A New Ocean Mixed-Layer Model Coupled into WRF  

作　　者：WANG Zi-Qian DUAN An-Min 

机构地区：[1]The State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmos- pheric Physics, Chinese Academy of Sciences, Beijing 100029, China [2]Graduate University of Chinese Academy of Sciences, Beijing 100049, China

出　　处：《Atmospheric and Oceanic Science Letters》2012年第3期170-175,共6页大气和海洋科学快报（英文版）

基　　金：supported by the "Strategic Priority Research Program-Climate Change: Carbon Budget andRelated Issue" of the Chinese Academy of Sciences (Grant No.XDA-05110303);the National Basic Research Program of China(Grant Nos. 2010CB951703 and 2009CB421403);the Knowledge Innovation Program of the Chinese Academy of Sciences(Grant Nos. KZCX2-YW-Q11-01 and KZCX2-YW-BR-14)

摘　　要：A new mesoscale air-sea coupled model (WRF- OMLM-Noh) was constructed based on the Weather Research and Forecasting (WRF) model and an improved Mellor-Yamada ocean mixed-layer model from Noh and Kim (OMLM-Noh). Through off-line tests and a simulation of a real typhoon, the authors compared the performance of the WRF-OMLM-Noh with another existing ocean mixed-layer coupled model (WRF-OMLM-Pollard). In the off-line tests with Tropical Ocean Global Atmosphere Program's Coupled Ocean Atmosphere Response Experiment (TOGA-COARE) observational data, the results show that OMLM-Noh is better able to simulate sea surface temperature (SST) variational trends than OMLM -Pollard. Moreover, OMLM-Noh can sufficiently reproduce the diurnal cycle of SST. Regarding the typhoon case study, SST cooling due to wind-driven ocean mixing is underestimated in WRF-OMLM-Pollard, which artificially increases the intensity of the typhoon due to more simulated air-sea heat fluxes. Compared to the WRF- OMLM-Pollard, the performance of WRF-OMLM-Noh is superior in terms of both the spatial distribution and temporal variation of SST and air-sea heat fluxes.A new mesoscale air-sea coupled model （WRF- OMLM-Noh） was constructed based on the Weather Research and Forecasting （WRF） model and an improved Mellor-Yamada ocean mixed-layer model from Noh and Kim （OMLM-Noh）. Through off-line tests and a simulation of a real typhoon, the authors compared the performance of the WRF-OMLM-Noh with another existing ocean mixed-layer coupled model （WRF-OMLM-Pollard）. In the off-line tests with Tropical Ocean Global Atmosphere Program＇s Coupled Ocean Atmosphere Response Experiment （TOGA-COARE） observational data, the results show that OMLM-Noh is better able to simulate sea surface temperature （SST） variational trends than OMLM -Pollard. Moreover, OMLM-Noh can sufficiently reproduce the diurnal cycle of SST. Regarding the typhoon case study, SST cooling due to wind-driven ocean mixing is underestimated in WRF-OMLM-Pollard, which artificially increases the intensity of the typhoon due to more simulated air-sea heat fluxes. Compared to the WRF- OMLM-Pollard, the performance of WRF-OMLM-Noh is superior in terms of both the spatial distribution and temporal variation of SST and air-sea heat fluxes.

关 键 词：WRF-OMLM-Noh sea surface temperature ocean mixed layer air-sea coupled model 

分 类 号：P732[天文地球—海洋科学] P434.5