Variability in river temperature, discharge, and energy flux from the Russian pan-Arctic landmass
Variability in river temperature, discharge, and energy flux from the Russian pan-Arctic landmass
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DOI：
10.1029/2006jg000370
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发表时间：
2007-11-22
影响因子：
3.7
通讯作者：
Shiklomanov, Alexander I.
中科院分区：
文献类型：
--
作者：
Lammers, Richard B.;Pundsack, Jonathan W.;Shiklomanov, Alexander I.
[1]我们介绍了一个新的北极河流温度数据集，包括20个仪表在17个独特的北冰洋流域在俄罗斯泛北极（ART俄罗斯）。暖季10天的时间步长数据（几十年），从俄罗斯档案来源收集，涵盖了1929年至2003年的大部分数据下降的范围从20世纪30年代中期到90年代初。水温数据与河流流量数据相结合，以估计所有流域和整个俄罗斯泛北极地区的能量通量。对水温、河流流量和能量通量进行了趋势检验。在俄罗斯泛北极的欧洲部分，发现最大的十年河流温度的空间相干显着增加。其他几个流域显示出显着的变化，但没有强有力的模式，无论是在变量之间的连接或空间。三个最大的流域（奥布，叶尼塞，莉娜）合并的面积平均能量通量的趋势被认为是显着下降。我们推测，在叶尼塞盆地，这种减少是由于大量蓄水的河水。温度和能量通量趋势之间缺乏一致性是由于河流温度峰值和河流流量峰值之间的时间差异。来自俄罗斯盆地的平均面积平均能量通量为0.2 W m（-2）。利用这一平均值，我们估计整个俄罗斯泛北极地区的总能量通量，包括测量和未测量的，为82 EJ a（-1）。
[1] We introduce a new Arctic river temperature data set covering 20 gauges in 17 unique Arctic Ocean drainage basins in the Russian pan-Arctic (ART-Russia). Warm season 10-day time step data (decades) were collected from Russian archival sources covering a period from 1929 to 2003 with most data falling in the range from the mid-1930s to the early 1990s. The water temperature data were combined with river discharge data to estimate energy flux for all basins and over the Russian pan-Arctic as a whole. Tests for trend were carried out for water temperature, river discharge, and energy flux. Spatially coherent significant increases in the maximum decadal river temperature were found in the European part of the Russian pan-Arctic. Several other drainage basins showed significant changes, but there was no strong pattern either in the connections between variables or spatially. The trend in area averaged energy flux for the three largest drainage basins ( Ob, Yenisey, Lena) combined was found to be significantly decreasing. We speculate that in the Yenisey basin, this decrease was due to large impoundments of river water. The lack of consistency between temperature and energy flux trends was due to the difference in timing between peaks in river temperature and river discharge. The mean area averaged energy flux from the Russian basins was 0.2 W m (-2). Using this mean we estimated the total energy flux from the entire Russian pan-Arctic, both gauged and ungauged, to be 82 EJ a(-1).