中国第36次南极科学考察（2019-2020年）中山站转动拉曼激光雷达观测数据

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。 转动拉曼激光雷达在2020年2月6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 转动拉曼激光雷达 2.观测方法和所获观测资料 转动拉曼激光雷达采用大功率激光器发射532 nm 激光，通过望远镜接收散射回波信号后，利用分光系统将回波信号依次导向高阶拉曼通道、低阶拉曼通道和弹性通道，并采用全新的准单支谱提取技术和模拟/光子计数双模式数据采集技术，实现对流层温度的全天时高精度探测。 3.观测区域 南极中山站对流层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 linked to global atmospheric circulation, as well as the fundamental processes of air-sea-ice multi-sphere interactions in polar environments, exerting far-reaching impacts on global climate change. Therefore, carrying out in-situ observational studies on mid-to-lower tropospheric atmospheric parameters over polar regions holds significant importance for the overall development of atmospheric science. Focusing on key parameter observations of the polar mid-to-lower troposphere and the exploration of cutting-edge scientific issues to develop core technologies, a mid-to-lower atmospheric lidar detection system adapted to the extreme polar environment was deployed at Zhongshan Station during the summer field campaign of the 36th Chinese Antarctic Research Expedition. This detection system comprises three parts: rotational Raman lidar, Rayleigh/Mie scattering lidar module, and coherent Doppler wind lidar. The rotational Raman lidar completed in-situ system optimization at Zhongshan Station, Antarctica on February 6, 2020, and officially entered the operational observation phase. 1. Measuring Instruments Rotational Raman Lidar 2. Observation Methods and Acquired Observation Data The rotational Raman lidar utilizes a high-power laser to emit 532 nm laser beams. After receiving scattered echo signals via a telescope, it directs the echo signals to the high-order Raman channel, low-order Raman channel, and elastic channel sequentially through a spectroscopic system. By adopting a novel quasi-single-line extraction technology and dual-mode analog/photonic counting data acquisition technology, it achieves all-sky high-precision detection of tropospheric temperature. 3. Observation Area Troposphere over Zhongshan Station, Antarctica

搜集汇总

背景与挑战

背景概述

该数据集是中国第36次南极科学考察期间，在中山站使用转动拉曼激光雷达观测的对流层温度数据，覆盖时间为2020年2月6日至6月30日，数据量为11.6GB，采用条件共享方式，旨在支持极区大气科学研究和气候变化分析。数据集通过高精度探测技术获取对流层温度信息，为南极大气环境研究提供关键观测资料。