Collaborative Research: AON: The Arctic Great Rivers Observatory (ArcticGRO)

合作研究：AON：北极大河观测站 (ArcticGRO)

• 批准号: 1914081
• 负责人: Robert Spencer
• 金额: $ 42.59万
• 依托单位: Florida State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-09-01 至 2025-02-28
• 项目状态: 未结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1914081&HistoricalAwards=false
• 关键词: Collaborative; Research; AON; Arctic; Great

Massive northern rivers transport huge quantities of water and waterborne constituents from the continents to the Arctic Ocean. During this period of rapid Arctic change, trends in river chemistry and discharge provide powerful insights into changes occurring on land and how they may impact the Arctic Ocean as well as Arctic residents who rely on river and coastal resources. The Arctic Great Rivers Observatory (ArcticGRO) investigates how the chemistry and discharge of the Arctic's largest rivers are changing. This is important because the discharge and chemistry of Arctic rivers reflect processes occurring throughout their watersheds, thus providing an integrative measure of terrestrial change. Changes in river chemistry and discharge also influences the chemistry, biology, sea ice formation, and circulation of the receiving coastal and ocean waters, so understanding Arctic Ocean processes requires knowledge of continental inputs via rivers. The Arctic Great Rivers Observatory focuses on the Arctic's six largest rivers; the Yukon and Mackenzie in North America and the Ob, Yenisey, Lena, and Kolyma in Siberia. Water samples are collected from each of these rivers six times per year and are analyzed for a wide variety of biogeochemical parameters including nutrients, organic matter, major ions and trace elements, and suspended sediments. ArcticGRO also curates daily discharge data for these six rivers and has begun to gather and disseminate daily discharge data for nine additional rivers in the Russian Arctic. The watersheds of ArcticGRO's six primary rivers account for 67% of the pan-Arctic watershed area and, with the nine additional rivers in the Russian Arctic, ArcticGRO's coverage increases to 77% of the pan-Arctic watershed. Thus, ArcticGRO's water quality sampling and curation of river discharge data captures the vast majority of riverine inputs to the Arctic Ocean. All resulting data are freely available through ArcticGRO's website (arcticgreatrivers.org) and through the Arctic Data Center.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.

北部的大量河流将大量的水和水性成分从大陆输送到北冰洋。在北极快速变化的时期，河流化学和流量的趋势为了解陆地上发生的变化及其如何影响北冰洋以及依赖河流和沿海资源的北极居民提供了有力的见解。北极大河流观测站 (ArcticGRO) 研究北极最大河流的化学成分和流量的变化。 这很重要，因为北极河流的流量和化学反应反映了整个流域发生的过程，从而提供了陆地变化的综合衡量标准。河流化学和流量的变化也会影响化学、生物学、海冰形成以及接收沿海和海洋水域的循环，因此了解北冰洋过程需要了解通过河流的大陆输入。 北极大河观测站重点关注北极六大河流；北美的育空河和麦肯齐河以及西伯利亚的鄂毕河、叶尼塞河、勒拿河和科雷马河。 每年从这些河流中采集六次水样，并分析各种生物地球化学参数，包括营养物、有机质、主要离子和微量元素以及悬浮沉积物。 ArcticGRO 还整理了这 6 条河流的每日流量数据，并已开始收集和传播俄罗斯北极地区另外 9 条河流的每日流量数据。 ArcticGRO的6条主要河流的流域占泛北极流域面积的67%，加上俄罗斯北极地区的另外9条河流，ArcticGRO的覆盖范围增加到泛北极流域的77%。 因此，ArcticGRO 的水质采样和河流排放数据管理捕获了北冰洋的绝大多数河流输入。所有产生的数据均可通过 ArcticGRO 网站 (arcticgreatrivers.org) 和北极数据中心免费获取。该奖项反映了 NSF 的法定使命，并通过使用基金会的智力价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

Biogeochemical River Runoff Drives Intense Coastal Arctic Ocean CO 2 Outgassing

生物地球化学河流径流导致北冰洋沿岸CO 2 强烈释放

• DOI: 10.1029/2022gl102377
• 发表时间: 2023-04
• 期刊: Geophysical Research Letters
• 影响因子: 5.2
• 作者: Bertin, C.;Carroll, D.;Menemenlis, D.;Dutkiewicz, S.;Zhang, H.;Matsuoka, A.;Tank, S.;Manizza, M.;Miller, C. E.;Babin, M.;et al
• 通讯作者: et al

The Transformation and Export of Organic Carbon Across an Arctic River‐Delta‐Ocean Continuum

北极河流-三角洲-海洋连续体有机碳的转化和输出

• DOI: 10.1029/2022jg007139
• 发表时间: 2022-12
• 期刊: Journal of Geophysical Research: Biogeosciences
• 作者: Clark, J. Blake;Mannino, Antonio;Tzortziou, Maria;Spencer, Robert G.;Hernes, Peter
• 通讯作者: Hernes, Peter

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

北部主要河流化学的最新趋势标志着北极的广泛变化

• DOI: 10.1038/s41561-023-01247-7
• 发表时间: 2023-07
• 期刊: Nature Geoscience
• 影响因子: 18.3
• 作者: Tank, Suzanne E.;McClelland, James W.;Spencer, Robert G.;Shiklomanov, Alexander I.;Suslova, Anya;Moatar, Florentina;Amon, Rainer M.;Cooper, Lee W.;Elias, Greg;Gordeev, Vyacheslav V.;et al
• 通讯作者: et al

Permafrost degradation and nitrogen cycling in Arctic rivers: insights from stable nitrogen isotope studies

北极河流的永久冻土退化和氮循环：稳定氮同位素研究的见解

• DOI: 10.5194/bg-20-365-2023
• 发表时间: 2023-01
• 期刊: Biogeosciences
• 影响因子: 4.9
• 作者: Francis, Adam;Ganeshram, Raja S.;Tuerena, Robyn E.;Spencer, Robert G.;Holmes, Robert M.;Rogers, Jennifer A.;Mahaffey, Claire
• 通讯作者: Mahaffey, Claire

Multidecadal declines in particulate mercury and sediment export from Russian rivers in the pan-Arctic basin

泛北极盆地俄罗斯河流的颗粒汞和沉积物出口量出现数十年下降

• DOI: 10.1073/pnas.2119857119
• 发表时间: 2022-04
• 期刊: Proceedings of the National Academy of Sciences
• 作者: Zolkos, Scott;Zhulidov, Alexander V.;Gurtovaya, Tatiana Yu.;Gordeev, Vyacheslav V.;Berdnikov, Sergey;Pavlova, Nadezhda;Kalko, Evgenia A.;Kuklina, Yana A.;Zhulidov, Danil A.;Kosmenko, Lyudmila S.;et al
• 通讯作者: et al