卫星遥感地表植被及其在华南暴雨中尺度数值模拟中的应用试验
LAND VEGETATION RETRIVING FROM SATELLITE REMOTE SENSING AND APPLICATION TEST IN MESOSCALE SIMULATION FOR HEAVY RAINFALL OF SOUTH CHINA
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摘要: 将我国植被资料和NCAR资料分别用于非静力平衡中尺度模式MM5, 对1998年5月23~24日华南暴雨进行数值模拟试验, 比较其对降水量和动力热力场预报的影响, 结果表明, 当网格格距为45 km时, 二者差别很小, 当网格格距减小到5~15 km, 预报降水量最大值增加了12%~14%, 更接近观测值, 同时对低层大气热力动力结构也有一定影响。Abstract: The Land vegetation data set retrieved from NOAA satellite remote sensing data in the HUAMEX project during May and June 1998 is applied in the PSU/NCAR mesoscale model (MM5) to simulate a heavy rainfall case during 23-24 May 1998 and compared with the NCAR land-use data set. Results show that with our land vegetation data, the simulated 24 h accumulated rainfall increased about 12%-14% for a grid spacing of 5-15 km comparing with NCAR data. The dynamic and thermodynamic structures at the low levels are also affected. For lager grid spacing (45 km), the effects were not obvious.
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Key words:
- Land vegetation;
- Mesoscale simulation;
- Heavy rain
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表 1 NCAR地表植被分类及物理参数
表 2 NSMC地表植被分类及物理参数 (1998年)
表 3 在各种降水参数化方案中使用NCAR和NSMC植被资料所得到最大降水中心雨量比较
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[1] 李毓芳, 安塞斯R A.次天气尺度和中尺度预报中的初值问题.气象学报, 1984, 42:499~504. http://www.cnki.com.cn/Article/CJFDTOTAL-QXXB198404015.htm [2] Dickinson R F. Modelling tropical deforestation:A study of GCM land-surface parameterizations.Q. J. R. Met. Soc., 1988, 114:439~462. doi: 10.1002/(ISSN)1477-870X [3] Shukla J, et al. Amazon deforestation and climate change. Science, 1990, 247:1322~1325. doi: 10.1126/science.247.4948.1322 [4] 李月安, 皇甫雪官.地表参数对T106模式预报的影响.应用气象学报, 2000, 11:65~70. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=20000111&flag=1 [5] Norwine J, Greegor D H. Vegetation classification based on advanced very high resolution radiometer (AVHRR) satellite imagery. Remote Sensing of Environment, 1993, 13:69~87. http://www.sciencedirect.com/science/article/pii/0034425783900287 [6] Townshed J R G, Justice C O, Kalb V. Characterization and classification of South American land and cover types using satellite data. Int J of Remote Sensing, 1987, 7:1395~1416. doi: 10.1080/01431168708954764?scroll=top&needAccess=true [7] Tucker C J, Townshed J R G, Goff T E. African land cover classification using satellite data. Science, 1985, 227:369~375. doi: 10.1126/science.227.4685.369 [8] Derrien M. Vegetation distribution with NOAA/AVHRR. Proceedings of 6th AVHRR data user's meeting, 1993, 101~108. [9] 盛永伟, 陈维英, 肖乾广, 等.利用气象卫星植被指数进行我国植被的宏观分类.科学通报, 1995, 40:68~71. http://www.cnki.com.cn/Article/CJFDTOTAL-KXTB199501021.htm [10] Grell G A. A description of the fifth-generation Penn State/NCAR mesoscale model (MM5). NCAR/TN-398+STR NCAR technical note, 1994, 138. http://opensky.ucar.edu/islandora/object/technotes:170 [11] Roozekrans J N. The monitoring of desetification processes in SPAIN using NOAA-AVHRR data. Proceedings of 6th AVHRR data user's meeting, Belgirate, Italy, 29 June-2 July, 1993. [12] 肖乾广, 陈维英, 李靖, 等. 气象卫星监测干旱灾害的方法研究. 中国气象局气象服务与气候司编. 气象卫星遥感技术为农业服务应用研讨会文集. 北京: 气象出版社, 1996. [13] Dabrowska-Zielinska K, et al. NOAA AVHRR applied for monitoring of soil water condition. Proceedings of 6th AVHRR data user's meeting, Belgirate, Italy, 29 June-2 July, 1993. [14] 李国平, 段延杨, 史有瑜. 青藏高原地面拖曳系数的变化特征. 中日亚洲季风机制合作研究论文集. 北京: 气象出版社, 1998. 3. [15] 隋洪智. 热惯量方法监测土壤水分. 遥感动态研究. 北京: 科学出版社. 1990. [16] Ogura Y, Portis D. Structure of the cold front observed in SESAME-AVE Ⅲ and its comparison with the Hoskins-Bretherton frontogenesis model. J. Atmos. Sci., 1982, 39:2773~2792. doi: 10.1175/1520-0469(1982)039<2773:SOTCFO>2.0.CO;2