Two distinct waves of greening in northeastern Canada: summer warming does not tell the whole story
International audience Arctic vegetation cover has been increasing over the last 40 years, which has been attributed mostly to increases in temperature. Yet, the temporal dimension of this greening remains overlooked as it is often viewed as a monotonic trend. Here, using 11 year long rolling window...
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Online Access: | https://hal.science/hal-03701019 https://hal.science/hal-03701019/document https://hal.science/hal-03701019/file/Bayle_2022_Environ._Res._Lett._17_064051.pdf https://doi.org/10.1088/1748-9326/ac74d6 |
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ftunivnantes:oai:HAL:hal-03701019v1 2023-05-15T14:57:43+02:00 Two distinct waves of greening in northeastern Canada: summer warming does not tell the whole story Bayle, Arthur Roy, Alexandre Dedieu, Jean-Pierre Boudreau, Stéphane Choler, Philippe Lévesque, Esther Laboratoire d'Ecologie Alpine (LECA ) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA) Centre d'Etudes Nordiques (CEN) Université Laval Québec (ULaval) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Université du Québec à Trois-Rivières (UQTR) LabEx DRIIHM, French program ‘Investissements d’Avenir’ (ANR-11-LABX0010) Polar Knowledge Canada ArcticNet (Network of Centres of Excellenceof Canada) Crown-Indigenous Relations and Northern Affairs Canada (Indigenous Community-Based Climate Monitoring Program) NSERC-discovery grant ANR-11-LABX-0010,DRIIHM / IRDHEI,Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux(2011) 2022 https://hal.science/hal-03701019 https://hal.science/hal-03701019/document https://hal.science/hal-03701019/file/Bayle_2022_Environ._Res._Lett._17_064051.pdf https://doi.org/10.1088/1748-9326/ac74d6 en eng HAL CCSD IOP Publishing info:eu-repo/semantics/altIdentifier/doi/10.1088/1748-9326/ac74d6 hal-03701019 https://hal.science/hal-03701019 https://hal.science/hal-03701019/document https://hal.science/hal-03701019/file/Bayle_2022_Environ._Res._Lett._17_064051.pdf doi:10.1088/1748-9326/ac74d6 info:eu-repo/semantics/OpenAccess ISSN: 1748-9326 Environmental Research Letters https://hal.science/hal-03701019 Environmental Research Letters, 2022, 17 (6), pp.064051. ⟨10.1088/1748-9326/ac74d6⟩ OHMi Nunavik greening Landsat high latitude vegetation NDVI [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2022 ftunivnantes https://doi.org/10.1088/1748-9326/ac74d6 2023-03-01T01:37:15Z International audience Arctic vegetation cover has been increasing over the last 40 years, which has been attributed mostly to increases in temperature. Yet, the temporal dimension of this greening remains overlooked as it is often viewed as a monotonic trend. Here, using 11 year long rolling windows on 30 m resolution Landsat data, we examined the temporal variations in greening in northeastern Canada and its dependence on summer warming. We found two significant and distinct waves of greening, centred around 1996 and 2011, and observed in all land cover types (from boreal forest to arctic tundra). The first wave was more intense and correlated with increasing summer temperature while no such relation was found for the weaker second wave. More specifically, the greening lasted longer at higher elevation during the first wave which translates to a prolonged correlation between greening and summer warming compared to low-altitude vegetation. Our work explored a forsaken complexity of high latitude greening trends and associated drivers and has raised new questions that warrant further research highlighting the importance to include temporal dimension to greening analyses in conjunction with common spatial gradients. Article in Journal/Newspaper Arctic Tundra Nunavik Université de Nantes: HAL-UNIV-NANTES Arctic Nunavik Canada Environmental Research Letters 17 6 064051 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
OHMi Nunavik greening Landsat high latitude vegetation NDVI [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
OHMi Nunavik greening Landsat high latitude vegetation NDVI [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Bayle, Arthur Roy, Alexandre Dedieu, Jean-Pierre Boudreau, Stéphane Choler, Philippe Lévesque, Esther Two distinct waves of greening in northeastern Canada: summer warming does not tell the whole story |
topic_facet |
OHMi Nunavik greening Landsat high latitude vegetation NDVI [SDE.MCG]Environmental Sciences/Global Changes [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience Arctic vegetation cover has been increasing over the last 40 years, which has been attributed mostly to increases in temperature. Yet, the temporal dimension of this greening remains overlooked as it is often viewed as a monotonic trend. Here, using 11 year long rolling windows on 30 m resolution Landsat data, we examined the temporal variations in greening in northeastern Canada and its dependence on summer warming. We found two significant and distinct waves of greening, centred around 1996 and 2011, and observed in all land cover types (from boreal forest to arctic tundra). The first wave was more intense and correlated with increasing summer temperature while no such relation was found for the weaker second wave. More specifically, the greening lasted longer at higher elevation during the first wave which translates to a prolonged correlation between greening and summer warming compared to low-altitude vegetation. Our work explored a forsaken complexity of high latitude greening trends and associated drivers and has raised new questions that warrant further research highlighting the importance to include temporal dimension to greening analyses in conjunction with common spatial gradients. |
author2 |
Laboratoire d'Ecologie Alpine (LECA ) Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA) Centre d'Etudes Nordiques (CEN) Université Laval Québec (ULaval) Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) Université du Québec à Trois-Rivières (UQTR) LabEx DRIIHM, French program ‘Investissements d’Avenir’ (ANR-11-LABX0010) Polar Knowledge Canada ArcticNet (Network of Centres of Excellenceof Canada) Crown-Indigenous Relations and Northern Affairs Canada (Indigenous Community-Based Climate Monitoring Program) NSERC-discovery grant ANR-11-LABX-0010,DRIIHM / IRDHEI,Dispositif de recherche interdisciplinaire sur les Interactions Hommes-Milieux(2011) |
format |
Article in Journal/Newspaper |
author |
Bayle, Arthur Roy, Alexandre Dedieu, Jean-Pierre Boudreau, Stéphane Choler, Philippe Lévesque, Esther |
author_facet |
Bayle, Arthur Roy, Alexandre Dedieu, Jean-Pierre Boudreau, Stéphane Choler, Philippe Lévesque, Esther |
author_sort |
Bayle, Arthur |
title |
Two distinct waves of greening in northeastern Canada: summer warming does not tell the whole story |
title_short |
Two distinct waves of greening in northeastern Canada: summer warming does not tell the whole story |
title_full |
Two distinct waves of greening in northeastern Canada: summer warming does not tell the whole story |
title_fullStr |
Two distinct waves of greening in northeastern Canada: summer warming does not tell the whole story |
title_full_unstemmed |
Two distinct waves of greening in northeastern Canada: summer warming does not tell the whole story |
title_sort |
two distinct waves of greening in northeastern canada: summer warming does not tell the whole story |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-03701019 https://hal.science/hal-03701019/document https://hal.science/hal-03701019/file/Bayle_2022_Environ._Res._Lett._17_064051.pdf https://doi.org/10.1088/1748-9326/ac74d6 |
geographic |
Arctic Nunavik Canada |
geographic_facet |
Arctic Nunavik Canada |
genre |
Arctic Tundra Nunavik |
genre_facet |
Arctic Tundra Nunavik |
op_source |
ISSN: 1748-9326 Environmental Research Letters https://hal.science/hal-03701019 Environmental Research Letters, 2022, 17 (6), pp.064051. ⟨10.1088/1748-9326/ac74d6⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1088/1748-9326/ac74d6 hal-03701019 https://hal.science/hal-03701019 https://hal.science/hal-03701019/document https://hal.science/hal-03701019/file/Bayle_2022_Environ._Res._Lett._17_064051.pdf doi:10.1088/1748-9326/ac74d6 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1088/1748-9326/ac74d6 |
container_title |
Environmental Research Letters |
container_volume |
17 |
container_issue |
6 |
container_start_page |
064051 |
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1766329845571125248 |