Initial forcing drives the different equilibrium states of Last Glacial Maximum
To simulate the Last Glacial Maximum (LGM), an Earth System Model (COSMOS-ASO, http://cosmos.enes.org/ ), an Ocean(MPIOM, GR30L40)-Atmosphere-Vegetation (ECHAM5-JSBACH, T31L19) fully-coupled model, is utilized according to the 21ka experimental design in PMIP3. Two kinds of sensitive experiments are...
Main Authors: | , |
---|---|
Format: | Conference Object |
Language: | unknown |
Published: |
2011
|
Subjects: | |
Online Access: | https://epic.awi.de/id/eprint/31362/ https://hdl.handle.net/10013/epic.40163 |
id |
ftawi:oai:epic.awi.de:31362 |
---|---|
record_format |
openpolar |
spelling |
ftawi:oai:epic.awi.de:31362 2023-05-15T13:46:52+02:00 Initial forcing drives the different equilibrium states of Last Glacial Maximum Zhang, Xu Lohmann, Gerrit 2011-07 https://epic.awi.de/id/eprint/31362/ https://hdl.handle.net/10013/epic.40163 unknown Zhang, X. orcid:0000-0003-1833-9689 and Lohmann, G. orcid:0000-0003-2089-733X (2011) Initial forcing drives the different equilibrium states of Last Glacial Maximum , XVIII. INQUA Congress, Bern, Swiss, 21 July 2011 - 27 July 2011 . hdl:10013/epic.40163 EPIC3XVIII. INQUA Congress, Bern, Swiss, 2011-07-21-2011-07-27 Conference notRev 2011 ftawi 2021-12-24T15:38:00Z To simulate the Last Glacial Maximum (LGM), an Earth System Model (COSMOS-ASO, http://cosmos.enes.org/ ), an Ocean(MPIOM, GR30L40)-Atmosphere-Vegetation (ECHAM5-JSBACH, T31L19) fully-coupled model, is utilized according to the 21ka experimental design in PMIP3. Two kinds of sensitive experiments are run to test the responses of COSMOS to different initial forcing of the Ocean. The one forced by the Present Ocean features the similar North Atlantic Deep Water (NADW) formation site and a much stronger Atlantic Ocean meridional overturning circulation (AMOC) compared with control run (pre-industrial period, hereafter PI). However, the one initialized by the cold ocean which is derived from the LGM equilibrium of MPI-OM prescribed to the LGM condition of PMIP2, is characterized by a shallower NADW but a AMOC with the similar strength as PI. It is the properties of Antarctic Bottom Water (AABW) that, to some extent, could contribute to the distinct equilibriums. Besides that, Sea Surface Temperature (SST) distribution is much like the reconstruction data (e.g. GLAMAP) although with some uncertainties, as well as the Sea Surface Salinity (SSS). Additionally, two more experiments are run to check out the AMOC’s sensitivity to the depth of Strait of Gibraltar. It is found that the shallower one could account for about 2~3 Sv increase of AMOC in our COSMOS. Conference Object Antarc* Antarctic NADW North Atlantic Deep Water North Atlantic Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) Antarctic |
institution |
Open Polar |
collection |
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
op_collection_id |
ftawi |
language |
unknown |
description |
To simulate the Last Glacial Maximum (LGM), an Earth System Model (COSMOS-ASO, http://cosmos.enes.org/ ), an Ocean(MPIOM, GR30L40)-Atmosphere-Vegetation (ECHAM5-JSBACH, T31L19) fully-coupled model, is utilized according to the 21ka experimental design in PMIP3. Two kinds of sensitive experiments are run to test the responses of COSMOS to different initial forcing of the Ocean. The one forced by the Present Ocean features the similar North Atlantic Deep Water (NADW) formation site and a much stronger Atlantic Ocean meridional overturning circulation (AMOC) compared with control run (pre-industrial period, hereafter PI). However, the one initialized by the cold ocean which is derived from the LGM equilibrium of MPI-OM prescribed to the LGM condition of PMIP2, is characterized by a shallower NADW but a AMOC with the similar strength as PI. It is the properties of Antarctic Bottom Water (AABW) that, to some extent, could contribute to the distinct equilibriums. Besides that, Sea Surface Temperature (SST) distribution is much like the reconstruction data (e.g. GLAMAP) although with some uncertainties, as well as the Sea Surface Salinity (SSS). Additionally, two more experiments are run to check out the AMOC’s sensitivity to the depth of Strait of Gibraltar. It is found that the shallower one could account for about 2~3 Sv increase of AMOC in our COSMOS. |
format |
Conference Object |
author |
Zhang, Xu Lohmann, Gerrit |
spellingShingle |
Zhang, Xu Lohmann, Gerrit Initial forcing drives the different equilibrium states of Last Glacial Maximum |
author_facet |
Zhang, Xu Lohmann, Gerrit |
author_sort |
Zhang, Xu |
title |
Initial forcing drives the different equilibrium states of Last Glacial Maximum |
title_short |
Initial forcing drives the different equilibrium states of Last Glacial Maximum |
title_full |
Initial forcing drives the different equilibrium states of Last Glacial Maximum |
title_fullStr |
Initial forcing drives the different equilibrium states of Last Glacial Maximum |
title_full_unstemmed |
Initial forcing drives the different equilibrium states of Last Glacial Maximum |
title_sort |
initial forcing drives the different equilibrium states of last glacial maximum |
publishDate |
2011 |
url |
https://epic.awi.de/id/eprint/31362/ https://hdl.handle.net/10013/epic.40163 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic NADW North Atlantic Deep Water North Atlantic |
genre_facet |
Antarc* Antarctic NADW North Atlantic Deep Water North Atlantic |
op_source |
EPIC3XVIII. INQUA Congress, Bern, Swiss, 2011-07-21-2011-07-27 |
op_relation |
Zhang, X. orcid:0000-0003-1833-9689 and Lohmann, G. orcid:0000-0003-2089-733X (2011) Initial forcing drives the different equilibrium states of Last Glacial Maximum , XVIII. INQUA Congress, Bern, Swiss, 21 July 2011 - 27 July 2011 . hdl:10013/epic.40163 |
_version_ |
1766245480480636928 |