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中国云气候特征的分析
CLOUD CLIMATOLOGY CHARACTERISTICS OF CHINA FROM ISCCP DATA
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摘要: 利用1983年7月至2001年8月的ISCCP卫星总云量资料, 分析了我国总云量的空间分布特征, 并将全国用193个网格点表示, 采用聚类分析方法, 按照总云量年内变化规律相同的原则将中国分为3个区, 逐区讨论了总云量的年内变化特征;同时, 分析了18年来中国总云量的变化趋势。最后利用奇异值分解法(SVD)找到了我国青藏高原冬季总云量与全国夏季降水的高相关区, 证明青藏高原总云量与我国东北降水正相关密切。
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关键词:
- 卫星总云量;
- 时空分布;
- 聚类分析;
- 奇异值分解法(SVD)
Abstract: Based on the cloud amount of ISCCP D2, the spatial distribution characters and the temporal variation of cloud amount over 3 regions of China were analyzed using system cluster analysis method. The variation trend of cloud over China was discussed. It concludes that in north east of China the cloud amount increases and decreases in the west of China and in the north of China. The singular value decomposition (SVD) modes based on two fields between winter total cloud amount over Tibetan Plateau and summer precipitation in China were computed and a credibility of teleconnection was analyzed by SVD. The result shows that the correlation between winter total cloud amount over Tibetan Plateau and the summer precipitation in the parts of north and northeast China is obvious. -
表 1 青藏高原冬季总云量和我国夏季降水SVD的特征值及累积方差贡献
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[1] Rossow W B,Walker AW,Garder L C. Comparision of ISCCP and other cloud amounts. J Climate, 1993, 6: 2394～2418. doi: 10.1175/1520-0442(1993)006<2394:COIAOC>2.0.CO;2 [2] Mokhov I I, Schlesinger M E. Analysis of global cloudiness,1,Comparision of ISCCP, Meteor and Nimbus 7 satellite data. J Geophys Res, 1994, 99: 17045～17065. doi: 10.1029/94JD00943 [3] Kondragunta C R, Gruber A. Diurnal variations of the ISCCP cloudiness. Geophys Res Lett, 1994, 21: 2015～2018. doi: 10.1029/94GL01459 [4] 周允华,叶芳德,周树秀,等. 利用TIROS-N卫星云图对1979年夏季青藏高原云量分布的研究. 高原气象,1983,2(1): 39～51. http://www.cnki.com.cn/Article/CJFDTOTAL-GYQX198301003.htm [5] 魏丽,钟强,侯萍. 中国大陆卫星反演云参数的评估. 高原气象,1996,15(2):147～156. http://www.cnki.com.cn/Article/CJFDTOTAL-GYQX602.002.htm [6] 翁笃铭,韩爱梅. 我国卫星总云量与地面总云量分布的对比分析. 应用气象学报,1998, 9(1):32～37. http://qikan.camscma.cn/jams/ch/reader/view_abstract.aspx?file_no=19980105&flag=1 [7] 王可丽,江灏,陈世强. 青藏高原地区的总云量. 高原气象,2001,20(3): 252～257. http://www.cnki.com.cn/Article/CJFDTOTAL-GYQX200103004.htm [8] 吴鹤轩. 青藏高原的低云. 北京:气象出版社,1985. 1～4. [9] 中国气候资源地图集. 北京:中国地图出版社,1994. 189～191. [10] 魏凤英. 现代气候统计诊断与预测技术. 北京:气象出版社,1999. 173～182. [11] 江志红,丁裕国. 我国夏季降水距平与北太平洋海温异常的奇异值分解法分析. 热带气象学报,1995,11(2):133-141. http://www.cnki.com.cn/Article/CJFDTOTAL-RDQX502.004.htm -
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