| 南京北郊2007年10～12月大气气溶胶吸收和散射特性的观测 |
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| 引用本文： | 陈宇,银燕,钱凌,王巍巍,严家德,陈晨.南京北郊2007年10～12月大气气溶胶吸收和散射特性的观测[J].气候与环境研究,2009,14(6):613-620. |
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| 作者姓名： | 陈宇 银燕 钱凌 王巍巍 严家德 陈晨 |
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| 作者单位： | 南京信息工程大学大气物理与大气环境重点实验室,南京,210044 |
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| 基金项目： | 国家重点研究发展计划项目2006CB403706和江苏省自然科学基金资助项目BK2006226 |
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| 摘 要： | 通过对南京北郊2007年10～12月大气气溶胶吸收和散射系数的连续观测,分析了该地区大气气溶胶吸收和散射特性在不同天气状况下的演变规律.结果发现:霾日状况下大气气溶胶吸收和散射系数日变化剧烈,非霾日次之,雾日变化较稳定;在00时(北京时间,下同)至08时霾日气溶胶吸收和散射系数与雾日相差不大,而在08时至24时则雾日明显大于霾日;非霾日气溶胶吸收和散射系数最小;降水使得大气气溶胶吸收和散射系数明显降低.
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| 关 键 词： | 气溶胶 光声黑碳仪 吸收系数 散射系数 霾 雾 |
Observation of the Absorption and Scattering Coefficients of Atmospheric Aerosols in the North Suburb of Nanjing from October to December 2007 |
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| CHEN Yu,YIN Yan,QIAN Ling,WANG Weiwei,YAN Jiade and CHEN Chen.Observation of the Absorption and Scattering Coefficients of Atmospheric Aerosols in the North Suburb of Nanjing from October to December 2007[J].Climatic and Environmental Research,2009,14(6):613-620. |
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| Authors: | CHEN Yu YIN Yan QIAN Ling WANG Weiwei YAN Jiade and CHEN Chen |
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| Abstract: | Based on the observation of absorption coefficients and scattering coefficients of the atmospheric aero-sols during October to December in 2007 in the north suburb of Nanjing, the characteristics of absorption and scat-tering coefficients under different meteorological conditions are analyzed. The results indicate that the diurnal varia-tions of the absorption and scatting coefficients of atmospheric aerosols are the most significant in hazy days, fol-lowed by that in non-hazy days, and the least pronounced in fog days. It is also found that the difference in absorp-tion coefficient and scattering coefficient between hazy days and fog days is not significant from 0000 LST to 0800 LST, but the reverse is true for the measurements from 0800 LST to 2400 LST (both the parameters are larger in fog days than in hazy days),and that the absorption and scattering coefficients are the smallest in non-hazy days.The results also show that both the absorption and scattering coefficients are remarkably reduced due to precipitation |
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| Keywords: | aerosol photoacoustic soot spectrometer absorption coefficient scattering coefficient haze fog |
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