The 2021 heatwave results in simultaneous but different hydrological responses over Canada west of 100°W

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F24%3A100809" target="_blank" >RIV/60460709:41330/24:100809 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.jhydrol.2024.130824" target="_blank" >https://doi.org/10.1016/j.jhydrol.2024.130824</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jhydrol.2024.130824" target="_blank" >10.1016/j.jhydrol.2024.130824</a>

Result language

angličtina

Original language name

The 2021 heatwave results in simultaneous but different hydrological responses over Canada west of 100°W

Original language description

The 2021 Western North America heatwave resulted in record high air temperatures over a large area of Canada west of 100 degrees. The heatwave persisted from mid -June into July, depending upon the threshold used to define the heatwave. The heatwave was a weather event that was short lived but had a widespread transient impact on hydrology in this single year. These impacts were more evident in nival systems because of the prominent role of snowmelt. In normal years, the timing of hydrological processes, particularly snowmelt, is a function of latitude and elevation; in 2021 the heatwave resulted in simultaneous high rates of snowmelt across rivers where a snowpack existed at the time of the event, and strong diurnal melt signal was a diagnostic. In 2021, rivers throughout Canada west of 100 degrees W responded strongly to the heatwave, but the response depended on three factors: location relative to the heat dome, the hydrologic regime, and the amount of snow present at the time. The melt signal was strongest in those basins that had not reached their annual peak often having discharges in the highest 5 % of historical observations for that day of the year. Discharges rapidly declined in basins already in recession indicating the rapid depletion of the snowpack. In basins with little or no remaining snow, streamflow often declined during the same period often to levels in the lowest 5 % of historical observations for that day of the year.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10501 - Hydrology

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Hydrology

ISSN

0022-1694

e-ISSN

0022-1694

Volume of the periodical

632

Issue of the periodical within the volume

130824

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

19

Pages from-to

1-19

UT code for WoS article

001194201200001

EID of the result in the Scopus database

2-s2.0-85185883642