Temperature and Snow-Mediated Moisture Controls of Summer Photosynthetic Activity in Northern Terrestrial Ecosystems between 1982 and 2011
International audience Recent warming has stimulated the productivity of boreal and Arctic vegetation by reducing temperature limitations. However, several studies have hypothesized that warming may have also increased moisture limitations because of intensified summer drought severity. Establishing...
Published in: | Remote Sensing |
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Online Access: | https://hal.archives-ouvertes.fr/hal-03210629 https://hal.archives-ouvertes.fr/hal-03210629/document https://hal.archives-ouvertes.fr/hal-03210629/file/remotesensing-06-01390.pdf https://doi.org/10.3390/rs6021390 |
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ftccsdartic:oai:HAL:hal-03210629v1 2023-05-15T15:15:57+02:00 Temperature and Snow-Mediated Moisture Controls of Summer Photosynthetic Activity in Northern Terrestrial Ecosystems between 1982 and 2011 Barichivich, Jonathan Briffa, Keith Myneni, Ranga van der Schrier, Gerard Dorigo, Wouter Tucker, Compton Osborn, Timothy Melvin, Thomas Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) University of East Anglia Norwich (UEA) Boston University Boston (BU) Royal Netherlands Meteorological Institute (KNMI) Vienna University of Technology (TU Wien) NASA Goddard Space Flight Center (GSFC) 2014 https://hal.archives-ouvertes.fr/hal-03210629 https://hal.archives-ouvertes.fr/hal-03210629/document https://hal.archives-ouvertes.fr/hal-03210629/file/remotesensing-06-01390.pdf https://doi.org/10.3390/rs6021390 en eng HAL CCSD MDPI info:eu-repo/semantics/altIdentifier/doi/10.3390/rs6021390 hal-03210629 https://hal.archives-ouvertes.fr/hal-03210629 https://hal.archives-ouvertes.fr/hal-03210629/document https://hal.archives-ouvertes.fr/hal-03210629/file/remotesensing-06-01390.pdf doi:10.3390/rs6021390 info:eu-repo/semantics/OpenAccess ISSN: 2072-4292 Remote Sensing https://hal.archives-ouvertes.fr/hal-03210629 Remote Sensing, MDPI, 2014, 6 (2), pp.1390-1431. ⟨10.3390/rs6021390⟩ boreal forest snowpack drought soil moisture NDVI3g scPDSI [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology info:eu-repo/semantics/article Journal articles 2014 ftccsdartic https://doi.org/10.3390/rs6021390 2021-12-19T00:13:46Z International audience Recent warming has stimulated the productivity of boreal and Arctic vegetation by reducing temperature limitations. However, several studies have hypothesized that warming may have also increased moisture limitations because of intensified summer drought severity. Establishing the connections between warming and drought stress has been difficult because soil moisture observations are scarce. Here we use recently developed gridded datasets of moisture variability to investigate the links between warming and changes in available soil moisture and summer vegetation photosynthetic activity at northern latitudes (>45°N) based on the Normalized Difference Vegetation Index (NDVI) since 1982. Moisture and temperature exert a significant influence on the interannual variability of summer NDVI over about 29% (mean r2 = 0.29 ± 0.16) and 43% (mean r2 = 0.25 ± 0.12) of the northern vegetated land, respectively. Rapid summer warming since the late 1980s (~0.7 °C) has increased evapotranspiration demand and consequently summer drought severity, but contrary to earlier suggestions it has not changed the dominant climate controls of NDVI over time. Furthermore, changes in snow dynamics (accumulation and melting) appear to be more important than increased evaporative demand in controlling changes in summer soil moisture availability and NDVI in moisture-sensitive regions of the boreal forest. In boreal North America, forest NDVI declines are more consistent with reduced snowpack rather than with temperature-induced increases in evaporative demand as suggested in earlier studies. Moreover, summer NDVI variability over about 28% of the northern vegetated land is not significantly associated with moisture or temperature variability, yet most of this land shows increasing NDVI trends. These results suggest that changes in snow accumulation and melt, together with other possibly non-climatic factors are likely to play a significant role in modulating regional ecosystem responses to the projected warming and ... Article in Journal/Newspaper Arctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Arctic Remote Sensing 6 2 1390 1431 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
boreal forest snowpack drought soil moisture NDVI3g scPDSI [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology |
spellingShingle |
boreal forest snowpack drought soil moisture NDVI3g scPDSI [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology Barichivich, Jonathan Briffa, Keith Myneni, Ranga van der Schrier, Gerard Dorigo, Wouter Tucker, Compton Osborn, Timothy Melvin, Thomas Temperature and Snow-Mediated Moisture Controls of Summer Photosynthetic Activity in Northern Terrestrial Ecosystems between 1982 and 2011 |
topic_facet |
boreal forest snowpack drought soil moisture NDVI3g scPDSI [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology |
description |
International audience Recent warming has stimulated the productivity of boreal and Arctic vegetation by reducing temperature limitations. However, several studies have hypothesized that warming may have also increased moisture limitations because of intensified summer drought severity. Establishing the connections between warming and drought stress has been difficult because soil moisture observations are scarce. Here we use recently developed gridded datasets of moisture variability to investigate the links between warming and changes in available soil moisture and summer vegetation photosynthetic activity at northern latitudes (>45°N) based on the Normalized Difference Vegetation Index (NDVI) since 1982. Moisture and temperature exert a significant influence on the interannual variability of summer NDVI over about 29% (mean r2 = 0.29 ± 0.16) and 43% (mean r2 = 0.25 ± 0.12) of the northern vegetated land, respectively. Rapid summer warming since the late 1980s (~0.7 °C) has increased evapotranspiration demand and consequently summer drought severity, but contrary to earlier suggestions it has not changed the dominant climate controls of NDVI over time. Furthermore, changes in snow dynamics (accumulation and melting) appear to be more important than increased evaporative demand in controlling changes in summer soil moisture availability and NDVI in moisture-sensitive regions of the boreal forest. In boreal North America, forest NDVI declines are more consistent with reduced snowpack rather than with temperature-induced increases in evaporative demand as suggested in earlier studies. Moreover, summer NDVI variability over about 28% of the northern vegetated land is not significantly associated with moisture or temperature variability, yet most of this land shows increasing NDVI trends. These results suggest that changes in snow accumulation and melt, together with other possibly non-climatic factors are likely to play a significant role in modulating regional ecosystem responses to the projected warming and ... |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) University of East Anglia Norwich (UEA) Boston University Boston (BU) Royal Netherlands Meteorological Institute (KNMI) Vienna University of Technology (TU Wien) NASA Goddard Space Flight Center (GSFC) |
format |
Article in Journal/Newspaper |
author |
Barichivich, Jonathan Briffa, Keith Myneni, Ranga van der Schrier, Gerard Dorigo, Wouter Tucker, Compton Osborn, Timothy Melvin, Thomas |
author_facet |
Barichivich, Jonathan Briffa, Keith Myneni, Ranga van der Schrier, Gerard Dorigo, Wouter Tucker, Compton Osborn, Timothy Melvin, Thomas |
author_sort |
Barichivich, Jonathan |
title |
Temperature and Snow-Mediated Moisture Controls of Summer Photosynthetic Activity in Northern Terrestrial Ecosystems between 1982 and 2011 |
title_short |
Temperature and Snow-Mediated Moisture Controls of Summer Photosynthetic Activity in Northern Terrestrial Ecosystems between 1982 and 2011 |
title_full |
Temperature and Snow-Mediated Moisture Controls of Summer Photosynthetic Activity in Northern Terrestrial Ecosystems between 1982 and 2011 |
title_fullStr |
Temperature and Snow-Mediated Moisture Controls of Summer Photosynthetic Activity in Northern Terrestrial Ecosystems between 1982 and 2011 |
title_full_unstemmed |
Temperature and Snow-Mediated Moisture Controls of Summer Photosynthetic Activity in Northern Terrestrial Ecosystems between 1982 and 2011 |
title_sort |
temperature and snow-mediated moisture controls of summer photosynthetic activity in northern terrestrial ecosystems between 1982 and 2011 |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.archives-ouvertes.fr/hal-03210629 https://hal.archives-ouvertes.fr/hal-03210629/document https://hal.archives-ouvertes.fr/hal-03210629/file/remotesensing-06-01390.pdf https://doi.org/10.3390/rs6021390 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
ISSN: 2072-4292 Remote Sensing https://hal.archives-ouvertes.fr/hal-03210629 Remote Sensing, MDPI, 2014, 6 (2), pp.1390-1431. ⟨10.3390/rs6021390⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/rs6021390 hal-03210629 https://hal.archives-ouvertes.fr/hal-03210629 https://hal.archives-ouvertes.fr/hal-03210629/document https://hal.archives-ouvertes.fr/hal-03210629/file/remotesensing-06-01390.pdf doi:10.3390/rs6021390 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3390/rs6021390 |
container_title |
Remote Sensing |
container_volume |
6 |
container_issue |
2 |
container_start_page |
1390 |
op_container_end_page |
1431 |
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1766346268734390272 |