应用光学, 2013, 34 (3): 507, 网络出版: 2013-10-23
青藏高原对流层气溶胶的激光雷达监测与研究
Monitoring and study of tropospheric aerosol by lidar over Tibet plateau
青藏高原 激光雷达 对流层气溶胶 消光系数 时空分布 Qinghai-Tibet plateau lidar tropospheric aerosol extinction coefficient time-space distribution
摘要
运用激光雷达方程和Fernald方法,对西藏那曲地区和北京地区对流层气溶胶的微脉冲激光雷达(MPL)探测数据进行时空反演和比较,结果表明:气溶胶散射比廓线有着较为相似的结构分布,分层锯齿结构非常明显,主要包括贴地层、气溶胶混合层和气溶胶对流层。那曲测站上空气溶胶散射比在无云条件下最大值基本上保持在2.0左右;在测站上空均存在密度较大且较厚的积云;夏季的混合层或残留层(浅蓝色部分)高度抬高;夏季对流层低层积云的云量和积云出现的概率较冬季要少。
Abstract
Qinghai-Tibet plateau is famous for the name of the third pole of the earth. The aerosol vertical scattering ratio profiles and extinction coefficient time-space distribution at Naqu prefecture and Beijing prefecture were shown and compared. The data shows that: the similar multi-layered zigzag vertical structure of aerosol extinction coefficient distribution exists in the day and night time; the layers include close ground layer, mixed layer and troposphere. The maximum value of aerosol scattering ratio remains at 2.0 under cloud-free conditions. Because of the vapor cycle, cumulus is existed over the prefecture most of the time, and presence probability of cumulus in summer is less than in winter.
杨辉, 李新建, 陈培彬, 宗军君, 刘剑, 刘文清. 青藏高原对流层气溶胶的激光雷达监测与研究[J]. 应用光学, 2013, 34(3): 507. YANG Hui, LI Xin-jian, CHEN Pei-bin, ZONG Jun-jun, LIU Jian, LIU Wen-qing. Monitoring and study of tropospheric aerosol by lidar over Tibet plateau[J]. Journal of Applied Optics, 2013, 34(3): 507.