利用南京市空气污染资料、 常规气象观测资料和NCEP再分析资料， 对2008年10月28~29日南京、 镇江、 扬州、 泰州、 盐城等地区出现的一次大范围烟霾天气过程的空气污染状况、 大尺度环流背景、 微观气象要素特征以及影响天气系统的热力和动力场结构等进行了综合分析研究， 并且运用Hysplit-4模式反演了这次过程影响南京地区污染物的扩散轨迹。结果表明： 焚烧秸秆物引起的空气中高颗粒物浓度是造成这次大范围烟霾天气的直接原因； 有利的环流和风场条件, 加上稳定的大气层结， 是烟霾维持和加强的重要条件； 在未达到饱和情况下， 适当增加湿度有利于霾的形成， 且吸湿粒子吸湿凝结增大会使得能见度更加恶化， 烟霾更加严重\.在这次烟霾天气中， 南京地区的污染物源头来自扬州、 镇江、 泰州一带， 最严重时期的污染物主要来自泰州南部。
Abstract
Based on the air pollution index of Nanjing, conventional observation data, and NCEP reanalyzed data, air pollution, large\|scale circumfluence, microcosmic meteorologicalfactors andthermal and dynamical structures during a large\|scale haze process that happened from 28 to 29 October 2008 in Nanjing, Zhenjiang, Yangzhou, Taizhou, Yancheng and other regions were comprehensively analyzed and furthermore the diffused track of pollutants that influences Nanjing was retrieved by the HYSPLIT\|4 model.The results show that the formation of large\|scale haze eventwas direct relate to high concentrations of particulate mattercaused by the burning of straw.The favorable circumfluence, wind field and steady atmospheric stratificationwere important condition for maintainabilityand reinforcement of haze. Under the unsaturation circumstances, the appropriate increase of humidity was conducive to the formation of haze, and coagulation of moisture particles would aggravate visibility. In addition,the Hysplit\|4 trajectory model indicated that the source of the pollutants in Nanjing was from Yangzhou, Zhenjiang and Taizhou areas, and mainly from south of Taizhou during the most serious pollutants.
关键词
南京 /
烟霾 /
气溶胶污染 /
气象条件 /
轨迹分析
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Key words
Nanjing /
Haze /
Aerosol pollution /
Weather condition /
Trajectory analysis
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参考文献
[1]高歌. 1961\_2005 年中国霾日气候特征及变化分析[J]. 地理学报, 2008, 63（7）: 761-768
[2]范引琪, 李二杰, 范增禄. 河北省1960\_2002年城市大气能见度的变化趋势[J]. 大气科学, 2005, 29（4）: 526-545
[3]范引琪, 李春强. 1980\_2003年京、 津、 冀地区大气能见度变化趋势研究[J]. 高原气象, 2008, 27（6）: 1392-1400
[4]靳利梅, 史军. 上海雾和霾日数的气候特征及变化规律[J]. 高原气象, 2008, 27（增刊）: 138-143
[5]孙燕, 魏建苏, 俞剑蔚. 南京灰霾天气的气候特征分析[J]. 中国人口资源与环境, 2007, 17（5）: 179-182
[6]周宁芳, 李峰, 饶晓琴, 等. 2006 年冬半年我国霾天气特征分析[J]. 气象, 2008, 34（6）: 81-88
[7]Hachfeld B, N Jurgens. Climate patterns and their impact on the vegetation in a fog driven desert: The central Namib Desert in Namibia [J]. Phytocoenologia, 2000, 30(3-4): 567-589
[8]Kerr R A. Climate study unveils climate cooling caused by pollutant haze[J]. Science, 1995, 268(5212): 802
[9]MALM W C. Characteristics and origins of haze in the continental united\|states[J]. Earth\|Science Rev, 1992, 33(1): 1-36
[10]Quinn P K, T S Bates. North American, Asian, and Indian haze similar regional impacts on climate[J]. Geophys Res Lett, 2003, 30(11): 1555-1559
[11]段菁春, 毕新惠, 谭吉华, 等. 广州灰霾期大气颗粒物中多环芳烃粒径的分布[J]. 中国环境科学, 2006, 26(1): 6-10
[12]高枞亭, 张仁健, 苏丽欣. 长春秋冬季大气黑碳气溶胶的特征分析[J]. 高原气象, 2009, 28（4）: 803-807
[13]Cheung H C, T Wang, K Baumann, et al. Influence of regional pollution outflow on the concentrations of fine particulate matter and visibility in the coastal area of southern China[J]. Atmos Environ, 2005, 39: 6463-6474
[14]Tan J H, X H Bi, J C Duan, et al. Seasonal variation of particulate polycyclic aromatichydrocarbons associated with PM10in Guangzhou, China[J]. Atmos Res, 2006, 80(4): 250-262
[15]吴兑, 廖国莲, 邓雪娇, 等. 珠江三角洲霾天气的近地层输送条件研究[J]. 应用气象学报, 2008, 19(1): 1-9
[16]延昊, 矫梅燕, 赵琳娜, 等. 中国北方气溶胶散射和PM10浓度特征[J]. 高原气象, 2008, 27(4): 852-857
[17]郑飞, 张镭, 朱江, 等. 复杂地形城市冬季边界层气溶胶扩散和分布模拟[J]. 高原气象, 2007, 26(3): 532-540
[18]姜金华, 彭新东. 复杂地形上城市冬季大气污染的模拟研究[J]. 高原气象, 2002, 21(1): 1-7
[19]马京津, 高晓清. 华北地区夏季平均水汽输送通量和轨迹的分析[J]. 高原气象, 2006, 25（5）: 893-899
[20]石春娥, 姚叶青, 张平, 等. 合肥市PM10输送轨迹分类研究[J]. 高原气象, 2008, 27(6): 1383-1391
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