Measurements of surface aerosol optical properties in winter of Shanghai
Measurements of surface aerosol optical properties in winter of Shanghai
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上海冬季地表气溶胶光学特性测量
DOI：
10.1016/j.atmosres.2012.02.008
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发表时间：
2012-06
影响因子：
5.5
通讯作者：
Zhu, Zhaoqin
中科院分区：
文献类型：
--
作者：
Xu, Junwei;Tao, Jun;Zhang, Renjian;Cheng, Tiantao;Leng, Chunpeng;Chen, Jianmin;Huang, Guanghan;Li, Xiang;Zhu, Zhaoqin
2010年12月至2011年3月，对上海市某城区大气气溶胶光学特性进行了连续观测，并分析了气溶胶的散射系数（σscat）、吸收系数（σabs）和单次散射系数（SSA）。在整个期间，平均σscat、σabs和SSA分别为293 Mm −1、66 Mm − 1和0.81。σ scat和σ在12月较高，而在3月相对较低，SSA与之相反。σ散射和σ吸收系数的日变化呈明显的双峰型：交通高峰期8：00 LT最大值为319，76 Mm − 1，20：00 LT次最大值为280，71 Mm − 1; SSA也呈双峰型，13：00 LT最大值为0.85，4：00 LT次最大值为0.82; σ散射和σ吸收系数与大气能见度呈明显的负相关。PM2.5和黑碳是大光学参数的主要贡献者，因为它们的浓度在灰霾期间比清洁天高2倍。σ scat和σ abs在东北风将“干净”的黄海空气带到观测点时数值较低，而在北方或西北方向的气团经过大陆或/和工业区时数值较高，表明不同气溶胶来源对气溶胶光学性质的影响。
Aerosol optical properties were continuously measured at an urban site in Shanghai of China from December 2010 to March 2011, and aerosol scattering (σscat) and absorption (σabs) coefficients and single scattering albedo (SSA) were examined. During the entire period, mean σscat, σabs, SSA were 293Mm−1, 66Mm−1and 0.81, respectively. Higher σscatand σabsoccurred in December while relatively lower values were observed in March, and SSA was just opposite to them. σscatand σabscoefficients behaved an apparent bi-peak pattern in diurnal variation: maxima of 319, 76Mm−1at 8:00 LT during traffic rush hours and sub-maxima of 280, 71Mm−1at 20:00 LT. SSA also behaved a bi-peak diurnal cycle with maximum 0.85 at 13:00 LT and sub-maximum 0.82 at 4:00 LT. σscatand σabscoefficients showed a clear negative correlation with atmospheric visibility. PM2.5and black carbon were major contributors to large optical parameters because their concentrations were 2 times higher during haze episode than in clean days. σscatand σabswere low in magnitude when northeasterly winds bring “clean” air from the China Yellow Sea arriving the observation site, and were relatively high when air masses from the north or northwest pass through continental areas or/and industrial regions, indicating impacts of various aerosol origins on aerosol optical properties.
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影响因子：
10.4
作者：
van Donkelaar A;Martin RV;Brauer M;Kahn R;Levy R;Verduzco C;Villeneuve PJ
通讯作者：
Villeneuve PJ
影响因子：
--
作者：
B. Magi;P. Hobbs;B. Schmid;J. Redemann
通讯作者：
B. Magi;P. Hobbs;B. Schmid;J. Redemann
影响因子：
6.3
作者：
Jianzhong Xu;LI Chengcai;H. Shi;Q. He;L. Pan
通讯作者：
Jianzhong Xu;LI Chengcai;H. Shi;Q. He;L. Pan
使用 CARSNET 测量验证中国 MODIS 气溶胶光学深度产品
影响因子：
5
作者：
Xie Yong;Zhang Yan;Xiaoxiong Xiong;John J. Qu;Che Huizheng
通讯作者：
Che Huizheng
影响因子：
--
作者：
T. Eck;B. Holben;D. Ward;O. Dubovik;J. Reid;A. Smirnov;M. Mukelabai;N. C. Hsu;N. O'Neill;I. Slutsker
通讯作者：
T. Eck;B. Holben;D. Ward;O. Dubovik;J. Reid;A. Smirnov;M. Mukelabai;N. C. Hsu;N. O'Neill;I. Slutsker