GreenHouse Gases Concentration - ICOS Level 1 and Level 2 data

Measurement of atmospheric concentration of greenhouse gases (carbon dioxide, methane) performed in compliance with ICOS protocols established for class-2 atmospheric stations (https://www.icos-cp.eu/about/join-icos/process-stations#toc-station-classes-class-1-class-2-associated-stations). Measurements are performed at the ICOS class-2 atmosphere station in Ispra (building 77r). This station is a component of the European Commission Atmospheric Observatory. Near Real-Time (NRT) measurements are Level 1 ICOS data that are not fully quality checked. NRT data is a growing time series starting from the last ICOS data release of Level 2 data, that is from 01/04/2023. Level 2 data are fully quality checked measurements starting from 15/12/2017 till 31/03/2023.本数据集为遵循国际碳观测系统（Integrated Carbon Observation System，ICOS）二级大气站（class-2 atmospheric stations）制定的观测规程开展的温室气体（二氧化碳、甲烷）大气浓度测量工作，相关观测规程可参考链接：https://www.icos-cp.eu/about/join-icos/process-stations#toc-station-classes-class-1-class-2-associated-stations。测量点位位于意大利伊斯普拉（Ispra）的ICOS二级大气站（77r号楼），该站点为欧盟委员会大气观测站的组成部分。 近实时（Near Real-Time，NRT）测量数据属于ICOS Level 1 数据，尚未完成全面质量核查。该数据集为持续更新的时间序列，起始于ICOS Level 2 数据的最新一次发布节点，即2023年4月1日。ICOS Level 2 数据为经全面质量核查的测量数据集，时间覆盖范围为2017年12月15日至2023年3月31日。