Effects of Climatic Drivers and Teleconnections on Late 20th Century Trends in Spring Freshet of Four Major Arctic-Draining Rivers
Spring freshet is the dominant annual discharge event in all major Arctic draining rivers with large contributions to freshwater inflow to the Arctic Ocean. Research has shown that the total freshwater influx to the Arctic Ocean has been increasing, while at the same time, the rate of change in the...
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Online Access: | http://hdl.handle.net/1828/12588 https://doi.org/10.3390/w13020179 |
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ftuvicpubl:oai:dspace.library.uvic.ca:1828/12588 2023-05-15T14:25:19+02:00 Effects of Climatic Drivers and Teleconnections on Late 20th Century Trends in Spring Freshet of Four Major Arctic-Draining Rivers Ahmed, Roxanne Prowse, Terry Dibike, Yonas Bonsal, Barrie 2021 application/pdf http://hdl.handle.net/1828/12588 https://doi.org/10.3390/w13020179 en eng Water Ahmed, R., Prowse, T., Dibike, Y., & Bonsal, B. (2021). Effects of Climatic Drivers and Teleconnections on Late 20th Century Trends in Spring Freshet of Four Major Arctic-Draining Rivers. Water, 13(2), 1-30. https://doi.org/10.3390/w13020179. https://doi.org/10.3390/w13020179 http://hdl.handle.net/1828/12588 Arctic spring freshet hydro-climatology streamflow teleconnections atmospheric circulation Article 2021 ftuvicpubl https://doi.org/10.3390/w13020179 2022-05-19T06:11:34Z Spring freshet is the dominant annual discharge event in all major Arctic draining rivers with large contributions to freshwater inflow to the Arctic Ocean. Research has shown that the total freshwater influx to the Arctic Ocean has been increasing, while at the same time, the rate of change in the Arctic climate is significantly higher than in other parts of the globe. This study assesses the large-scale atmospheric and surface climatic conditions affecting the magnitude, timing and regional variability of the spring freshets by analyzing historic daily discharges from sub-basins within the four largest Arctic-draining watersheds (Mackenzie, Ob, Lena and Yenisei). Results reveal that climatic variations closely match the observed regional trends of increasing cold-season flows and earlier freshets. Flow regulation appears to suppress the effects of climatic drivers on freshet volume but does not have a significant impact on peak freshet magnitude or timing measures. Spring freshet characteristics are also influenced by El Niño-Southern Oscillation, the Pacific Decadal Oscillation, the Arctic Oscillation and the North Atlantic Oscillation, particularly in their positive phases. The majority of significant relationships are found in unregulated stations. This study provides a key insight into the climatic drivers of observed trends in freshet characteristics, whilst clarifying the effects of regulation versus climate at the sub-basin scale. Faculty Reviewed Article in Journal/Newspaper Arctic Arctic Arctic Ocean North Atlantic North Atlantic oscillation University of Victoria (Canada): UVicDSpace Arctic Arctic Ocean Pacific Water 13 2 179 |
institution |
Open Polar |
collection |
University of Victoria (Canada): UVicDSpace |
op_collection_id |
ftuvicpubl |
language |
English |
topic |
Arctic spring freshet hydro-climatology streamflow teleconnections atmospheric circulation |
spellingShingle |
Arctic spring freshet hydro-climatology streamflow teleconnections atmospheric circulation Ahmed, Roxanne Prowse, Terry Dibike, Yonas Bonsal, Barrie Effects of Climatic Drivers and Teleconnections on Late 20th Century Trends in Spring Freshet of Four Major Arctic-Draining Rivers |
topic_facet |
Arctic spring freshet hydro-climatology streamflow teleconnections atmospheric circulation |
description |
Spring freshet is the dominant annual discharge event in all major Arctic draining rivers with large contributions to freshwater inflow to the Arctic Ocean. Research has shown that the total freshwater influx to the Arctic Ocean has been increasing, while at the same time, the rate of change in the Arctic climate is significantly higher than in other parts of the globe. This study assesses the large-scale atmospheric and surface climatic conditions affecting the magnitude, timing and regional variability of the spring freshets by analyzing historic daily discharges from sub-basins within the four largest Arctic-draining watersheds (Mackenzie, Ob, Lena and Yenisei). Results reveal that climatic variations closely match the observed regional trends of increasing cold-season flows and earlier freshets. Flow regulation appears to suppress the effects of climatic drivers on freshet volume but does not have a significant impact on peak freshet magnitude or timing measures. Spring freshet characteristics are also influenced by El Niño-Southern Oscillation, the Pacific Decadal Oscillation, the Arctic Oscillation and the North Atlantic Oscillation, particularly in their positive phases. The majority of significant relationships are found in unregulated stations. This study provides a key insight into the climatic drivers of observed trends in freshet characteristics, whilst clarifying the effects of regulation versus climate at the sub-basin scale. Faculty Reviewed |
format |
Article in Journal/Newspaper |
author |
Ahmed, Roxanne Prowse, Terry Dibike, Yonas Bonsal, Barrie |
author_facet |
Ahmed, Roxanne Prowse, Terry Dibike, Yonas Bonsal, Barrie |
author_sort |
Ahmed, Roxanne |
title |
Effects of Climatic Drivers and Teleconnections on Late 20th Century Trends in Spring Freshet of Four Major Arctic-Draining Rivers |
title_short |
Effects of Climatic Drivers and Teleconnections on Late 20th Century Trends in Spring Freshet of Four Major Arctic-Draining Rivers |
title_full |
Effects of Climatic Drivers and Teleconnections on Late 20th Century Trends in Spring Freshet of Four Major Arctic-Draining Rivers |
title_fullStr |
Effects of Climatic Drivers and Teleconnections on Late 20th Century Trends in Spring Freshet of Four Major Arctic-Draining Rivers |
title_full_unstemmed |
Effects of Climatic Drivers and Teleconnections on Late 20th Century Trends in Spring Freshet of Four Major Arctic-Draining Rivers |
title_sort |
effects of climatic drivers and teleconnections on late 20th century trends in spring freshet of four major arctic-draining rivers |
publisher |
Water |
publishDate |
2021 |
url |
http://hdl.handle.net/1828/12588 https://doi.org/10.3390/w13020179 |
geographic |
Arctic Arctic Ocean Pacific |
geographic_facet |
Arctic Arctic Ocean Pacific |
genre |
Arctic Arctic Arctic Ocean North Atlantic North Atlantic oscillation |
genre_facet |
Arctic Arctic Arctic Ocean North Atlantic North Atlantic oscillation |
op_relation |
Ahmed, R., Prowse, T., Dibike, Y., & Bonsal, B. (2021). Effects of Climatic Drivers and Teleconnections on Late 20th Century Trends in Spring Freshet of Four Major Arctic-Draining Rivers. Water, 13(2), 1-30. https://doi.org/10.3390/w13020179. https://doi.org/10.3390/w13020179 http://hdl.handle.net/1828/12588 |
op_doi |
https://doi.org/10.3390/w13020179 |
container_title |
Water |
container_volume |
13 |
container_issue |
2 |
container_start_page |
179 |
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1766297737405399040 |