Long-term changes of water flow, water temperature and heat flux of two largest arctic rivers of European Russia, Northern Dvina and Pechora
Long-term changes of water flow, water temperature and heat flux of two largest arctic rivers of European Russia, Northern Dvina and Pechora
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俄罗斯欧洲部分最大的两条北极河流北德维纳河和伯朝拉河水流量、水温和热通量的长期变化
DOI：
10.1088/1748-9326/ac82c1
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发表时间：
2022
影响因子：
6.7
通讯作者：
Groisman, Pavel Y
中科院分区：
文献类型：
--
作者：
Georgiadi, Aleksander G;Groisman, Pavel Y
在20世纪30年代至2020年的观测期间，研究了北德维纳河和伯霍拉河的水流量、水温和热通量的长持续(10-15年以上)的增减阶段。为了区分不同的阶段，使用了统计同质性检验和归一化累积偏差曲线。一般而言，所识别的阶段在所测量特征的平均值之间显示出统计上的显著差异。在对比阶段，北德维纳河流域和伯霍拉河流域暖季水温、径流和热通量的总体格局有很大不同。所确定的相的数目在所研究的河流之间有所不同，在北德维纳河中有两到四个相反的相，超过了伯霍拉河。因此，各阶段的持续时间也有很大的差异。北德维纳河的水文特征在不同时期的平均值差异超过了伯克拉河。热通量增加和减少的最长阶段与径流和水温的对比期几乎重合。所有水文特征值同时上升或下降的阶段与相应的气温上升或下降时期(平均一年和开阔水域期间)和年降雨量有关。河流流量、热通量和水温值同时增加或减少的那些长期持续阶段与全球热状况的变化、区域冰冻圈的变化以及北大西洋上空大气环流的长期增强或减弱有关，其特征是北大西洋涛动和斯堪的纳维亚环流模式等大环流指数的变化。
The phases of long-lasting (more than 10–15 years) increased and decreased water flow, water temperature and heat flux values in the Northern Dvina River and the Pechora River were studied for the observation period from the 1930s to 2020. To distinguish between different phases, statistical homogeneity tests and normalized cumulative deviation curves were used. Generally, the identified phases displayed statistically significant differences between average values of the measured characteristics. During contrasting phases, the general pattern of water temperature during the warm season, water runoff and heat flux in the Northern Dvina and Pechora River Basins differed considerably. The number of the identified phases varied between the studied rivers and ranged from two to four contrasting phases in the Northern Dvina River exceeded those of the Pechora River. Consequently, the duration of the phases also varied quite significantly. The difference in mean values of the hydrological characteristics during the contrasting phases in the Northern Dvina River exceeded those of the Pechora River. The longest phases of increased and decreased heat flux nearly coincide with contrasting periods of water runoff and water temperature. The phases of simultaneous increased or decreased values of all hydrological characteristics were associated with corresponding periods of increased or decreased air temperature (on average for a year and for the open water period) and annual precipitation values. Those long-lasting phases of simultaneously increased or decreased values of river flow, heat flux, and water temperature were associated with changes of the global thermal regime, regional cryosphere variations, and long-term periods of intensification or weakening of the atmospheric circulation over the North Atlantic, characterised by variability in macrocirculation indices such as the North Atlantic Oscillation and Scandinavian circulation pattern.
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影响因子：
3.7
作者：
Lammers, Richard B.;Pundsack, Jonathan W.;Shiklomanov, Alexander I.
通讯作者：
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影响因子：
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作者：
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影响因子：
0.7
作者：
V. Kryjov;O. Gorelits
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DOI：
--
发表时间：
2018
期刊：
影响因子：
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作者：
D. Magritsky;N. Frolova;Valeriy M Evstigneev;E. Povalishnikova;M. Kireeva;O. Pakhomova
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DOI：
--
发表时间：
2017
期刊：
影响因子：
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作者：
Shonam Sharma;P. Singh
通讯作者：
P. Singh