Collaborative Research. IPY: Arctic Great Rivers Observatory (Arctic-GRO)

合作研究。

• 批准号: 0732821
• 负责人: James McClelland
• 金额: $ 19.07万
• 依托单位: University of Texas at Austin
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-07-01 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0732821&HistoricalAwards=false
• 关键词: Collaborative; Research.; IPY; Arctic; Great

The Arctic Great Rivers Observatory (Arctic-GRO) project will assess river constituent (chemistry, isotopes, nutrients) fluxes and discharge in the Ob', Yenisey, Lena, Kolyma, Yukon and Mackenzie Rivers. These observations will be used to test hypotheses about the magnitude, controls and ecological significance of these fluxes, and will provide new information on inter-annual variability and trends in the major fluxes of constituents to the Arctic Ocean. By measuring the flux of water and constituents in these key rivers at the junction between the continents and the Arctic Ocean, it is possible to efficiently assess changes occurring across vast regions of the continents that may diagnose environmental change on land, and forecast imminent changes in circulation and biogeochemical processes in the Arctic and North Atlantic oceans. Monitoring the great arctic rivers is an essential component of any comprehensive Arctic Observatory program and is critical for understanding environmental change in the Arctic, a goal of SEARCH. The data collection will represent a pulse of activity within the IPY timeframe and will provide a legacy of data for future investigations. Arctic-GRO is based upon strong scientific collaborations among US, Canadian and Russian scientists. It also represents a major component of the Arctic Circumpolar Coastal Observatory Network (ACCO-Net), an overarching IPY initiative designed to link key coastal erosion monitoring sites established as part of the international Arctic Coastal Dynamics project with major arctic river sampling sites established as part of the NSF Freshwater Integration (FWI) study. The project will link with and extend the Student Partners Project, a science and education effort involving K-12 students and their teachers at each sampling site. Teachers and their students are educated in global change and in turn collect river samples of selected constituents at higher frequencies than would otherwise be possible, thereby improving the science.

北极大河天文台（北极-GRO）项目将评估OB'，Yenisey，Lena，Kolyma，Yukon，Yukon和Mackenzie Rivers的河流组成（化学，同位素，营养素）通量。这些观察结果将用于检验有关这些通量的大小，控制和生态意义的假设，并将提供有关北极海洋主要成分主要助焊剂的新信息。通过测量大陆与北极海之间交界处的这些关键河流中的水和成分的通量，可以有效评估大陆广阔地区的变化，这些变化可能诊断出土地上的环境变化，并预测北极和北极海洋中循环和生物地球化学过程的即将发生变化。监视北极河是任何综合北极天文台计划的重要组成部分，对于理解北极环境变化至关重要，这是搜索的目标。数据收集将代表IPY时间范围内的活动脉冲，并将提供数据的遗产供未来的研究。 Arctic-Gro基于我们之间，加拿大和俄罗斯科学家之间的强大科学合作。它还代表了北极圆形沿海天文台网络（ACCO-NET）的主要组成部分，这是一项旨在将作为国际北极沿海动力学项目的一部分建立的主要沿海侵蚀监测站点与大型北极河流河流采样站点建立的一部分，旨在将作为NSF淡水淡水集成（FWI）的一部分建立。该项目将与学生合作伙伴项目链接并扩展，这是每个抽样网站上涉及K-12学生及其老师的科学和教育工作。教师及其学生接受了全球变化的教育，然后以比以往其他可能的频率更高的频率收集选定成分的河流样本，从而改善了科学。

项目成果

Recent trends in the chemistry of major northern rivers signal widespread Arctic change

• DOI: 10.1038/s41561-023-01247-7
• 发表时间: 2023-08
• 期刊: Nature Geoscience
• 影响因子: 18.3
• 作者: S. Tank;J. McClelland;R. Spencer;A. Shiklomanov;A. Suslova;F. Moatar;R. Amon;L. Cooper;Greg Elias;V. Gordeev;C. Guay;T. Gurtovaya;L. Kosmenko;E. Mutter;B. Peterson;B. Peucker‐Ehrenbrink;P. Raymond;P. Schuster;L. Scott;R. Staples;R. Striegl;M. Tretiakov;A. Zhulidov;N. Zimov;S. Zimov;R. Holmes