Earth System Research Laboratory Carbon Cycle and Greenhouse Gases Group Flask-Air Sample Measurements of N2O at Global and Regional Background Sites, 1967-Present

The CCGG cooperative air sampling network effort began in 1967 at Niwot Ridge, Colorado. Today, the network is an international effort which includes regular discrete samples from the NOAA ESRL/GML baseline observatories, cooperative fixed sites, and commercial ships. Air samples are collected approximately weekly from a globally distributed network of sites. Samples are analyzed for Carbon Dioxide (CO2), Methane (CH4), Carbon Monoxide (CO), Hydrogen Gas (H2), Nitrous Oxide (N2O), and Sulfur Hexafluoride (SF6); and by INSTAAR for the stable isotopes of CO2 and CH4 and for many volatile organic compounds (VOC) such as ethane (C2H6), ethylene (C2H4) and propane (C3H8). Measurement data are used to identify long-term trends, seasonal variability, and spatial distribution of carbon cycle gases.

CCGG合作空气采样网络项目于1967年在科罗拉多州尼沃特岭启动。如今，该网络已发展为国际性合作项目，其常规离散样本的采集来源包括美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）地球系统研究实验室（Earth System Research Laboratories, ESRL）全球监测实验室（Global Monitoring Laboratory, GML）的基准观测站、合作固定站点以及商业船舶。该全球分布的站点网络约每周采集一次空气样本，样本将针对二氧化碳（Carbon Dioxide, CO₂）、甲烷（Methane, CH₄）、一氧化碳（Carbon Monoxide, CO）、氢气（Hydrogen Gas, H₂）、一氧化二氮（Nitrous Oxide, N₂O）以及六氟化硫（Sulfur Hexafluoride, SF₆）开展分析；此外北极与高山研究所（INSTAAR）还会对二氧化碳和甲烷的稳定同位素，以及乙烷（Ethane, C₂H₆）、乙烯（Ethylene, C₂H₄）、丙烷（Propane, C₃H₈）等多种挥发性有机化合物（Volatile Organic Compounds, VOC）进行检测分析。所获测量数据可用于解析碳循环气体的长期变化趋势、季节变异性与空间分布特征。

搜集汇总

背景与挑战

背景概述

该数据集是NOAA全球温室气体参考网络的一部分，专注于通过Flask-Air样本测量全球和区域背景站点的一氧化二氮（N2O）浓度，时间跨度从1967年至今。数据收集网络覆盖多个站点，包括基线观测站和合作采样点，用于分析N2O的长期趋势、季节变化和空间分布，支持气候研究和排放评估。