Tall tower CO2 concentration simulation using the WRF-STILT model
HU Cheng1,2, ZHANG Mi1,2, XIAO Wei1,2, WANG Yong-wei1,2, WANG Wei1,2, TIM Griffis3, LIU Shou-dong1,2, LI Xu-hui1
1. Yale-NUIST Center on Atmospheric Environment, International Joint Laboratory on Climate and Environment Change(ILCEC), Nanjing University of Information Science & Technology, Nanjing 210044, China;
2. Key Laboratory of Meteorological Disaster, Ministry of Education(KLME), Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CICFEMD), Nanjing University of Information Science & Technology, Nanjing 210044, China;
3. University of MinnesotaTwin Cities, Saint Paul 55108, U. S. A
By using high spatial and temporal resolution EDGAR fossil emissions (13 categories) and Carbon Tracker NEE flux,WRF-STILT model was evaluated with one year (2008) CO2 concentration observations at a homogeneous agricultural underlying surface,which located in U.S.corn belt.The results showed that this model could capture the strong seasonal and daily variation,with RMSE be 10.6×10-6,R=0.44(n=7784,P<0.001).The linear regression slope of growing season concentration enhancement was 1.08(R=0.52,P<0.001),indicating high consistency,while the intercept (7.26×10-6) reflects the overestimation of fossil emission or underestimation of NEE.During this year round,observed enhancement was 4.83×10-6,smaller than sum of the fossil enhancement contribution (6.61×10-6) and NEE contribution (3.23×10-6).The oil production and refineries and energy industry contributed 2.55×10-6(38.6%) and 1.43×10-6(21.6%) of all fossil enhancements,separately.Biomass burning only contributes 0.06×10-6 to the total enhancement which was ignorable compared with fossil and NEE.At the end,it can be concluded that this method can be used to retrieve regional scale greenhouse gas flux in China.
胡诚, 张弥, 肖薇, 王咏薇, 王伟, Tim Griffis, 刘寿东, 李旭辉. 基于WRF-STILT模型对高塔CO2浓度的模拟研究[J]. 中国环境科学, 2017, 37(7): 2424-2437.
HU Cheng, ZHANG Mi, XIAO Wei, WANG Yong-wei, WANG Wei, TIM Griffis, LIU Shou-dong, LI Xu-hui. Tall tower CO2 concentration simulation using the WRF-STILT model. CHINA ENVIRONMENTAL SCIENCECE, 2017, 37(7): 2424-2437.
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