Increasing Winter Baseflow in Response to Permafrost Thaw and Precipitation Regime Shifts in Northeastern China
Rapid permafrost thaw and precipitation regime shifts are altering surface and subsurface hydrological processes in arctic and subarctic watersheds. Long-term data (40 years) from two large permafrost watersheds in northeastern China, the Tahe River and Duobukuer River watersheds, indicate that wint...
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2017
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Online Access: | https://doi.org/10.3390/w9010025 https://doaj.org/article/de42afc47d5b4ca5892b3149812dac02 |
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ftdoajarticles:oai:doaj.org/article:de42afc47d5b4ca5892b3149812dac02 2023-05-15T15:07:17+02:00 Increasing Winter Baseflow in Response to Permafrost Thaw and Precipitation Regime Shifts in Northeastern China Liangliang Duan Xiuling Man Barret L. Kurylyk Tijiu Cai 2017-01-01T00:00:00Z https://doi.org/10.3390/w9010025 https://doaj.org/article/de42afc47d5b4ca5892b3149812dac02 EN eng MDPI AG http://www.mdpi.com/2073-4441/9/1/25 https://doaj.org/toc/2073-4441 2073-4441 doi:10.3390/w9010025 https://doaj.org/article/de42afc47d5b4ca5892b3149812dac02 Water, Vol 9, Iss 1, p 25 (2017) cold regions groundwater climate warming frozen ground hydrologic trends precipitation regimes Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 article 2017 ftdoajarticles https://doi.org/10.3390/w9010025 2022-12-31T15:44:04Z Rapid permafrost thaw and precipitation regime shifts are altering surface and subsurface hydrological processes in arctic and subarctic watersheds. Long-term data (40 years) from two large permafrost watersheds in northeastern China, the Tahe River and Duobukuer River watersheds, indicate that winter baseflows are characterized by significant positive trends of 1.7% and 2.5%·year−1, respectively. Winter baseflows exhibited statistically significant positive correlations with mean annual air temperature and the thawing index, an indicator of permafrost degradation, for both watersheds, as well as the increasing annual rainfall fraction of precipitation for the Duobukuer River watershed. Winter baseflows were characterized by a breakpoint in 1989, which lagged behind the mean annual air temperature breakpoint by only two years. The statistical analyses suggest that the increases in winter baseflow are likely related to enhanced groundwater storage and winter groundwater discharge caused by permafrost thaw and are potentially also due to an increase in the wet season rainfall. These hydrological trends are first apparent in marginal areas of permafrost distribution and are expected to shift northward towards formerly continuous permafrost regions in the context of future climate warming. Article in Journal/Newspaper Arctic permafrost Subarctic Directory of Open Access Journals: DOAJ Articles Arctic Water 9 1 25 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
cold regions groundwater climate warming frozen ground hydrologic trends precipitation regimes Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 |
spellingShingle |
cold regions groundwater climate warming frozen ground hydrologic trends precipitation regimes Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 Liangliang Duan Xiuling Man Barret L. Kurylyk Tijiu Cai Increasing Winter Baseflow in Response to Permafrost Thaw and Precipitation Regime Shifts in Northeastern China |
topic_facet |
cold regions groundwater climate warming frozen ground hydrologic trends precipitation regimes Hydraulic engineering TC1-978 Water supply for domestic and industrial purposes TD201-500 |
description |
Rapid permafrost thaw and precipitation regime shifts are altering surface and subsurface hydrological processes in arctic and subarctic watersheds. Long-term data (40 years) from two large permafrost watersheds in northeastern China, the Tahe River and Duobukuer River watersheds, indicate that winter baseflows are characterized by significant positive trends of 1.7% and 2.5%·year−1, respectively. Winter baseflows exhibited statistically significant positive correlations with mean annual air temperature and the thawing index, an indicator of permafrost degradation, for both watersheds, as well as the increasing annual rainfall fraction of precipitation for the Duobukuer River watershed. Winter baseflows were characterized by a breakpoint in 1989, which lagged behind the mean annual air temperature breakpoint by only two years. The statistical analyses suggest that the increases in winter baseflow are likely related to enhanced groundwater storage and winter groundwater discharge caused by permafrost thaw and are potentially also due to an increase in the wet season rainfall. These hydrological trends are first apparent in marginal areas of permafrost distribution and are expected to shift northward towards formerly continuous permafrost regions in the context of future climate warming. |
format |
Article in Journal/Newspaper |
author |
Liangliang Duan Xiuling Man Barret L. Kurylyk Tijiu Cai |
author_facet |
Liangliang Duan Xiuling Man Barret L. Kurylyk Tijiu Cai |
author_sort |
Liangliang Duan |
title |
Increasing Winter Baseflow in Response to Permafrost Thaw and Precipitation Regime Shifts in Northeastern China |
title_short |
Increasing Winter Baseflow in Response to Permafrost Thaw and Precipitation Regime Shifts in Northeastern China |
title_full |
Increasing Winter Baseflow in Response to Permafrost Thaw and Precipitation Regime Shifts in Northeastern China |
title_fullStr |
Increasing Winter Baseflow in Response to Permafrost Thaw and Precipitation Regime Shifts in Northeastern China |
title_full_unstemmed |
Increasing Winter Baseflow in Response to Permafrost Thaw and Precipitation Regime Shifts in Northeastern China |
title_sort |
increasing winter baseflow in response to permafrost thaw and precipitation regime shifts in northeastern china |
publisher |
MDPI AG |
publishDate |
2017 |
url |
https://doi.org/10.3390/w9010025 https://doaj.org/article/de42afc47d5b4ca5892b3149812dac02 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic permafrost Subarctic |
genre_facet |
Arctic permafrost Subarctic |
op_source |
Water, Vol 9, Iss 1, p 25 (2017) |
op_relation |
http://www.mdpi.com/2073-4441/9/1/25 https://doaj.org/toc/2073-4441 2073-4441 doi:10.3390/w9010025 https://doaj.org/article/de42afc47d5b4ca5892b3149812dac02 |
op_doi |
https://doi.org/10.3390/w9010025 |
container_title |
Water |
container_volume |
9 |
container_issue |
1 |
container_start_page |
25 |
_version_ |
1766338822876954624 |