteorol, Guangzhou, Guangdong, Peoples R China
资助项目LTO
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16456
专题热带海洋环境国家重点实验室(LTO)
通讯作者hj@grmc.gov.cn
推荐引用方式
GB/T 7714
Wang, X,Zhang, RW,Huang, J,et al. Biases of five latent heat flux products and their impacts on mixed-layer temperature estimates in the South China Sea[J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,2017,122(6):5088-5104.
APA Wang, X,Zhang, RW,Huang, J,Zeng, LL,Huang, F,&hj@grmc.gov.cn.(2017).Biases of five latent heat flux products and their impacts on mixed-layer temperature estimates in the South China Sea.JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS,122(6),5088-5104.
MLA Wang, X,et al."Biases of five latent heat flux products and their impacts on mixed-layer temperature estimates in the South China Sea".JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS 122.6(2017):5088-5104.
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