NOAA Atmospheric Carbon Dioxide Mole Fractions from American Samoa Observatory

This data set contains continuous measurements of atmospheric carbon dioxide mole fractions from the NOAA/ESRL observatory at American Samoa. Data are expressed in hourly, daily and monthly averages in units of micromole/mole for the time period of 1976-2013. Data are archived at the NOAA National Climatic Data Center (NCDC), but are produced and available from NOAA Earth System Research Laboratory (ESRL).本数据集收录了美属萨摩亚地区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 Laboratory, ESRL）观测站获取的大气二氧化碳摩尔分数连续实测数据。数据集涵盖1976年至2013年时段的小时、日及月平均数据，单位为微摩尔每摩尔（micromole/mole）。该数据集存档于NOAA国家气候数据中心（National Climatic Data Center, NCDC），但由NOAA地球系统研究实验室（ESRL）生成并对外提供。