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

9612518 基林 在这个项目中，将继续测量空气样品中的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。这些数据将有助于更好地估计二氧化碳与陆地生物群和海洋的净交换、海洋光合作用率和大气混合率。这些结果有助于我们更好地了解调节大气中二氧化碳积累的过程，以及调节海洋和陆地生态功能的过程与各种变化因素，特别是气候变化的关系。为了支持测量计划，将开发空气中氧气的绝对标准，以确保稳定的长期校准。将对陆地和海洋有机碳的氧化氧/碳比率进行调查，以改进将氧和二氧化碳地球化学循环联系起来的定量基础。 ***

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. ***