Observing northern high-latitude river systems to understand changes in a warming Arctic

Current Climate Change Reports
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Abstract

Purpose of Review

Streams and rivers are undergoing rapid change as the Arctic warms and thaws. We review recent observations in Arctic stream systems to identify ubiquitous changes and the most useful tools for observing change and exploring the underlying processes.

Recent Findings

Recent literature indicates increasingly significant trends in river hydrology and chemistry due to persistent warming in the Arctic and longer observational records for analysis. However, regional differences in the magnitude and direction of these trends persist. We also observe thresholds in ground thaw and surface–groundwater interactions that can impact river hydrology and chemistry.

Summary

Warming and thaw are occurring rapidly at high latitudes, resulting in increasing, yet variable responses in stream systems across regions and scales. These differences highlight the need for long-term records and an interdisciplinary approach to explain trends and predict future states. Stream systems respond to multiple landscape changes related to hydrology (changing precipitation and subsurface flow), geology (ground thaw dynamics), and ecology (vegetation change).

Publication type Article
Publication Subtype Journal Article
Title Observing northern high-latitude river systems to understand changes in a warming Arctic
Series title Current Climate Change Reports
DOI 10.1007/s40641-025-00202-5
Volume 11
Publication Date June 04, 2025
Year Published 2025
Language English
Publisher Springer Nature
Contributing office(s) Alaska Science Center Water
Description 5, 11 p.
Additional publication details