| 我国大陆地区浓雾发生频数的时空分布研究 |
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| 引用本文： | 孙丹,朱彬,杜吴鹏.我国大陆地区浓雾发生频数的时空分布研究[J].热带气象学报,2008,24(5):497-501. |
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| 作者姓名： | 孙丹 朱彬 杜吴鹏 |
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| 作者单位： | 1. 南京信息工程大学/江苏省灾害重点实验室,江苏,南京,210044;南京信息工程大学/大气物理与大气环境重点实验室,江苏,南京,210044
2. 中国科学院大气物理研究所,北京,100029 |
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| 基金项目： | 公益性行业(气象)科研专项,江苏省自然科学基金 |
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| 摘 要： | 利用中国137个站点1956～2001年46年的浓雾发生频数资料,结合地理信息系统分析作图软件,统计和分析了我国浓雾频数的多年空间分布、年代际变化及各区域浓雾频数变化特征,并作出了雾频数与时间序列相关图.结果表明:我国浓雾频数最多的区域集中在东南沿海、四川盆地等,而浓雾频数最少的区域集中在西北、青藏高原及内蒙;我国浓雾频数从1956年开始基本呈现"两头波谷中间波峰"的时间变化趋势;全国大部分地区雾频数与时间序列的相关系数绝对值小于0.3,且相关系数为负的地区明显多于为正的地区,除了华北平原雾频数整体上增加外,其它地区基本上呈减少趋势或者变化不大.
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| 关 键 词： | 雾频数 空间分布 年代际变化 相关系数 |
| 收稿时间： | 5/3/2007 12:00:00 AM |
| 修稿时间： | 2007/12/17 0:00:00 |
THE TEMPORAL AND SPATIAL DISTRIBUTION OF THICK FOG FREQUENCY IN CHINA |
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| SUN Dan,ZHU Bin and DU Wu-peng.THE TEMPORAL AND SPATIAL DISTRIBUTION OF THICK FOG FREQUENCY IN CHINA[J].Journal of Tropical Meteorology,2008,24(5):497-501. |
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| Authors: | SUN Dan ZHU Bin and DU Wu-peng |
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| Institution: | Jiangsu Key Laboratory of Meteorology Disaster, NUIST, Nanjing 210044, China;Key Laboratory of Atmospheric Physics and Environment, NUIST, Nanjing 210044, China;Jiangsu Key Laboratory of Meteorology Disaster, NUIST, Nanjing 210044, China;Key Laboratory of Atmospheric Physics and Environment, NUIST, Nanjing 210044, China;Institue of Atmospheric Physics, Chinese Academy of Sciences, Beijing 100029, China |
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| Abstract: | Using the thick fog frequency data in 137 station sites for 46 years from 1956 to 2001,and on the basis of Geographic Information System mapping software,this paper runs statistical analysis of the spatial distribution of thick fog frequency,interdecadal variability and regional variability characteristics,and makes time series-related figures of fog frequency. Results have the following findings. Fog concentrated the most in southeast coastal regions and Sichuan Basin but the least in northwest region,the Qinghai-Tibet Plateau and Inner Mongolia. Fog frequency shows a pattern of two valleys at the beginning and ending of the 46-year period,and a wave trough in intermediate time series. The absolute value of fog frequency correlation coefficient is less than 0.3 in most parts of the country while the region of negative correlation coefficient is significantly more than the one of positive correlation coefficient. In addition,the fog frequency in most regions is generally decreased or little changed from 1956 to 2001,except in North China Plain. |
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| Keywords: | fog frequency spatial distribution interdecadal variability correlation coefficient |
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