Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America
An ecosystem model, ecosys, has been used to examine the effects of recent warming on carbon exchange in higher latitudes of North America. Model results indicated that gradual warming during the past 30 years has increased net ecosystem productivity (NEP) and leaf area index (LAI). Spring increases...
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Canadian Science Publishing
2018
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ftdoajarticles:oai:doaj.org/article:0f3a3a12f7e943ceb3eaad7e9ed1d9dc 2023-05-15T14:23:36+02:00 Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America Zelalem A. Mekonnen Robert F. Grant Christopher Schwalm 2018-09-01T00:00:00Z https://doi.org/10.1139/as-2016-0009 https://doaj.org/article/0f3a3a12f7e943ceb3eaad7e9ed1d9dc EN FR eng fre Canadian Science Publishing https://doi.org/10.1139/as-2016-0009 https://doaj.org/toc/2368-7460 doi:10.1139/as-2016-0009 2368-7460 https://doaj.org/article/0f3a3a12f7e943ceb3eaad7e9ed1d9dc Arctic Science, Vol 4, Iss 4, Pp 471-484 (2018) ecosys thawing permafrost climate change arctic carbon cycle seasonal carbon dynamics Environmental sciences GE1-350 Environmental engineering TA170-171 article 2018 ftdoajarticles https://doi.org/10.1139/as-2016-0009 2022-12-31T12:58:52Z An ecosystem model, ecosys, has been used to examine the effects of recent warming on carbon exchange in higher latitudes of North America. Model results indicated that gradual warming during the past 30 years has increased net ecosystem productivity (NEP) and leaf area index (LAI). Spring increases in LAI advanced by 2.3 days decade−1 and decreases in autumn were delayed by 5.0 days decade−1 from 1982 to 2006. These advances and delays were corroborated by similar trends observed in the normalized difference vegetation index. NEP modelled during this period increased at an average rate of 17.6 Tg C decade−1. Increasing carbon losses modelled with soil warming in autumn, when thaw depth was greatest, offset 34% of increasing carbon gains modelled in spring. If autumn warming continues, carbon losses in this season may further offset enhanced carbon sequestration in spring. Article in Journal/Newspaper Arctic Arctic Climate change permafrost Directory of Open Access Journals: DOAJ Articles Arctic Arctic Science 4 4 471 484 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English French |
topic |
ecosys thawing permafrost climate change arctic carbon cycle seasonal carbon dynamics Environmental sciences GE1-350 Environmental engineering TA170-171 |
spellingShingle |
ecosys thawing permafrost climate change arctic carbon cycle seasonal carbon dynamics Environmental sciences GE1-350 Environmental engineering TA170-171 Zelalem A. Mekonnen Robert F. Grant Christopher Schwalm Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America |
topic_facet |
ecosys thawing permafrost climate change arctic carbon cycle seasonal carbon dynamics Environmental sciences GE1-350 Environmental engineering TA170-171 |
description |
An ecosystem model, ecosys, has been used to examine the effects of recent warming on carbon exchange in higher latitudes of North America. Model results indicated that gradual warming during the past 30 years has increased net ecosystem productivity (NEP) and leaf area index (LAI). Spring increases in LAI advanced by 2.3 days decade−1 and decreases in autumn were delayed by 5.0 days decade−1 from 1982 to 2006. These advances and delays were corroborated by similar trends observed in the normalized difference vegetation index. NEP modelled during this period increased at an average rate of 17.6 Tg C decade−1. Increasing carbon losses modelled with soil warming in autumn, when thaw depth was greatest, offset 34% of increasing carbon gains modelled in spring. If autumn warming continues, carbon losses in this season may further offset enhanced carbon sequestration in spring. |
format |
Article in Journal/Newspaper |
author |
Zelalem A. Mekonnen Robert F. Grant Christopher Schwalm |
author_facet |
Zelalem A. Mekonnen Robert F. Grant Christopher Schwalm |
author_sort |
Zelalem A. Mekonnen |
title |
Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America |
title_short |
Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America |
title_full |
Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America |
title_fullStr |
Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America |
title_full_unstemmed |
Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America |
title_sort |
modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of north america |
publisher |
Canadian Science Publishing |
publishDate |
2018 |
url |
https://doi.org/10.1139/as-2016-0009 https://doaj.org/article/0f3a3a12f7e943ceb3eaad7e9ed1d9dc |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Arctic Climate change permafrost |
genre_facet |
Arctic Arctic Climate change permafrost |
op_source |
Arctic Science, Vol 4, Iss 4, Pp 471-484 (2018) |
op_relation |
https://doi.org/10.1139/as-2016-0009 https://doaj.org/toc/2368-7460 doi:10.1139/as-2016-0009 2368-7460 https://doaj.org/article/0f3a3a12f7e943ceb3eaad7e9ed1d9dc |
op_doi |
https://doi.org/10.1139/as-2016-0009 |
container_title |
Arctic Science |
container_volume |
4 |
container_issue |
4 |
container_start_page |
471 |
op_container_end_page |
484 |
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1766296113506156544 |