A hydrometeorological dataset from the taiga-tundra ecotone in the western Canadian Arctic: Trail Valley Creek, Northwest Territories

<p>Across the Arctic, we are observing climate system feedback with permafrost thaw, rising air temperatures, changes in surface and subsurface hydrology, vegetation, wildlife and northern communities. There is a need for high quality and long duration records, with datasets targeting characteristics of snow, hydrology, vegetation, sub-surface thermal properties of the permafrost, and fluxes of water and energy. The Laurier Trail Valley Creek (TVC) Arctic Research Station, approximately 50 km north of Inuvik (NT, Canada) in the low Arctic tundra, was established in 1991. With scattered patches of tall shrubs and spruce forests, TVC is underlain with ice-rich continuous permafrost approximately 150 – 350 meters in depth, with ice-wedges, tabular ice, segregated ice, thermokarst lakes and drained lakes. The research station hosts teams of interdisciplinary, multi-institutional research groups from across Canada and other countries. A core aspect of hydrological research at TVC is the integration of distributed snow mapping, eddy covariance measurements of energy and water between the Arctic tundra landscape and atmosphere, lake levels and streamflow, extensive remote sensing and high-resolution spatially distributing modelling.
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The multi-decadal TVC dataset described here includes:
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<ul>
<li>Weather station data (1991-2025)</li>
<li>End of winter distributed snow observations (1991-2025)</li>
<li>Gap-filled meteorological data (1991-2023)</li>
<li>Daily TVC discharge from the Environment and Climate Change Canada hydrometric station (10ND002) (1977-2025)</li>
<li>TVC watershed boundaries</li>
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