Atmospheric Oxygen Variability in Relation to Annual to Decadal Variations in Terrestrial and Marine Ecosystems

9612518在这项计划中，将继续测量空气样本中分子氧和二氧化碳的浓度。这些样本是在世界各地的一系列基线地点收集的。这些数据将改进对二氧化碳与陆地生物群和海洋的净交换、海洋光合作用速率和大气混合速率的估计。需要这些结果来增进我们对大气中二氧化碳积累的调节过程以及与各种变化因素，特别是气候变化有关的海洋和陆地生态功能的调节过程的理解。为了支持测量计划，将制定空气中氧的绝对标准，以确保长期稳定的校准。将对陆地有机碳和海洋有机碳的氧化氧/碳比率进行调查，以改善将氧和二氧化碳的地球化学循环联系起来的量化基础。***

9612518 Keeling In this project, measurements of the concentration of molecular oxygen and carbon dioxide in air samples will be continued. The samples are collected at a series of baseline sites around the world. The data will lead to improved estimates of the net exchange of carbon dioxide with land biota and the oceans, of marine photosynthesis rates, and of atmospheric mixing rates. These results are needed to improve our understanding of the processes regulating the buildup of carbon dioxide in the atmosphere, and of the processes regulating marine and terrestrial ecological functions in relation to various agents of change, especially climatic changes. In support of the measurement program, absolute standards for oxygen in air will be developed in order to ensure stable long-term calibration. A survey of the oxidative oxygen/carbon ratios of terrestrial and marine organic carbon will be conducted, in order to improve the quantitative basis for linking the oxygen and carbon dioxide geochemical cycles. ***