Dissolved Organic Matter Molecular Level Insights and Flux from the Onega River, Russia: Implications for Arctic Land-Ocean Fluxes

Water samples were collected from the Onega River (63°49'49.36\" N, 38°27'42.12\" ) between July 2018 and January 2020 (n = 19) and analyzed for absorbance and fluorescence, DOC concentration, and DOM composition using Fourier-transform ion cyclotron resonance mass. These data were used to examine the composition of DOM in the Onega River in Western Russia to assess how DOM dynamics in this relatively small northern high-latitude constrained riverine system compares with medium- and large-sized Arctic watersheds

2018年7月至2020年1月期间，研究人员于俄罗斯西部奥涅加河（Onega River，北纬63°49′49.36″，东经38°27′42.12″）采集了19份水样（n=19），采用傅里叶变换离子回旋共振质谱（Fourier-transform ion cyclotron resonance mass）对水样的吸光度与荧光特性、溶解有机碳（Dissolved Organic Carbon, DOC）浓度及溶解有机质（Dissolved Organic Matter, DOM）组成开展分析。本数据集用于解析该水系的溶解有机质组成，以评估这一相对小型的北部高纬度受限河流水系的溶解有机质动态特征，并对比其与中等、大型北极流域的溶解有机质动态差异。