Preparation and Distribution of DOC Consensus Reference Materials

海洋中的溶解有机碳（DOC）是全球碳循环的一部分。DOC通过与大气中二氧化碳的联系与地球气候系统相互作用。跟踪DOC需要全球许多海洋实验室的合作。要确保所有这些实验室都能进行准确的DOC测量，就需要每个实验室都能获得国际协议规定的DOC浓度的标准化海水样本。该奖项资助迈阿密大学继续开展共识参考物质（CRM）项目，该项目始于1998年，旨在支持国际海洋化学团体对溶解有机碳进行一致、高质量的测量。随着这项工作的继续，美国和国际社会可以对一个主要的海洋碳库进行一致的测量，并提高社会评估海洋碳循环变化和海洋在气候变化中的作用的能力。随着国际上对海洋碳循环研究的持续努力，现有的CRM计划为全球可比的海洋DOC测量提供了必要的基准。来自佛罗里达海峡深处的水（约42 μ mol/kg DOC）将被收集，装入安瓿瓶，并分发给美国和国际社会。在该计划期间，大约228,000瓶参考水已分发给43个国家的约240个美国和国际实验室，目前的速度约为23,000瓶/年。随着参考物质项目第七个三年支持期的继续，含有生物难降解溶解有机碳和低碳参考水的深海水的分布将继续帮助社区研究海洋中溶解有机物的分析工作。一个网站提供直接和方便的链接到越来越多从全球海洋收集的DOC数据。该奖项反映了美国国家科学基金会的法定使命，并通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

Dissolved organic carbon (DOC) in the ocean is part of the global carbon cycle. DOC interacts with the Earth's climate system through its connection to carbon dioxide in the atmosphere. Keeping track of DOC requires the cooperation of many marine laboratories worldwide. Making sure that all of these laboratories are making accurate DOC measurements requires that each can access a standardized sample of seawater for which the DOC concentration is set by international agreement. This award funds the University of Miami to continue a consensus reference material (CRM) program that was first developed in 1998 in support of consistent, high quality measurements of dissolved organic carbon by the international ocean chemistry community. With continuation of this work, the US and international communities can make consistent measurements of a major marine carbon reservoir and advance society's ability to assess changes in the marine carbon cycle and the role of the ocean in climate change.With continued strong international efforts to investigate the marine carbon cycle, the existing CRM program provides the necessary benchmark for globally comparable marine DOC measurements. Water from the deep Florida Strait (approximately 42 umol/kg DOC) will be collected, placed in ampoules, and distributed to the US and international community. Over the time period of this program, approximately 228,000 vials of reference waters have been distributed to approximately 240 US and international laboratories in 43 nations, currently at a rate of about 23,000 vials/year. With continuation of the reference material program for a seventh 3-year period of support, distribution of deep ocean water containing biologically refractory dissolved organic carbon and low carbon reference water will continue to aid the analytical work of the community studying dissolved organic matter in the ocean. A website is maintained that provides direct and convenient links to a growing number of DOC data collected from the global ocean.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.