ICCR: Long-term Quality Assured Atmospheric Carbon Dioxide (CO2) Measurements

该项目涉及斯克里普斯海洋学研究所(SIO)和美国国家海洋和大气管理局(NOAA)的气候监测和诊断实验室(CMDL)之间的合作，以创建一个单一的标尺来报告两个实验室的大气二氧化碳(CO2)浓度，以便可以在没有仪器偏差的情况下比较二氧化碳数据。自1956年以来，SIO一直保持着一项全球范围的测量大气二氧化碳丰度的计划，使用恒容汞柱压力计(CMM)用二级标准进行校准。1972年至1995年，世界气象组织指定SIO为二氧化碳中央实验室，负责维护全球二氧化碳测量的标准参考物质(SRM)。1995年，这一称号被转移到CMDL。自这次移交以来，这两个机构的校准标准一直没有协调一致，这一协调是这一努力的重点。NOAA将支持CMDL部分。这项工作的更广泛影响将是提高大气二氧化碳浓度的几个时间序列测量的准确性。

This project involves a collaboration between the Scripps Institution of Oceanography (SIO) and the Climate Monitoring and Diagnostics Laboratory (CMDL) of the National Oceanic and Atmospheric Administration (NOAA) to create a single scale for reporting the concentration of atmospheric carbon dioxide (CO2) from the two laboratories so that the CO2 data can be compared without instrumental bias. Since 1956, SIO has maintained a global-scale program to measure the abundance of atmospheric CO2, calibrated with secondary standards using a constant-volume mercury-column manometer (CMM). From 1972 to 1995, the World Meteorological Organization designated SIO as the Central CO2 Laboratory for maintaining standard reference materials (SRM) for CO2 measurements worldwide. In 1995 this designation was transferred to CMDL. The calibration standards of the two institutions have not been reconciled since this transfer and this reconciliation is the focus of this effort. NOAA will support the CMDL part. The broader impacts of this work will be improved accuracy of several time-series measurements of atmospheric concentrations of carbon dioxide.