A regional model of European aerosol transport: Evaluation with sun photometer, lidar and air quality data

A regional model of European aerosol transport: Evaluation with sun photometer, lidar and air quality data
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欧洲气溶胶输送的区域模型:利用太阳光度计、激光雷达和空气质量数据进行评估

DOI:
10.1016/j.atmosenv.2011.09.029
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发表时间:
2012
影响因子:
5
通讯作者:
V. Rizi
V. Rizi
中科院分区:
环境科学与生态学2区
文献类型:
--
作者:
J. I. Tegen;I. Mattis;R. Wolke;L. Alados Arboledas;A. Apituley;D. Balis;F. Barnaba;A. Chaikovsky;M. Sicard;G. Pappalardo;A. Pietruczuk;D. Stoyanov;F. Ravetta;V. Rizi

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在欧洲范围内的气溶胶传输模拟与区域传输模式COSMO-MUSCAT两个不同的时间段,2006年7月19日至26日和2007年2月16日至26日。模拟的PM2.5,后向散射剖面和气溶胶光学厚度(AODs)进行了比较,观测,显示出良好的协议的大小,形状和日常的变化。在这两个时间段内,在中欧发现了最大的AOD(>0.4),在海洋上发现了最小的AOD(<0.13),对应于表面附近的高浓度(PM2.5> 10 μg m−3)和低浓度(PM2.5< 4.0 μg m−3)区域。利用EARLINET地面网络和CALIPSO卫星反演的激光雷达测量值对垂直气溶胶分布进行了评价。区域模式较好地反映了夏季和冬季大气环流的垂直分布特征和差异。在0.0至2.5 km高度,观测到的(天基激光雷达)和模拟的后向散射系数之间的平均差异为−5.0 × 10− 7至−2.0 × 10− 7 m − 1 sr − 1(夏季情况)和−2.3 × 10− 6至1.0 × 10− 6 m − 1 sr −1(冬季情况)。对于在这项研究中进行了调查的情况下,在横向模型边界的垂直分布的不同处方导致在模型区域内部的气溶胶分布只有很小的差异。
Aerosol transport simulations within Europe were performed with the regional transport model COSMO-MUSCAT for two different time periods, July 19–26, 2006 and February 16–26, 2007. Simulated PM2.5, backscatter profiles and aerosol optical depths (AODs) were compared to observations, showing good agreements in magnitude, shape and day-to-day variations. Maximum AODs (>0.4) were found over Middle Europe and minimum AODs (<0.13) over the ocean during both time periods, corresponding to regions of high (PM2.5> 10 μg m−3) and low (PM2.5< 4.0 μg m−3) concentration near the surface. Vertical aerosol distributions were evaluated with lidar measurements from the EARLINET ground network and CALIPSO satellite retrievals. The characteristic vertical distribution and the differences for the summer and the winter cases were represented well by the regional model. Mean differences between −5.0 × 10−7to−2.0 × 10−7m−1sr−1(summer case) and −2.3 × 10−6to 1.0 × 10−6m−1sr−1(winter case) from 0.0 to 2.5 km altitude were found between observed (space-based lidar) and simulated backscatter coefficients. For the cases that were investigated in this study different prescriptions of the vertical distribution at the lateral model boundaries resulted in only small differences in aerosol distributions within the interior of the model region.
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