An Assessment of Pseudo-Operational Ground-Based Light Detection and Ranging Sensors to Determine the Boundary-Layer Structure in the Coastal Atmosphere
An Assessment of Pseudo-Operational Ground-Based Light Detection and Ranging Sensors to Determine the Boundary-Layer Structure in the Coastal Atmosphere
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DOI：
10.1155/2012/929080
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发表时间：
2012-01-01
影响因子：
2.9
通讯作者：
O'Dowd, Colin D.
中科院分区：
文献类型：
--
作者：
Milroy, Conor;Martucci, Giovanni;O'Dowd, Colin D.
在爱尔兰梅斯黑德的沿海地点，通过三个共置的远程传感器、一个激光雷达和两个天花板，探测到了21个边界层结构。数据是在2009年6月8日至28日在爱尔兰梅斯黑德的GAW大气站举行的ICOS现场活动中收集的。这项研究分两步进行，其基础是：(I)对三个激光传感器，即LESPOPE ALS300激光雷达、Vaisala CL31激光测深仪和Jenoptik CHM15K激光测深仪的背向散射轮廓进行相互比较；(Ii)并与2009年6月8日至15日期间进行的23次射电探测的背向散射轮廓进行比较。将独立于传感器的时间高度跟踪算法应用于每个仪器恢复的后向散射轮廓，以确定MACE头部上方的磁层的解耦结构。激光雷达和天花板反演层高与射电测深的温度分布进行了比较。远程数据和现场数据之间的比较证明了温度和气溶胶后向散射剖面之间存在内在联系，并在今后的研究中开启，重点是进一步评估激光雷达-激光测距仪的比较。
Twenty-one cases of boundary-layer structure were retrieved by three co-located remote sensors, One LIDAR and two ceilometers at the coastal site of Mace Head, Ireland. Data were collected during the ICOS field campaign held at the GAW Atmospheric Station of Mace Head, Ireland, from 8th to 28th of June, 2009. The study is a two-step investigation of the BL structure based on (i) the intercomparison of the backscatter profiles from the three laser sensors, namely the Leosphere ALS300 LIDAR, the Vaisala CL31 ceilometer and the Jenoptik CHM15K ceilometer; (ii) and the comparison of the backscatter profiles with twenty-three radiosoundings performed during the period from the 8th to the 15th of June, 2009. The sensor-independent Temporal Height-Tracking algorithm was applied to the backscatter profiles as retrieved by each instrument to determine the decoupled structure of the BL over Mace Head. The LIDAR and ceilometers-retrieved BL heights were compared to the radiosoundings temperature profiles. The comparison between the remote and the in-situ data proved the existence of the inherent link between temperature and aerosol backscatter profiles and opened at future studies focusing on the further assessment of LIDAR-ceilometer comparison.