GISP2 (D Core) Methane Concentration Data

This ice core data is archived at the World Data Center for Paleoclimatology and is available through the Ice Core Data Gateway. The data includes methane data from the Greenland Ice Sheet Project 2 (GISP2). GISP2 is an ice core project that drilled through the Greenland ice sheet and 1.55 meters into bedrock. The ice core is 3053.44 meters in depth, the deepest ice core recovered in the world at the time. The ice core was completed in 1993 after five years of drilling. Methane concentrations were determined by GC-FID using standards calibrated by NOAA CMDL. The gas age time scales and analytical techniques are described in further detail in the publication.本冰芯数据存档于古气候学世界数据中心（World Data Center for Paleoclimatology），可通过冰芯数据网关（Ice Core Data Gateway）获取。该数据集包含格陵兰冰芯计划2号（Greenland Ice Sheet Project 2, GISP2）的甲烷数据。格陵兰冰芯计划2号是一项钻穿格陵兰冰盖并深入基岩1.55米的冰芯钻探项目。该冰芯总深度达3053.44米，为当时全球已获取的最深冰芯。本冰芯历经五年钻探，于1993年完成。 甲烷浓度通过气相色谱-火焰离子化检测器（GC-FID）测定，采用由美国国家海洋和大气管理局气候监测与诊断实验室（NOAA CMDL）校准的标准物质。气体年龄时间标尺及分析技术的详细信息可参见相关发表文献。