Concentration-Discharge Relationships in the Six Largest Arctic Rivers, 2003-2019

This dataset provides the results of the analysis of the relationship of dissolved analyte concentrations and river discharges in the six largest Arctic rivers across the global panarctic region (see Figure 1). Long-term measurements of dissolved analyte concentrations and river discharge have been collected for each of the Kolyma, Lena, Mackenzie, Ob, Yenisey, and Yukon rivers by the Arctic Great Rivers Observatory (ArcticGRO) project from ~2003-present (Shiklomanov, 2021). The relationship of dissolved analyte concentrations and discharges in each river was characterized by statistical analysis of the slope of the log(concentration) vs log(discharge) (b), the coefficient of variation ratio (CVc/CVq), the 2.5% and 97.5% confidence intervals of b, and assigning a chemostatic, flushing, diluting, or non-systematic behavior category according to Koger (2018). The summary of these analyses for all six rivers is provided in one .csv file.The concentrations of 20 dissolved analytes and discharge measurement data for the individual Kolyma, Lena, Mackenzie, Ob, Yenisey, and Yukon rivers are also provided with this dataset. There is a separate *.csv file for each river. These public ArcticGRO data (https://www.arcticrivers.org) (Shiklomanov, 2021) were downloaded on Feb 13, 2020, but each river has different measurement dates over the sampling and analysis period. The ArcticGRO metadata document downloaded on Feb 13, 2020 is also included in this dataset.The Next-Generation Ecosystem Experiments: Arctic (NGEE Arctic), was a 10-year research effort (2012-2022) to reduce uncertainty in Earth System Models by developing a predictive understanding of carbon-rich Arctic ecosystems and feedbacks to climate. NGEE Arctic was supported by the Department of Energy?s Office of Biological and Environmental Research.The NGEE Arctic project had two field research sites: 1) located within the Arctic polygonal tundra coastal region on the Barrow Environmental Observatory (BEO) and the North Slope near Utqiagvik (Barrow), Alaska and 2) multiple areas on the discontinuous permafrost region of the Seward Peninsula north of Nome, Alaska.Through observations, experiments, and synthesis with existing datasets, NGEE Arctic provided an enhanced knowledge base for multi-scale modeling and contributed to improved process representation at global pan-Arctic scales within the Department of Energy?s Earth system Model (the Energy Exascale Earth System Model, or E3SM), and specifically within the E3SM Land Model component (ELM).本数据集提供了全球泛北极地区六大北极河流的溶解分析物浓度与径流量之间关系的分析结果（见图1）。 北极大河观测站（Arctic Great Rivers Observatory, ArcticGRO）项目于2003年至今，收集了科雷马河、勒拿河、马更些河、鄂毕河、叶尼塞河和育空河这六条河流的溶解分析物浓度与径流量长期实测数据（Shiklomanov, 2021）。 针对每条河流的溶解分析物浓度与径流量的关系，通过对浓度对数-径流量对数的斜率（b）、变异系数比（CVc/CVq）、斜率b的2.5%与97.5%置信区间进行统计分析，并依据Koger（2018）的标准将其归类为化学稳态（chemostatic）、冲刷型（flushing）、稀释型（diluting）或非系统型行为。 六条河流的所有分析结果汇总于一个CSV格式文件中。 本数据集同时提供了六条河流各自的20种溶解分析物浓度与径流量实测数据，每条河流对应一个独立的CSV格式文件。 本数据集使用的公开ArcticGRO数据（https://www.arcticrivers.org，Shiklomanov, 2021）于2020年2月13日下载，但各河流的采样与分析时段内的实测日期各不相同。本数据集同时包含2020年2月13日下载的ArcticGRO元数据文档。 下一代生态系统实验：北极（Next-Generation Ecosystem Experiments: Arctic, NGEE Arctic）是一项为期10年（2012-2022）的研究项目，旨在通过深化对富碳北极生态系统及其气候反馈机制的预测性认知，降低地球系统模型的不确定性。该项目由美国能源部生物与环境研究办公室资助。 NGEE Arctic项目设有两个野外研究站点：1）位于美国阿拉斯加州乌特恰维克（原巴罗）附近的北坡巴罗环境观测站（Barrow Environmental Observatory, BEO）内的北极多边形苔原海岸区域；2）位于美国阿拉斯加州诺姆以北苏厄德半岛的不连续多年冻土区的多个区域。 通过实地观测、受控实验以及与现有数据集的整合分析，NGEE Arctic项目为多尺度建模构建了更完善的知识库，并助力美国能源部地球系统模型（能源极值计算地球系统模型，Energy Exascale Earth System Model, E3SM），特别是其陆面模型组件（E3SM Land Model, ELM）在全球泛北极尺度下改进了过程表征能力。