CH4 and CO2 IPDA Lidar Measurements During the Comet 2018 Airborne Field Campaign
CH4 and CO2 IPDA Lidar Measurements During the Comet 2018 Airborne Field Campaign
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2018 年彗星机载现场活动期间的 CH4 和 CO2 IPDA 激光雷达测量
DOI：
10.1051/epjconf/202023703005
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
the CoMet team
中科院分区：
文献类型：
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作者：
A. Amediek;C. Büdenbender;G. Ehret;C. Kiemle;M. Quatrevalet;M. Wirth;S. Wolff;H. Bovensmann;A. Butz;M. Galkowski;C. Gerbig;P. Jöckel;J. Marshall;J. Necki;K. Pfeilsticker;A. Roiger;J. Swolkien;M. Zöger;the CoMet team
安装在德国研究飞机HALO上的集成路径差分吸收（IPDA）激光雷达CHARM-F测量飞机下方和沿着飞行轨迹的温室气体（GHG）的加权垂直柱，旨在实现高精度和精确度。将在2018年春季进行的CoMet现场活动期间展示部署结果，主要关注欧洲甲烷排放的主要热点之一：波兰的上西里西亚煤炭盆地（USCB）。第一次分析表明，20公里平均值的测量精度低于0.5%，偏差也很低，这是通过与现场仪器进行比较来评估的。测量飞行的目的是捕捉个别的甲烷和二氧化碳羽流，例如煤矿通风和燃煤发电厂，分别，但也测量大规模和区域规模的温室气体梯度，并提供与总碳柱观测网络（TCCON）的比较。许多其他不同的机载和陆基仪器补充了激光雷达测量，为模型分析提供了全面的数据集。CHARM-F还充当MERLIN的空中演示器，MERLIN是由德国和法国航天局、德国航天中心和法国国家空间研究中心进行的“甲烷远程激光雷达使命”，预计将于2024年左右发射。在这种情况下，机载激光雷达数据对于使命支持（例如算法开发和改进）同样重要，此外，CoMet使命也是MERLIN验证准备的重要步骤。
Installed onboard the German research aircraft HALO, the integrated-path differential-absorption (IPDA) lidar CHARM-F measures weighted vertical columns of both greenhouse gases (GHG) below the aircraft and along its flight track, aiming at high accuracy and precision. Results will be shown from the deployment during the CoMet field campaign that was carried out in spring 2018, with its main focus on one of the major European hot spots in methane emissions: the Upper Silesian Coal Basin (USCB) in Poland. First analyses reveal a measurement precision of below 0.5% for 20-km averages and also low bias, which was assessed by comparison with in-situ instruments. The measurements flights were designed to capture individual CH4and CO2plumes from e.g. coal mine venting and coal-fired power plants, respectively, but also to measure large and regional scale GHG gradients and to provide comparisons with the Total Carbon Column Observing Network (TCCON). Many other different instruments, both airborne and ground-based, complemented the lidar measurements to provide a comprehensive dataset for model analyses. CHARM-F also acts as the airborne demonstrator for MERLIN, the “Methane Remote Lidar Mission”, conducted by the German and French space agencies, DLR and CNES, with launch foreseen in ~ 2024. In this context, the airborne lidar data are likewise important for mission support such as for e.g. algorithm development and improvement and, moreover, the CoMet mission was also an important step for MERLIN validation preparation.