| 海南岛不同土地覆盖资料对WRF模拟的影响* |
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| 引用本文： | 冯箫,施萧.海南岛不同土地覆盖资料对WRF模拟的影响*[J].新疆气象,2019,13(2):123-129. |
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| 作者姓名： | 冯箫 施萧 |
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| 作者单位： | 西昌卫星发射中心,西昌卫星发射中心 |
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| 摘 要： | 提取GLC2009土地覆盖数据,将其运用到WRF数值模式并与模式自带的MODIS、USGS土地覆盖进行对比,以海南岛做为研究区域,选择一次海风锋天气过程进行敏感性分析,结果表明：①GLC2009对海南岛农耕地、森林的划分最接近实际情况,在海南岛平原以及丘陵地带,MODIS和USGS划分的农耕地比例过高,而在山区森林比例偏低；②GLC2009、MODIS、USGS对海南岛北部的降水模拟出现了空报,但是GLC2009对东海岸的强降水模拟的较好,并避免了MODIS和USGS在海南西南部的降水空报的情况；③GLC2009模拟的10米风场清晰刻画了东海岸海风锋辐合,其相对合理的森林覆盖提高了地表粗糙度并增强了风场辐合、低反照率对地面气温的增加和海陆热力差异的增强有一定的促进作用。④GLC2009对这次海风锋过程中模拟的感热通量和潜热通量都要高于MODIS和USGS,这种陆气间的热通量交换利于强对流天气的触发,发展。
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| 关 键 词： | 土地覆盖 GLC2009 WRF |
| 收稿时间： | 2017/9/4 0:00:00 |
| 修稿时间： | 2017/12/19 0:00:00 |
The Effects Of Different Land Cover Data About WRF Simulation In Hainan Island |
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| Feng Xiao and Shi Xiao.The Effects Of Different Land Cover Data About WRF Simulation In Hainan Island[J].Bimonthly of Xinjiang Meteorology,2019,13(2):123-129. |
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| Authors: | Feng Xiao and Shi Xiao |
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| Institution: | Meteorological Division of PLA Troops and Meteorological Division of PLA Troops |
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| Abstract: | The land cover data of GLC2009 were extracted and applied to WRF numerical model and compared with MODIS and USGS land cover. Hainan Island was selected as the research area, and the sensitivity analysis was carried out. The results showed that: (1) GLC2009 The proportion of farmland in MODIS and USGS is too high, and the proportion of forest in mountainous areas is low. (2) GLC2009, MODIS, USGS are the northern part of Hainan Island, and the proportion of farmland in the plains and hilly areas of Hainan Island is relatively close to the actual situation. But the GLC2009 has a good simulation of the strong precipitation on the east coast and has avoided the precipitation of MODIS and USGS in the southwest of Hainan. (3) The GLC2009 simulated 10-meter wind field clearly portrays the east coast The relatively sharp forest cover improves the surface roughness and enhances the convergence of the wind field. The low albedo has a certain effect on the increase of the ground temperature and the enhancement of the difference between the sea and land. The simulated heat flux and latent heat flux simulated by GLC2009 were higher than that of MODIS and USGS. The heat flux exchange between land and gas was favorable for the development and development of strong convective weather. |
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| Keywords: | Land cover GLC2009 WRF |
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