MOSAiC: Wind profiles from Galion G4000 Lidar Wind Profiler - Version 3

Wind profiles from a Galion G4000 Doppler lidar for the international Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) project, derived from conical scans at 30 degree and 50 degree beam elevation angles. The University of Leeds participation in the project- MOSAiC Boundary Layer -was funded by the Natural Environment Research Council (NERC, grant: NE/S002472/1) and involved instrumentation from the Atmospheric Measurement and Observations Facility of the UK's National Centre for Atmospheric Science (NCAS AMOF). This was a year-long project on the German icebreaker Polarstern to study Arctic climate focused on measurements of atmospheric boundary layer dynamics and turbulent structure. The Galion wind profiler provides high resolution (~15m vertical and 5 minute temporal) measurements of wind profiles. Data are only available where sufficient particles are available to backscatter the laser light - in the clean arctic environment, this requires cloud or precipitation. This is version 3 of this dataset which corrects an error in the implementation of the correction of the lidar azimuth when the scanning head slipped at very low temperatures.

本数据集为国际北极气候多学科漂流观测站（Multidisciplinary drifting Observatory for the Study of Arctic Climate，MOSAiC）项目的Galion G4000多普勒激光雷达（Doppler lidar）风廓线数据，由30度与50度波束仰角的圆锥扫描获取。
利兹大学参与该项目的“MOSAiC边界层”子课题，该工作由英国自然环境研究委员会（Natural Environment Research Council，NERC，资助编号：NE/S002472/1）资助，所用仪器来自英国国家大气科学中心大气测量与观测设施（National Centre for Atmospheric Science Atmospheric Measurement and Observations Facility，NCAS AMOF）。
该项目依托德国破冰船“极星号（Polarstern）”开展，为期一年，以北极气候研究为核心，重点观测大气边界层动力学与湍流结构。
本次使用的Galion风廓线仪可提供高分辨率风廓线观测数据，其垂直分辨率约15米，时间分辨率约5分钟。
仅当存在足够颗粒物以实现激光后向散射时，方可获取有效数据；在洁净的北极环境中，这一条件需依托云或降水达成。
本数据集为第3版，修复了扫描头在极低温环境下打滑时，激光雷达方位角校正流程实施错误的问题。