The effect of a dynamic soil scheme on the climate of the mid-Holocene and the Last Glacial Maximum
In order to account for coupled climate-soil processes, we have developed a soil scheme, which is asynchronously coupled to a comprehensive climate model with dynamic vegetation. This scheme considers vegetation as the primary control of changes in physical soil characteristics. We test the scheme f...
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ftawi:oai:epic.awi.de:40830 2024-09-15T18:38:40+00:00 The effect of a dynamic soil scheme on the climate of the mid-Holocene and the Last Glacial Maximum Stärz, Michael Lohmann, Gerrit Knorr, Gregor 2016 https://epic.awi.de/id/eprint/40830/ https://hdl.handle.net/10013/epic.47829 unknown Stärz, M. , Lohmann, G. orcid:0000-0003-2089-733X and Knorr, G. orcid:0000-0002-8317-5046 (2016) The effect of a dynamic soil scheme on the climate of the mid-Holocene and the Last Glacial Maximum , EGU General Assembly 2016, Vienna, 17 April 2016 - 22 April 2016 . hdl:10013/epic.47829 EPIC3EGU General Assembly 2016, Vienna, 2016-04-17-2016-04-22 Conference notRev 2016 ftawi 2024-06-24T04:14:20Z In order to account for coupled climate-soil processes, we have developed a soil scheme, which is asynchronously coupled to a comprehensive climate model with dynamic vegetation. This scheme considers vegetation as the primary control of changes in physical soil characteristics. We test the scheme for a warmer (mid-Holocene) and colder (Last Glacial Maximum) climate relative to the preindustrial climate. We find that the computed changes of physical soil characteristics lead to significant amplification of global climate anomalies, representing a positive feedback. The inclusion of the soil feedback yields an extra surface warming of 0.24°C for the mid-Holocene and an additional global cooling of 1.07°C for the Last Glacial Maximum. Transition zones such as desert/savannah and taiga/tundra exhibit a pronounced response in the model version with dynamic soil properties. Energy balance model analyses reveal that our soil scheme amplifies the temperature anomalies in the mid-to-high northern latitudes via changes in the planetary albedo and the effective longwave emissivity. As a result of the modified soil treatment and the positive feedback on climate, part of the underestimated mid-Holocene temperature response to orbital forcing can be reconciled in the model. Conference Object taiga Tundra Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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In order to account for coupled climate-soil processes, we have developed a soil scheme, which is asynchronously coupled to a comprehensive climate model with dynamic vegetation. This scheme considers vegetation as the primary control of changes in physical soil characteristics. We test the scheme for a warmer (mid-Holocene) and colder (Last Glacial Maximum) climate relative to the preindustrial climate. We find that the computed changes of physical soil characteristics lead to significant amplification of global climate anomalies, representing a positive feedback. The inclusion of the soil feedback yields an extra surface warming of 0.24°C for the mid-Holocene and an additional global cooling of 1.07°C for the Last Glacial Maximum. Transition zones such as desert/savannah and taiga/tundra exhibit a pronounced response in the model version with dynamic soil properties. Energy balance model analyses reveal that our soil scheme amplifies the temperature anomalies in the mid-to-high northern latitudes via changes in the planetary albedo and the effective longwave emissivity. As a result of the modified soil treatment and the positive feedback on climate, part of the underestimated mid-Holocene temperature response to orbital forcing can be reconciled in the model. |
format |
Conference Object |
author |
Stärz, Michael Lohmann, Gerrit Knorr, Gregor |
spellingShingle |
Stärz, Michael Lohmann, Gerrit Knorr, Gregor The effect of a dynamic soil scheme on the climate of the mid-Holocene and the Last Glacial Maximum |
author_facet |
Stärz, Michael Lohmann, Gerrit Knorr, Gregor |
author_sort |
Stärz, Michael |
title |
The effect of a dynamic soil scheme on the climate of the mid-Holocene and the Last Glacial Maximum |
title_short |
The effect of a dynamic soil scheme on the climate of the mid-Holocene and the Last Glacial Maximum |
title_full |
The effect of a dynamic soil scheme on the climate of the mid-Holocene and the Last Glacial Maximum |
title_fullStr |
The effect of a dynamic soil scheme on the climate of the mid-Holocene and the Last Glacial Maximum |
title_full_unstemmed |
The effect of a dynamic soil scheme on the climate of the mid-Holocene and the Last Glacial Maximum |
title_sort |
effect of a dynamic soil scheme on the climate of the mid-holocene and the last glacial maximum |
publishDate |
2016 |
url |
https://epic.awi.de/id/eprint/40830/ https://hdl.handle.net/10013/epic.47829 |
genre |
taiga Tundra |
genre_facet |
taiga Tundra |
op_source |
EPIC3EGU General Assembly 2016, Vienna, 2016-04-17-2016-04-22 |
op_relation |
Stärz, M. , Lohmann, G. orcid:0000-0003-2089-733X and Knorr, G. orcid:0000-0002-8317-5046 (2016) The effect of a dynamic soil scheme on the climate of the mid-Holocene and the Last Glacial Maximum , EGU General Assembly 2016, Vienna, 17 April 2016 - 22 April 2016 . hdl:10013/epic.47829 |
_version_ |
1810483073539637248 |