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.

北极大河观测站（Arctic- gro）项目将评估奥博河、叶尼塞河、莱拿河、科雷马河、育空河和麦肯齐河的河流组成（化学、同位素、营养物）通量和流量。这些观测结果将用于检验关于这些通量的大小、控制和生态意义的假设，并将提供关于各组分向北冰洋的主要通量的年际变化和趋势的新信息。通过测量大陆和北冰洋交界处这些主要河流的水通量和成分，可以有效地评估大陆广大地区发生的变化，这些变化可以诊断陆地上的环境变化，并预测北极和北大西洋海洋环流和生物地球化学过程即将发生的变化。监测北极大河是任何综合性北极观测项目的重要组成部分，也是了解北极环境变化的关键，这也是SEARCH的目标之一。数据收集将代表国际极地年时间框架内的活动脉搏，并将为今后的调查提供数据遗产。Arctic-GRO基于美国、加拿大和俄罗斯科学家之间强有力的科学合作。它也是北极环极海岸观测网（ACCO-Net）的一个主要组成部分，ACCO-Net是国际极地年的一个总体倡议，旨在将作为国际北极海岸动力学项目一部分建立的主要海岸侵蚀监测点与作为NSF淡水整合（FWI）研究一部分建立的主要北极河流采样点联系起来。该项目将与“学生伙伴项目”（Student Partners project）联系起来，并将其扩展。“学生伙伴项目”是一项科学与教育项目，涉及每个采样点的K-12学生及其教师。教师和他们的学生接受全球变化方面的教育，然后以更高的频率收集选定成分的河流样本，从而提高科学水平。

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