基于激光雷达的北京一次典型污染过程分析
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摘要
针对2018年3月9日至14日京津冀地区的一次污染过程,利用在北京及其西南传输通道(保定-石家庄-邢台-新乡)和东南输送通道(天津-沧州-德州-济宁)的地基激光雷达观测网数据和车载激光雷达走航观测数据,并结合各城市空气质量监测站点的数据、气象数据以及HYSPLIT后向轨迹结果对本次北京地区污染过程的形成进行了研究.研究结果表明,本次污染过程是一次典型的区域污染累积和传输过程,并且持续时间较长,影响范围较广.在此次污染过程中,在北京西南输送通道沿线城市存在明显的气溶胶污染气团传输特征,污染气团沿北京西南输送通道由南向北输送导致北京PM2.5浓度快速上升.基于地基激光雷达组网和车载激光雷达走航的联合观测,可有力地支撑京津冀及周边区域对大气污染物跨界传输的联防联控的研判。
A typical air pollution process in Beijing, China was analyzed by ground-based lidar network,vehicle-based lidar, meteorological data, PM2.5 mass concentration and backward trajectory results of Beijing and its surrounding areas, from March 9 to march 14, 2018. The results indicated obviously that the air pollution process was a typical regional pollution accumulation and transmission process, and it had a long duration and wide range of influence. During the air pollution process, there is an obvious characteristic of aerosol mass transmission along the southwest transport pathway of Beijing. The polluted air mass transported from the south to Beijing along the southwest pathway, causing the rapidly rise of PM2.5 mass concentration in Beijing. The observation based on lidar network and vehicle-based lidar, can effectively support the researches of pollutants transmission in Beijing-Tianjin-Hebei and its surrounding areas.
A typical air pollution process in Beijing, China was analyzed by ground-based lidar network,vehicle-based lidar, meteorological data, PM2.5 mass concentration and backward trajectory results of Beijing and its surrounding areas, from March 9 to march 14, 2018. The results indicated obviously that the air pollution process was a typical regional pollution accumulation and transmission process, and it had a long duration and wide range of influence. During the air pollution process, there is an obvious characteristic of aerosol mass transmission along the southwest transport pathway of Beijing. The polluted air mass transported from the south to Beijing along the southwest pathway, causing the rapidly rise of PM2.5 mass concentration in Beijing. The observation based on lidar network and vehicle-based lidar, can effectively support the researches of pollutants transmission in Beijing-Tianjin-Hebei and its surrounding areas.
引文
[1] Zhou Y Y, Ma Y, Zheng J, et al. Pollution Characteristics and Light Extinction Effects of Water-soluble Ions in PM_(2.5)During Winter Hazy Days at North Suburban Nanjing[J]. Environmental Science, 2015, 36(6):1926-1934.
[2] Paasche Al J E. Climate Change 2007:The Physical Science Basis[M]. Cambridge, Cambridge University Press.2007:434-497.
[3] Chow J, Watson J, Mauderly J, et al.Health Effects of Fine Particulate Air Pollution:Lines that Connect[J]. Air Repair, 2006, 56(10):1368-1380.
[4] Chang D, Song Y, Liu B. Visibility trends in six megacities in China 1973-2007[J]. Atmospheric Research, 2009,94(2):161-167.
[5] Che H Z, Zhang X Y, et al. Haze trends over the capital cities of 31 provinces in China, 1981-2005.[J]. Theoretical&Applied Climatology, 2009, 97(3-4):235-242.
[6] Lv L, Liu W, Zhang T, et al. Observations of particle extinction, PM_(2.5), mass concentration profile and flux in north China based on mobile lidar technique[J]. Atmospheric Environment, 2017, 164:360-369.
[7] Zhang J, Chen Z, Lu Y, et al. Characteristics of aerosol size distribution and vertical backscattering coefficient profile during 2014 APEC in Beijing[J]. Atmospheric Environment, 2017, 148:30-41.
[8] Fernald F G. Analysis of atmospheric lidar observations:some comments[J]. Applied Optics, 1984, 23(5):652-653.
[2] Paasche Al J E. Climate Change 2007:The Physical Science Basis[M]. Cambridge, Cambridge University Press.2007:434-497.
[3] Chow J, Watson J, Mauderly J, et al.Health Effects of Fine Particulate Air Pollution:Lines that Connect[J]. Air Repair, 2006, 56(10):1368-1380.
[4] Chang D, Song Y, Liu B. Visibility trends in six megacities in China 1973-2007[J]. Atmospheric Research, 2009,94(2):161-167.
[5] Che H Z, Zhang X Y, et al. Haze trends over the capital cities of 31 provinces in China, 1981-2005.[J]. Theoretical&Applied Climatology, 2009, 97(3-4):235-242.
[6] Lv L, Liu W, Zhang T, et al. Observations of particle extinction, PM_(2.5), mass concentration profile and flux in north China based on mobile lidar technique[J]. Atmospheric Environment, 2017, 164:360-369.
[7] Zhang J, Chen Z, Lu Y, et al. Characteristics of aerosol size distribution and vertical backscattering coefficient profile during 2014 APEC in Beijing[J]. Atmospheric Environment, 2017, 148:30-41.
[8] Fernald F G. Analysis of atmospheric lidar observations:some comments[J]. Applied Optics, 1984, 23(5):652-653.