Modelling canopy actual transpiration in the boreal forest with reduced error propagation

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dc.contributor.authorQuiñonez-Piñón, M. Rebeca
dc.contributor.authorValeo, Caterina
dc.date.accessioned2022-11-28T18:57:57Z
dc.date.available2022-11-28T18:57:57Z
dc.date.copyright2020en_US
dc.date.issued2020
dc.description.abstractThe authors have developed a scaling approach to aggregate tree sap flux with reduced error propagation in modeled estimates of actual transpiration (Tplot) of three boreal species. The approach covers three scales: tree point, single tree trunk, and plot scale. Throughout the development of this approach the error propagated from one scale to the next was reduced by analyzing the main sources of error and exploring how some field and lab techniques, and mathematical modeling can potentially reduce the error on measured or estimated parameters. Field measurements of tree sap flux at the tree point scale are used to obtain canopy transpiration estimates at the plot scale in combination with allometric correlations of sapwood depth (measured microscopically and scaled to plots), sapwood area, and leaf area index. We compared the final estimates to actual evapotranspiration and actual transpiration calculated with the Penman–Monteith equation, and the modified Penman–Monteith equation, respectively, at the plot scale. The scaled canopy transpiration represented a significant fraction of the forest evapotranspiration, which was always greater than 70%. To understand climate change impacts in forested areas, more accurate actual transpiration estimates are necessary. We suggest our model as a suitable approach to obtain reliable Tplot estimates in forested areas with low tree diversity.en_US
dc.description.reviewstatusRevieweden_US
dc.description.scholarlevelFacultyen_US
dc.description.sponsorshipThis research was funded by the Alberta Ingenuity Fund, NSERC, Consejo Nacional de Ciencia y Tecnología, México, and Universidad Autónoma Metropolitana-Iztapalapa, México.en_US
dc.identifier.citationQuiñonez-Piñón, M. R. & Valeo, C. (2020). “Modelling canopy actual transpiration in the boreal forest with reduced error propagation.” Atmosphere, 11(11), 1158. https://doi.org/10.3390/atmos11111158en_US
dc.identifier.urihttps://doi.org/10.3390/atmos11111158
dc.identifier.urihttp://hdl.handle.net/1828/14528
dc.language.isoenen_US
dc.publisherAtmosphereen_US
dc.subjectclimate change
dc.subjectactual evapotranspiration
dc.subjectmodified Penman-Monteith
dc.subjectsap flow
dc.subjectscaling methods
dc.subjectallometric correlations
dc.subjectsapwood depth
dc.subjectsapwood area
dc.subjectleaf area index
dc.subject.departmentDepartment of Mechanical Engineering
dc.titleModelling canopy actual transpiration in the boreal forest with reduced error propagationen_US
dc.typeArticleen_US

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