中国第36次南极科学考察（2019-2020年）中山站相干多普勒测风激光雷达观测数据

极区大气作为整个地球大气系统中的一个重要组成部分，其温度和风场的结构与变化关系到全球的大气系统的运动，也关系到极地环境下海-气-冰不同圈层相互作用的基本过程，对全球气候变化有深远的影响。因此，开展极区中低层大气参数的现场观测研究对整个大气科学的发展具有重要的意义。
围绕极区中低层大气的关键参量观测和前沿科学问题探索研发核心技术，中国第36次南极科学考察度夏期间在中山站建成了一套适应极区极端环境观测的中低层大气激光雷达探测系统，该探测系统包括：转动拉曼激光雷达、瑞利／米散射激光雷达模块和相干多普勒测风激光雷达。
相干多普勒测风激光雷达在2019年12月31日完成南极中山站现场系统优化，正式进入观测阶段。
1.测量仪器
相干多普勒测风激光雷达
2.观测方法和所获观测资料
相干多普勒测风激光雷达基于多普勒频移原理，通过发射激光的大气回波信号与本振激光的拍频（相干）实现对大气风场的测量，获取边界层大气风场精细结构。
3.观测区域
南极中山站边界层。

As a critical component of the global Earth atmospheric system, the structure and variations of temperature and wind fields in the polar atmosphere are closely related to global atmospheric circulation, as well as the fundamental processes of interactions among the sea, atmosphere and ice spheres in polar environments, exerting profound impacts on global climate change.
Therefore, conducting in-situ observational research on mid-to-lower atmospheric parameters in polar regions holds great significance for the overall development of atmospheric science.

Focusing on the observation of key parameters of the polar mid-to-lower atmosphere and the development of core technologies for exploring cutting-edge scientific issues, the 36th Chinese Antarctic Scientific Expedition team constructed a mid-to-lower atmospheric lidar detection system adapted to extreme polar environmental observations at Zhongshan Station during the summer field season. This detection system includes: rotational Raman lidar, Rayleigh/Mie scattering lidar module, and coherent Doppler wind lidar.

The coherent Doppler wind lidar completed on-site system optimization at Zhongshan Station, Antarctica on December 31, 2019, and officially entered the observation phase.

1. Measuring Instruments
Coherent Doppler Wind Lidar

2. Observation Methods and Obtained Observation Data
The coherent Doppler wind lidar is based on the Doppler frequency shift principle, measuring the atmospheric wind field by detecting the beat frequency (coherence) between the atmospheric echo signal of the transmitted laser and the local oscillator laser, thus acquiring the fine structure of the boundary layer atmospheric wind field.

3. Observation Area
Boundary layer of Zhongshan Station, Antarctica.

搜集汇总

背景与挑战

背景概述

该数据集包含2019-2020年中国第36次南极科学考察期间，中山站相干多普勒测风激光雷达观测的边界层大气风场数据，数据量4.4GB，用于研究极区大气风场结构及其气候影响。