| 植被对季节内振荡影响的数值模拟 |
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| 作者姓名： | HAN Ying XU Zhong-Feng |
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| 作者单位： | 维多利亚大学,中国科学院大气物理研究所 |
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| 基金项目： | supported by the National Natural Science Foundation of China (General Program (Grant No.40905042)and Key Program (Grant No. 40830956)) |
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| 摘 要： | The influences of vegetation on intraseasonal oscillation (ISO) were examined using the Community Atmosphere Model version 3 (CAM3).Two 15-year numerical experiments were completed:the first was performed with a realistic vegetation distribution (VEG run),and the second was identical to the VEG run except without land vegetation (NOVEG run).Generally speaking,CAM3 was able to reproduce the spatial distribution of the ISO,but the ISO intensity in the simulation was much weaker than that observed in nature:the ISO has a relatively much stronger signal.A comparison of the VEG run with the NOVEG run revealed that the presence of vegetation usually produces a weak ISO.The vegetation effects on ISO intensity were significant over West Africa and South Asia,especially in the summer half-year.Vegetation also plays an important role in modulating ISO propagation.The eastward propagation of the ISO in the VEG run was clearer than that in the NOVEG run over the West African and Maritime Continent regions.The northward propagation of the ISO in the VEG run was more consistent with observation than that in the NOVEG run.
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| 关 键 词： | vegetation intraseasonal oscillation ISO intensity ISO propagation community atmosphere model |
Impacts of Vegetation on the Intraseasonal Oscillation Simulated by the Community Atmosphere Model (CAM3) |
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| HAN Ying,XU Zhong-Feng.Impacts of Vegetation on the Intraseasonal Oscillation Simulated by the Community Atmosphere Model (CAM3)[J].Atmospheric and Oceanic Science Letters,2011,4(1):1-6. |
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| Authors: | HAN Ying XU Zhong-Feng |
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| Institution: | Department of Mathematics and Statistics, University of Victoria, Victoria, British Columbia, Canada;National Meteorological Center, Chinese Meteorological Administration, Beijing 100871, China,Key Laboratory of Regional Climate-Environment for Temperate East Asia (RCE-TEA), Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | The influences of vegetation on intraseasonal oscillation (ISO) were examined using the Community Atmosphere Model version 3 (CAM3). Two 15-year numerical experiments were completed: the first was performed with a realistic vegetation distribution (VEG run), and the second was identical to the VEG run except without land vegetation (NOVEG run). Generally speaking, CAM3 was able to reproduce the spatial distribution of the ISO, but the ISO intensity in the simulation was much weaker than that observed in nature: the ISO has a relatively much stronger signal. A comparison of the VEG run with the NOVEG run revealed that the presence of vegetation usually produces a weak ISO. The vegetation effects on ISO intensity were significant over West Africa and South Asia, especially in the summer half-year. Vegetation also plays an important role in modulating ISO propagation. The eastward propagation of the ISO in the VEG run was clearer than that in the NOVEG run over the West African and Maritime Continent regions. The northward propagation of the ISO in the VEG run was more consistent with observation than that in the NOVEG run. |
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| Keywords: | vegetation intraseasonal oscillation ISO intensity ISO propagation community atmosphere model |
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