Evaluation of daily NCEP2 turbulent heat fluxes during southwest monsoon in South China Sea

ZHANG Zeng-hai; JIANGHua; WANG Hui; ZUO Jun-cheng

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ZHANG Zeng-hai, JIANGHua, WANG Hui, ZUO Jun-cheng. Evaluation of daily NCEP2 turbulent heat fluxes during southwest monsoon in South China Sea[J]. Haiyang Xuebao, 2006, 28(2): 29-38.

Citation:

ZHANG Zeng-hai, JIANGHua, WANG Hui, ZUO Jun-cheng. Evaluation of daily NCEP2 turbulent heat fluxes during southwest monsoon in South China Sea[J]. Haiyang Xuebao, 2006, 28(2): 29-38.

ZHANG Zeng-hai, JIANGHua, WANG Hui, ZUO Jun-cheng. Evaluation of daily NCEP2 turbulent heat fluxes during southwest monsoon in South China Sea[J]. Haiyang Xuebao, 2006, 28(2): 29-38.

Citation:

ZHANG Zeng-hai, JIANGHua, WANG Hui, ZUO Jun-cheng. Evaluation of daily NCEP2 turbulent heat fluxes during southwest monsoon in South China Sea[J]. Haiyang Xuebao, 2006, 28(2): 29-38.

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Evaluation of daily NCEP2 turbulent heat fluxes during southwest monsoon in South China Sea

1.
College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266003, China;Institute of Climate System, Chinese Academy of Meteorological Sciences, Beijing 100081, China
2.
Institute of Climate System, Chinese Academy of Meteorological Sciences, Beijing 100081, China
3.
College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266003, China

Received Date: 2005-08-26
Rev Recd Date: 2005-12-30

Abstract

Abstract

The commonly used turbulent heat flux es in the National Centers for Environment Prediction-National Center for Atmospheric Research reanaly sis 2 (NCEP 2) are evaluated using three air-sea flux research tower observations and two cruises in the South China Sea Monsoon experiment (SCSMEX) as the references.The mean latent heat fluxes from NCEP2 are overestimated 6(11%),2(2%),7(7%) and 13 W/m² (16%) during experiment Xisha2000,Xisha1998,Kexue 1 and Shiyan 3 respectively and underestimated 10 W/m² (11%) in Xisha2002.The overestimations in sensible heat flux change from 7 (130%),3(64%),7(170%),5(53%) to 5 W/m² (72%) in Xisha2002,Xisha2000,Xisha1998,Kexue 1 and Shiyan 3 experiments.The correlations between the time series of NCEP2 and the observations are relatively weak.The errors from the oceanic turbulent heat losses in NCEP2 are mainly due to bulk variables and algorithm.In all variables,the errors coming from sea surface temperature and wind speed are especially important.The results suggest that the recalculated NCEP2 surface turbulent heat fluxes using COARE algorithm are more physically reasonable,especially for latent heat flux.
- South China Sea,
- turbulent heat fluxes,
- NCEP2

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References(26)

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