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Cited 4 time in webofscience Cited 5 time in scopus
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Changes in the wintertime hydroclimatic regime in St. John River, Maine, USAopen access

Authors
Kim, Jong-SukJain, ShaleenLee, Taesam
Issue Date
Aug-2021
Publisher
IWA PUBLISHING
Keywords
episodic warming; hydroclimate variability; teleconnection patterns; weather-climate linkage
Citation
JOURNAL OF WATER AND CLIMATE CHANGE, v.12, no.5, pp 2082 - 2092
Pages
11
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF WATER AND CLIMATE CHANGE
Volume
12
Number
5
Start Page
2082
End Page
2092
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/3454
DOI
10.2166/wcc.2021.230
ISSN
2040-2244
2408-9354
Abstract
Changes in the flow regime in snowmelt- and ice-dominated rivers have important implications for navigation, flood hazard, recreation, and ecosystems. We investigated recent changes in the high flows of the St. John River basin in Maine, USA, with a view to quantify changes in high-flow characteristics, as well as extreme event estimates. The results analyzed herein demonstrate shifts in springtime streamflow as well as in emergent wintertime (January-February) streamflow over the past four decades. A Poisson-based regression approach was applied to develop a model for the diagnosis of weather-climate linkage. The sensitivity of episodic warm weather events to the negative phase of the Tropical-Northern Hemisphere (TNH) atmospheric teleconnection pattern is evident. Although a modest sample size of historical data on the weather-climate linkage imposes a limit in terms of reliability, the approach presented herein shows a modest role of the TNH pattern, in response to the warm phase of El Nino/Southern Oscillation, as one of the factors that contribute to hydroclimate variability in the St. John River basin. This diagnostic study sought to investigate the changes in the wintertime streamflow regime and the relative linkages with short-term concurrent weather events, as well as large-scale climatic linkages. This improved an understanding of hydrological extremes within a climatological context and offers new knowledge to inform water resources planning and decision-making.
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공과대학 (토목공학과)
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