Recent Changes in the ISBA‐CTRIP Land Surface System for Use in the CNRM‐CM6 Climate Model and in Global Off‐Line Hydrological Applications
Abstract In recent years, significant efforts have been made to upgrade physical processes in the ISBA‐CTRIP land surface system for use in fully coupled climate studies using the new CNRM‐CM6 climate model or in stand‐alone mode for global hydrological applications. Here we provide a thorough descr...
Published in: | Journal of Advances in Modeling Earth Systems |
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Online Access: | https://doi.org/10.1029/2018MS001545 https://doaj.org/article/47b9d95da58b405db76acf1b73846d94 |
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ftdoajarticles:oai:doaj.org/article:47b9d95da58b405db76acf1b73846d94 2023-05-15T17:58:09+02:00 Recent Changes in the ISBA‐CTRIP Land Surface System for Use in the CNRM‐CM6 Climate Model and in Global Off‐Line Hydrological Applications Bertrand Decharme Christine Delire Marie Minvielle Jeanne Colin Jean‐Pierre Vergnes Antoinette Alias David Saint‐Martin Roland Séférian Stéphane Sénési Aurore Voldoire 2019-05-01T00:00:00Z https://doi.org/10.1029/2018MS001545 https://doaj.org/article/47b9d95da58b405db76acf1b73846d94 EN eng American Geophysical Union (AGU) https://doi.org/10.1029/2018MS001545 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2018MS001545 https://doaj.org/article/47b9d95da58b405db76acf1b73846d94 Journal of Advances in Modeling Earth Systems, Vol 11, Iss 5, Pp 1207-1252 (2019) land surface processes hydrology snow permafrost Physical geography GB3-5030 Oceanography GC1-1581 article 2019 ftdoajarticles https://doi.org/10.1029/2018MS001545 2022-12-31T12:20:23Z Abstract In recent years, significant efforts have been made to upgrade physical processes in the ISBA‐CTRIP land surface system for use in fully coupled climate studies using the new CNRM‐CM6 climate model or in stand‐alone mode for global hydrological applications. Here we provide a thorough description of the new and improved processes implemented between the CMIP5 and CMIP6 versions of the model and evaluate the hydrology and thermal behavior of the model at the global scale. The soil scheme explicitly solves the one‐dimensional Fourier and Darcy laws throughout the soil, accounting for the dependency of hydraulic and thermal soil properties on soil organic carbon content. The snowpack is represented using a multilayer detailed internal‐process snow scheme. A two‐way dynamic flood scheme is added in which floodplains interact with the soil hydrology through reinfiltration of floodwater and with the overlying atmosphere through surface free‐water evaporation. Finally, groundwater processes are represented via a two‐dimensional diffusive unconfined aquifer scheme allowing upward capillarity rises into the superficial soil. This new system has been evaluated in off‐line mode using two different atmospheric forcings and against a large set of satellite estimates and in situ observations. While this study is not without weaknesses, its results show a real advance in modeling the physical aspects of the land surface with the new ISBA‐CTRIP version compared to the previous system. This increases our confidence that the model is able to represent the land surface physical processes accurately across the globe and in turn contribute to several important scientific and societal issues. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Journal of Advances in Modeling Earth Systems 11 5 1207 1252 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
land surface processes hydrology snow permafrost Physical geography GB3-5030 Oceanography GC1-1581 |
spellingShingle |
land surface processes hydrology snow permafrost Physical geography GB3-5030 Oceanography GC1-1581 Bertrand Decharme Christine Delire Marie Minvielle Jeanne Colin Jean‐Pierre Vergnes Antoinette Alias David Saint‐Martin Roland Séférian Stéphane Sénési Aurore Voldoire Recent Changes in the ISBA‐CTRIP Land Surface System for Use in the CNRM‐CM6 Climate Model and in Global Off‐Line Hydrological Applications |
topic_facet |
land surface processes hydrology snow permafrost Physical geography GB3-5030 Oceanography GC1-1581 |
description |
Abstract In recent years, significant efforts have been made to upgrade physical processes in the ISBA‐CTRIP land surface system for use in fully coupled climate studies using the new CNRM‐CM6 climate model or in stand‐alone mode for global hydrological applications. Here we provide a thorough description of the new and improved processes implemented between the CMIP5 and CMIP6 versions of the model and evaluate the hydrology and thermal behavior of the model at the global scale. The soil scheme explicitly solves the one‐dimensional Fourier and Darcy laws throughout the soil, accounting for the dependency of hydraulic and thermal soil properties on soil organic carbon content. The snowpack is represented using a multilayer detailed internal‐process snow scheme. A two‐way dynamic flood scheme is added in which floodplains interact with the soil hydrology through reinfiltration of floodwater and with the overlying atmosphere through surface free‐water evaporation. Finally, groundwater processes are represented via a two‐dimensional diffusive unconfined aquifer scheme allowing upward capillarity rises into the superficial soil. This new system has been evaluated in off‐line mode using two different atmospheric forcings and against a large set of satellite estimates and in situ observations. While this study is not without weaknesses, its results show a real advance in modeling the physical aspects of the land surface with the new ISBA‐CTRIP version compared to the previous system. This increases our confidence that the model is able to represent the land surface physical processes accurately across the globe and in turn contribute to several important scientific and societal issues. |
format |
Article in Journal/Newspaper |
author |
Bertrand Decharme Christine Delire Marie Minvielle Jeanne Colin Jean‐Pierre Vergnes Antoinette Alias David Saint‐Martin Roland Séférian Stéphane Sénési Aurore Voldoire |
author_facet |
Bertrand Decharme Christine Delire Marie Minvielle Jeanne Colin Jean‐Pierre Vergnes Antoinette Alias David Saint‐Martin Roland Séférian Stéphane Sénési Aurore Voldoire |
author_sort |
Bertrand Decharme |
title |
Recent Changes in the ISBA‐CTRIP Land Surface System for Use in the CNRM‐CM6 Climate Model and in Global Off‐Line Hydrological Applications |
title_short |
Recent Changes in the ISBA‐CTRIP Land Surface System for Use in the CNRM‐CM6 Climate Model and in Global Off‐Line Hydrological Applications |
title_full |
Recent Changes in the ISBA‐CTRIP Land Surface System for Use in the CNRM‐CM6 Climate Model and in Global Off‐Line Hydrological Applications |
title_fullStr |
Recent Changes in the ISBA‐CTRIP Land Surface System for Use in the CNRM‐CM6 Climate Model and in Global Off‐Line Hydrological Applications |
title_full_unstemmed |
Recent Changes in the ISBA‐CTRIP Land Surface System for Use in the CNRM‐CM6 Climate Model and in Global Off‐Line Hydrological Applications |
title_sort |
recent changes in the isba‐ctrip land surface system for use in the cnrm‐cm6 climate model and in global off‐line hydrological applications |
publisher |
American Geophysical Union (AGU) |
publishDate |
2019 |
url |
https://doi.org/10.1029/2018MS001545 https://doaj.org/article/47b9d95da58b405db76acf1b73846d94 |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Journal of Advances in Modeling Earth Systems, Vol 11, Iss 5, Pp 1207-1252 (2019) |
op_relation |
https://doi.org/10.1029/2018MS001545 https://doaj.org/toc/1942-2466 1942-2466 doi:10.1029/2018MS001545 https://doaj.org/article/47b9d95da58b405db76acf1b73846d94 |
op_doi |
https://doi.org/10.1029/2018MS001545 |
container_title |
Journal of Advances in Modeling Earth Systems |
container_volume |
11 |
container_issue |
5 |
container_start_page |
1207 |
op_container_end_page |
1252 |
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