Abstract
Arctic rivers are part of the freshwater resources for the Arctic and are of great significance to research into changes in the Arctic Ocean. However, global river datasets do not describe rivers in Eurasia in sufficient detail. Based on a 30-m resolution land surface water dataset in 2010 together with global river width data (GRWL) and reference SRTM 30-m digital elevation data, the river systems in each Arctic basin were identified. Google Earth images were used for verification and the resulting accuracy was 93.96%. The areas of the rivers in each country studied were also analyzed and it was found that Russia has the largest area of rivers and Mongolia has the highest ratio of river area to country area. Based on these river datasets, the river ice phenology for the Ob River basin was analyzed using cloud-free binary snow-cover data obtained by Moderate Resolution Imaging Spectroradiometer (MODIS). The result showed that the open-water period for the Ob River is from June to October.
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