A simplified permafrost-carbon model for long-term climate studies with the CLIMBER-2 coupled earth system model
We present the development and validation of a simplified permafrost-carbon mechanism for use with the land surface scheme operating in the CLIMBER-2 earth system model. The simplified model estimates the permafrost fraction of each grid cell according to the balance between modelled cold (below 0 °...
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Copernicus Publications
2014
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00017962 2023-05-15T17:55:27+02:00 A simplified permafrost-carbon model for long-term climate studies with the CLIMBER-2 coupled earth system model Crichton, K. A. Roche, D. M. Krinner, G. Chappellaz, J. 2014-12 electronic https://doi.org/10.5194/gmd-7-3111-2014 https://noa.gwlb.de/receive/cop_mods_00017962 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017917/gmd-7-3111-2014.pdf https://gmd.copernicus.org/articles/7/3111/2014/gmd-7-3111-2014.pdf eng eng Copernicus Publications Geoscientific Model Development -- http://www.bibliothek.uni-regensburg.de/ezeit/?2456725 -- http://www.geosci-model-dev.net/ -- 1991-9603 https://doi.org/10.5194/gmd-7-3111-2014 https://noa.gwlb.de/receive/cop_mods_00017962 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017917/gmd-7-3111-2014.pdf https://gmd.copernicus.org/articles/7/3111/2014/gmd-7-3111-2014.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2014 ftnonlinearchiv https://doi.org/10.5194/gmd-7-3111-2014 2022-02-08T22:53:26Z We present the development and validation of a simplified permafrost-carbon mechanism for use with the land surface scheme operating in the CLIMBER-2 earth system model. The simplified model estimates the permafrost fraction of each grid cell according to the balance between modelled cold (below 0 °C) and warm (above 0 °C) days in a year. Areas diagnosed as permafrost are assigned a reduction in soil decomposition rate, thus creating a slow accumulating soil carbon pool. In warming climates, permafrost extent reduces and soil decomposition rates increase, resulting in soil carbon release to the atmosphere. Four accumulation/decomposition rate settings are retained for experiments within the CLIMBER-2(P) model, which are tuned to agree with estimates of total land carbon stocks today and at the last glacial maximum. The distribution of this permafrost-carbon pool is in broad agreement with measurement data for soil carbon content. The level of complexity of the permafrost-carbon model is comparable to other components in the CLIMBER-2 earth system model. Article in Journal/Newspaper permafrost Niedersächsisches Online-Archiv NOA Geoscientific Model Development 7 6 3111 3134 |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Crichton, K. A. Roche, D. M. Krinner, G. Chappellaz, J. A simplified permafrost-carbon model for long-term climate studies with the CLIMBER-2 coupled earth system model |
topic_facet |
article Verlagsveröffentlichung |
description |
We present the development and validation of a simplified permafrost-carbon mechanism for use with the land surface scheme operating in the CLIMBER-2 earth system model. The simplified model estimates the permafrost fraction of each grid cell according to the balance between modelled cold (below 0 °C) and warm (above 0 °C) days in a year. Areas diagnosed as permafrost are assigned a reduction in soil decomposition rate, thus creating a slow accumulating soil carbon pool. In warming climates, permafrost extent reduces and soil decomposition rates increase, resulting in soil carbon release to the atmosphere. Four accumulation/decomposition rate settings are retained for experiments within the CLIMBER-2(P) model, which are tuned to agree with estimates of total land carbon stocks today and at the last glacial maximum. The distribution of this permafrost-carbon pool is in broad agreement with measurement data for soil carbon content. The level of complexity of the permafrost-carbon model is comparable to other components in the CLIMBER-2 earth system model. |
format |
Article in Journal/Newspaper |
author |
Crichton, K. A. Roche, D. M. Krinner, G. Chappellaz, J. |
author_facet |
Crichton, K. A. Roche, D. M. Krinner, G. Chappellaz, J. |
author_sort |
Crichton, K. A. |
title |
A simplified permafrost-carbon model for long-term climate studies with the CLIMBER-2 coupled earth system model |
title_short |
A simplified permafrost-carbon model for long-term climate studies with the CLIMBER-2 coupled earth system model |
title_full |
A simplified permafrost-carbon model for long-term climate studies with the CLIMBER-2 coupled earth system model |
title_fullStr |
A simplified permafrost-carbon model for long-term climate studies with the CLIMBER-2 coupled earth system model |
title_full_unstemmed |
A simplified permafrost-carbon model for long-term climate studies with the CLIMBER-2 coupled earth system model |
title_sort |
simplified permafrost-carbon model for long-term climate studies with the climber-2 coupled earth system model |
publisher |
Copernicus Publications |
publishDate |
2014 |
url |
https://doi.org/10.5194/gmd-7-3111-2014 https://noa.gwlb.de/receive/cop_mods_00017962 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017917/gmd-7-3111-2014.pdf https://gmd.copernicus.org/articles/7/3111/2014/gmd-7-3111-2014.pdf |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
Geoscientific Model Development -- http://www.bibliothek.uni-regensburg.de/ezeit/?2456725 -- http://www.geosci-model-dev.net/ -- 1991-9603 https://doi.org/10.5194/gmd-7-3111-2014 https://noa.gwlb.de/receive/cop_mods_00017962 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00017917/gmd-7-3111-2014.pdf https://gmd.copernicus.org/articles/7/3111/2014/gmd-7-3111-2014.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/gmd-7-3111-2014 |
container_title |
Geoscientific Model Development |
container_volume |
7 |
container_issue |
6 |
container_start_page |
3111 |
op_container_end_page |
3134 |
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1766163391121981440 |