青海格尔木大气气溶胶地基激光雷达观测研究
Ground-based Lidar Measurements of Aerosol Vertical Distributions in Golmud,Qinghai
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摘要: 本文利用中国科学院大气物理研究所自行研制的MARMOT (Middle Atmosphere Remote Mobile Observatory in Tibet)激光雷达系统，于2013年8月～2015年5月在青海省格尔木市(36.25°N，94.54°E)开展了准连续夜间气溶胶垂直分布的观测实验，初步获得了青藏高原北部地区上空气溶胶的消光系数反演结果。本文挑选晴朗无云观测时段进行典型个例分析，发现冬季测站上空空气污染程度比夏季和秋季严重。分析发现气溶胶的垂直消光廓线分布与背景天气系统和人类活动都有密切的关系，说明了人类活动对环境气溶胶浓度有非常大的影响。将激光雷达反演的气溶胶消光系数结果与CALIPSO卫星数据进行了对比，两者具有良好的一致性，验证了激光雷达所获数据的可靠性。Abstract: Since August 2013，MARMOT(Middle Atmosphere Remote Mobile Observatory in Tibet) lidar has been deployed in Golmud(36.25°N，94.54°E) ，Qinghai for making nighttime measurements of aerosol vertical distribution．Aerosol data obtained by this ground－based lidar showed good consistency compared with the CALIPSO satellite measurements．The variations of aerosol extinction coefficient were related to the synoptic background，wind speed，as well as to the human activities，indicating that anthropogenic emissions have great influence on ambient aerosol concentration．
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