IsabelleNadeauAnctilEtAl2020

Reference

Isabelle, P.-E., Nadeau, D.F., Anctil, F., Rousseau, A.N., Jutras, S., Music, B. (2020) Impacts of high precipitation on the energy and water budgets of a humid boreal forest. Agricultural and Forest Meteorology, 280. (Scopus )

Abstract

The boreal forest will be strongly affected by climate change and in turn, these vast ecosystems may significantly impact global climatology and hydrology due to their exchanges of carbon and water with the atmosphere. It is now crucial to understand the intricate relationships between precipitation and evapotranspiration in these environments, particularly in less-studied locations characterized by a cold and humid climate. This study presents state-of-the-art measurements of energy and water budgets components over three years (2016–2018) at the Montmorency Forest, Québec, Canada: a balsam fir boreal forest that receives ∼1600 mm of precipitation annually (continental subarctic climate; Köppen classification subtype Dfc). Precipitation, evapotranspiration and potential evapotranspiration at the site are compared with observations from thirteen experimental sites around the world. These intercomparison sites (89 study-years) encompass various types of climate and vegetation (black spruces, jack pines, etc.) encountered in boreal forests worldwide. The Montmorency Forest stands out by receiving the largest amount of precipitation. Across all sites, water availability seems to be the principal evapotranspiration constraint, as precipitation tends to be more influential than potential evapotranspiration and other factors. This leads to the Montmorency Forest generating the largest amount of evapotranspiration, on average ∼550 mm y−1. This value appears to be an ecosystem maximum for evapotranspiration, which may be explained either by a physiological limit or a limited energy availability due to the presence of cloud cover. The Montmorency Forest water budget evacuates the precipitation excess mostly by watershed discharges, at an average rate of ∼1050 mm y−1, with peaks during the spring freshet. This behaviour, typical of mountainous headwater basins, necessarily influence downstream hydrological regimes to a large extent. This study provides a much needed insight in the hydrological regimes of a humid boreal-forested mountainous watershed, a type of basin rarely studied with precise energy and water budgets before. © 2019 Elsevier B.V.

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@ARTICLE { IsabelleNadeauAnctilEtAl2020,
    AUTHOR = { Isabelle, P.-E. and Nadeau, D.F. and Anctil, F. and Rousseau, A.N. and Jutras, S. and Music, B. },
    TITLE = { Impacts of high precipitation on the energy and water budgets of a humid boreal forest },
    JOURNAL = { Agricultural and Forest Meteorology },
    YEAR = { 2020 },
    VOLUME = { 280 },
    NOTE = { cited By 0 },
    ABSTRACT = { The boreal forest will be strongly affected by climate change and in turn, these vast ecosystems may significantly impact global climatology and hydrology due to their exchanges of carbon and water with the atmosphere. It is now crucial to understand the intricate relationships between precipitation and evapotranspiration in these environments, particularly in less-studied locations characterized by a cold and humid climate. This study presents state-of-the-art measurements of energy and water budgets components over three years (2016–2018) at the Montmorency Forest, Québec, Canada: a balsam fir boreal forest that receives ∼1600 mm of precipitation annually (continental subarctic climate; Köppen classification subtype Dfc). Precipitation, evapotranspiration and potential evapotranspiration at the site are compared with observations from thirteen experimental sites around the world. These intercomparison sites (89 study-years) encompass various types of climate and vegetation (black spruces, jack pines, etc.) encountered in boreal forests worldwide. The Montmorency Forest stands out by receiving the largest amount of precipitation. Across all sites, water availability seems to be the principal evapotranspiration constraint, as precipitation tends to be more influential than potential evapotranspiration and other factors. This leads to the Montmorency Forest generating the largest amount of evapotranspiration, on average ∼550 mm y−1. This value appears to be an ecosystem maximum for evapotranspiration, which may be explained either by a physiological limit or a limited energy availability due to the presence of cloud cover. The Montmorency Forest water budget evacuates the precipitation excess mostly by watershed discharges, at an average rate of ∼1050 mm y−1, with peaks during the spring freshet. This behaviour, typical of mountainous headwater basins, necessarily influence downstream hydrological regimes to a large extent. This study provides a much needed insight in the hydrological regimes of a humid boreal-forested mountainous watershed, a type of basin rarely studied with precise energy and water budgets before. © 2019 Elsevier B.V. },
    AFFILIATION = { CentrEau - Water Research Center, Université Laval, 1065 avenue de la Médecine, Québec, QC, Canada; Department of Civil and Water Engineering, Université Laval, 1065 avenue de la Médecine, Québec, QC, Canada; Department of Forestry and Wood Science, Université Laval, 2405 rue de la Terrasse, Québec, QC, Canada; Institut national de la recherche scientifique - Centre Eau Terre Environnement, 490 rue de la Couronne, Québec, QC, Canada; Ouranos Consortium, 550 Sherbrooke St West, Montréal, QC, Canada },
    ART_NUMBER = { 107813 },
    AUTHOR_KEYWORDS = { Boreal forest; Eddy-covariance; Energy budget; Evapotranspiration; Water budget; Watershed hydrology },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1016/j.agrformet.2019.107813 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85073987708&doi=10.1016%2fj.agrformet.2019.107813&partnerID=40&md5=84cc0ef404ab7618cbdda9c4561c6607 },
}

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