The effect of vertically resolved soil biogeochemistry and alternate soil C and N models on C dynamics of CLM4
Soils are a crucial component of the Earth system; they comprise a large portion of terrestrial carbon stocks, mediate the supply and demand of nutrients, and influence the overall response of terrestrial ecosystems to perturbations. In this paper, we develop a new soil biogeochemistry model for the...
Published in: | Biogeosciences |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2013
|
Subjects: | |
Online Access: | https://doi.org/10.5194/bg-10-7109-2013 https://noa.gwlb.de/receive/cop_mods_00021140 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00021095/bg-10-7109-2013.pdf https://bg.copernicus.org/articles/10/7109/2013/bg-10-7109-2013.pdf |
id |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00021140 |
---|---|
record_format |
openpolar |
spelling |
ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00021140 2023-05-15T17:57:59+02:00 The effect of vertically resolved soil biogeochemistry and alternate soil C and N models on C dynamics of CLM4 Koven, C. D. Riley, W. J. Subin, Z. M. Tang, J. Y. Torn, M. S. Collins, W. D. Bonan, G. B. Lawrence, D. M. Swenson, S. C. 2013-11 electronic https://doi.org/10.5194/bg-10-7109-2013 https://noa.gwlb.de/receive/cop_mods_00021140 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00021095/bg-10-7109-2013.pdf https://bg.copernicus.org/articles/10/7109/2013/bg-10-7109-2013.pdf eng eng Copernicus Publications Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-10-7109-2013 https://noa.gwlb.de/receive/cop_mods_00021140 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00021095/bg-10-7109-2013.pdf https://bg.copernicus.org/articles/10/7109/2013/bg-10-7109-2013.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2013 ftnonlinearchiv https://doi.org/10.5194/bg-10-7109-2013 2022-02-08T22:51:48Z Soils are a crucial component of the Earth system; they comprise a large portion of terrestrial carbon stocks, mediate the supply and demand of nutrients, and influence the overall response of terrestrial ecosystems to perturbations. In this paper, we develop a new soil biogeochemistry model for the Community Land Model, version 4 (CLM4). The new model includes a vertical dimension to carbon (C) and nitrogen (N) pools and transformations, a more realistic treatment of mineral N pools, flexible treatment of the dynamics of decomposing carbon, and a radiocarbon (14C) tracer. We describe the model structure, compare it with site-level and global observations, and discuss the overall effect of the revised soil model on Community Land Model (CLM) carbon dynamics. Site-level comparisons to radiocarbon and bulk soil C observations support the idea that soil C turnover is reduced at depth beyond what is expected from environmental controls for temperature, moisture, and oxygen that are considered in the model. In better agreement with observations, the revised soil model predicts substantially more and older soil C, particularly at high latitudes, where it resolves a permafrost soil C pool. In addition, the 20th century-C dynamics of the model are more realistic than those of the baseline model, with more terrestrial C uptake over the 20th century due to reduced N downregulation and longer turnover times for decomposing C. Article in Journal/Newspaper permafrost Niedersächsisches Online-Archiv NOA Biogeosciences 10 11 7109 7131 |
institution |
Open Polar |
collection |
Niedersächsisches Online-Archiv NOA |
op_collection_id |
ftnonlinearchiv |
language |
English |
topic |
article Verlagsveröffentlichung |
spellingShingle |
article Verlagsveröffentlichung Koven, C. D. Riley, W. J. Subin, Z. M. Tang, J. Y. Torn, M. S. Collins, W. D. Bonan, G. B. Lawrence, D. M. Swenson, S. C. The effect of vertically resolved soil biogeochemistry and alternate soil C and N models on C dynamics of CLM4 |
topic_facet |
article Verlagsveröffentlichung |
description |
Soils are a crucial component of the Earth system; they comprise a large portion of terrestrial carbon stocks, mediate the supply and demand of nutrients, and influence the overall response of terrestrial ecosystems to perturbations. In this paper, we develop a new soil biogeochemistry model for the Community Land Model, version 4 (CLM4). The new model includes a vertical dimension to carbon (C) and nitrogen (N) pools and transformations, a more realistic treatment of mineral N pools, flexible treatment of the dynamics of decomposing carbon, and a radiocarbon (14C) tracer. We describe the model structure, compare it with site-level and global observations, and discuss the overall effect of the revised soil model on Community Land Model (CLM) carbon dynamics. Site-level comparisons to radiocarbon and bulk soil C observations support the idea that soil C turnover is reduced at depth beyond what is expected from environmental controls for temperature, moisture, and oxygen that are considered in the model. In better agreement with observations, the revised soil model predicts substantially more and older soil C, particularly at high latitudes, where it resolves a permafrost soil C pool. In addition, the 20th century-C dynamics of the model are more realistic than those of the baseline model, with more terrestrial C uptake over the 20th century due to reduced N downregulation and longer turnover times for decomposing C. |
format |
Article in Journal/Newspaper |
author |
Koven, C. D. Riley, W. J. Subin, Z. M. Tang, J. Y. Torn, M. S. Collins, W. D. Bonan, G. B. Lawrence, D. M. Swenson, S. C. |
author_facet |
Koven, C. D. Riley, W. J. Subin, Z. M. Tang, J. Y. Torn, M. S. Collins, W. D. Bonan, G. B. Lawrence, D. M. Swenson, S. C. |
author_sort |
Koven, C. D. |
title |
The effect of vertically resolved soil biogeochemistry and alternate soil C and N models on C dynamics of CLM4 |
title_short |
The effect of vertically resolved soil biogeochemistry and alternate soil C and N models on C dynamics of CLM4 |
title_full |
The effect of vertically resolved soil biogeochemistry and alternate soil C and N models on C dynamics of CLM4 |
title_fullStr |
The effect of vertically resolved soil biogeochemistry and alternate soil C and N models on C dynamics of CLM4 |
title_full_unstemmed |
The effect of vertically resolved soil biogeochemistry and alternate soil C and N models on C dynamics of CLM4 |
title_sort |
effect of vertically resolved soil biogeochemistry and alternate soil c and n models on c dynamics of clm4 |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/bg-10-7109-2013 https://noa.gwlb.de/receive/cop_mods_00021140 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00021095/bg-10-7109-2013.pdf https://bg.copernicus.org/articles/10/7109/2013/bg-10-7109-2013.pdf |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-10-7109-2013 https://noa.gwlb.de/receive/cop_mods_00021140 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00021095/bg-10-7109-2013.pdf https://bg.copernicus.org/articles/10/7109/2013/bg-10-7109-2013.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/bg-10-7109-2013 |
container_title |
Biogeosciences |
container_volume |
10 |
container_issue |
11 |
container_start_page |
7109 |
op_container_end_page |
7131 |
_version_ |
1766166501305352192 |