Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America1
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...
Published in: | Arctic Science |
---|---|
Main Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
eScholarship, University of California
2018
|
Subjects: | |
Online Access: | https://escholarship.org/uc/item/79q1w4rt https://doi.org/10.1139/as-2016-0009 |
id |
ftcdlib:oai:escholarship.org:ark:/13030/qt79q1w4rt |
---|---|
record_format |
openpolar |
spelling |
ftcdlib:oai:escholarship.org:ark:/13030/qt79q1w4rt 2024-09-15T17:50:03+00:00 Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America1 Mekonnen, Zelalem A Grant, Robert F Schwalm, Christopher 471 - 484 2018-12-01 https://escholarship.org/uc/item/79q1w4rt https://doi.org/10.1139/as-2016-0009 unknown eScholarship, University of California qt79q1w4rt https://escholarship.org/uc/item/79q1w4rt doi:10.1139/as-2016-0009 public Arctic Science, vol 4, iss 4 Life on Land ecosys thawing permafrost climate change Arctic carbon cycle seasonal carbon dynamics article 2018 ftcdlib https://doi.org/10.1139/as-2016-0009 2024-06-28T06:28:20Z 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 17.6Tg 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 Climate change permafrost University of California: eScholarship Arctic Science 4 4 471 484 |
institution |
Open Polar |
collection |
University of California: eScholarship |
op_collection_id |
ftcdlib |
language |
unknown |
topic |
Life on Land ecosys thawing permafrost climate change Arctic carbon cycle seasonal carbon dynamics |
spellingShingle |
Life on Land ecosys thawing permafrost climate change Arctic carbon cycle seasonal carbon dynamics Mekonnen, Zelalem A Grant, Robert F Schwalm, Christopher Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America1 |
topic_facet |
Life on Land ecosys thawing permafrost climate change Arctic carbon cycle seasonal carbon dynamics |
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 17.6Tg 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 |
Mekonnen, Zelalem A Grant, Robert F Schwalm, Christopher |
author_facet |
Mekonnen, Zelalem A Grant, Robert F Schwalm, Christopher |
author_sort |
Mekonnen, Zelalem A |
title |
Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America1 |
title_short |
Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America1 |
title_full |
Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America1 |
title_fullStr |
Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America1 |
title_full_unstemmed |
Modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of North America1 |
title_sort |
modelling impacts of recent warming on seasonal carbon exchange in higher latitudes of north america1 |
publisher |
eScholarship, University of California |
publishDate |
2018 |
url |
https://escholarship.org/uc/item/79q1w4rt https://doi.org/10.1139/as-2016-0009 |
op_coverage |
471 - 484 |
genre |
Arctic Climate change permafrost |
genre_facet |
Arctic Climate change permafrost |
op_source |
Arctic Science, vol 4, iss 4 |
op_relation |
qt79q1w4rt https://escholarship.org/uc/item/79q1w4rt doi:10.1139/as-2016-0009 |
op_rights |
public |
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 |
_version_ |
1810291899799437312 |