Methane Isotopes in South Pole Firn Air, 2008

This data set contains depth profiles for delta carbon-13 (δ13C) and delta deuterium (δD) of methane (CH₄) in South Pole firn air. The investigators obtained air samples from two boreholes during December 2008 and January 2009, and subsequently determined isotope ratios at 18 depths. The profiles represent a roughly 100-year history of the isotopic composition of CH₄ at South Pole Station (no depth-age model provided).

Data are available via FTP as an ASCII text file (.txt) and a Microsoft Excel file (.xlsx).

本数据集收录了南极点粒雪层空气（firn air）中甲烷（CH₄）的碳-13同位素比值（δ¹³C）与氘同位素比值（δD）的深度剖面序列。研究团队于2008年12月至2009年1月期间，从两个钻孔中采集空气样本，后续对18个深度点位的样本完成了同位素比值测定。该剖面序列大致反映了南极点站区域甲烷同位素组成近百年的变化历程，本次数据集未附带深度年代模型。
数据集可通过文件传输协议（File Transfer Protocol, FTP）获取，提供的格式为ASCII文本文件（.txt）与微软Excel（Microsoft Excel）表格文件（.xlsx）。