Simulated mid-Holocene and last interglacial climate using two generations of AWI-ESM
Numerical simulations allow us to gain a comprehensive understanding of the underlying mechanisms of past, present and future climate changes. The mid-Holocene and the last interglacial were the two most recent warm episodes of Earth’s climate history and are the focus of paleoclimate research. Here...
Published in: | Journal of Climate |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
AMS (American Meteorological Society)
2022
|
Subjects: | |
Online Access: | https://oceanrep.geomar.de/id/eprint/57237/ https://oceanrep.geomar.de/id/eprint/57237/1/1520-0442-JCLI-D-22-0354.1.pdf https://doi.org/10.1175/JCLI-D-22-0354.1 |
id |
ftoceanrep:oai:oceanrep.geomar.de:57237 |
---|---|
record_format |
openpolar |
spelling |
ftoceanrep:oai:oceanrep.geomar.de:57237 2023-05-15T15:13:58+02:00 Simulated mid-Holocene and last interglacial climate using two generations of AWI-ESM Shi, Xiaoxu Werner, Martin Wang, Qiang Yang, Hu Lohmann, Gerrit 2022-09-02 text https://oceanrep.geomar.de/id/eprint/57237/ https://oceanrep.geomar.de/id/eprint/57237/1/1520-0442-JCLI-D-22-0354.1.pdf https://doi.org/10.1175/JCLI-D-22-0354.1 en eng AMS (American Meteorological Society) https://oceanrep.geomar.de/id/eprint/57237/1/1520-0442-JCLI-D-22-0354.1.pdf Shi, X., Werner, M., Wang, Q., Yang, H. and Lohmann, G. (2022) Simulated mid-Holocene and last interglacial climate using two generations of AWI-ESM. Open Access Journal of Climate . DOI 10.1175/JCLI-D-22-0354.1 <https://doi.org/10.1175/JCLI-D-22-0354.1>. doi:10.1175/JCLI-D-22-0354.1 info:eu-repo/semantics/openAccess Article PeerReviewed 2022 ftoceanrep https://doi.org/10.1175/JCLI-D-22-0354.1 2023-04-07T16:04:57Z Numerical simulations allow us to gain a comprehensive understanding of the underlying mechanisms of past, present and future climate changes. The mid-Holocene and the last interglacial were the two most recent warm episodes of Earth’s climate history and are the focus of paleoclimate research. Here, we present results of MH and LIG simulations with two versions of the state-of-the-art earth system model AWI-ESM. Most of the climate changes in MH and LIG compared to the pre-industrial era are agreed upon by the two model versions, including: (1) enhanced seasonality in surface temperature which is driven by the redistribution of seasonal insolation; (2) northward shift of the Intertropical Convergence Zone (ITCZ) and tropical rain belt; (3) a reduction in annual mean Arctic sea ice concentration; (4) weakening and northward displacement of the Northern Hemisphere Hadley Circulation, which is related to the decrease and poleward shift of the temperature gradient from the subtropical to the equator in the Northern Hemisphere; (5) westward shift of the Indo-PacificWalker Circulation due to anomalous warming over the Eurasia and North Africa during boreal summer; and (6) expansion and intensification of Northern Hemisphere summer monsoon rainfall, with the latter being dominated by the dynamic component of moisture budget, i.e., the strengthening of wind circulation. However, the simulated responses of the Atlantic Meridional Overturning Circulation (AMOC) in the two models yield different results for both the LIG and the MH. AMOC anomalies between the warm interglacial and pre-industrial periods are associated with changes in North Atlantic westerly winds and stratification of the water column at the North Atlantic due to changes in ocean temperature, salinity and density. Article in Journal/Newspaper Arctic North Atlantic Sea ice OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Arctic Journal of Climate 35 23 4211 4231 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
Numerical simulations allow us to gain a comprehensive understanding of the underlying mechanisms of past, present and future climate changes. The mid-Holocene and the last interglacial were the two most recent warm episodes of Earth’s climate history and are the focus of paleoclimate research. Here, we present results of MH and LIG simulations with two versions of the state-of-the-art earth system model AWI-ESM. Most of the climate changes in MH and LIG compared to the pre-industrial era are agreed upon by the two model versions, including: (1) enhanced seasonality in surface temperature which is driven by the redistribution of seasonal insolation; (2) northward shift of the Intertropical Convergence Zone (ITCZ) and tropical rain belt; (3) a reduction in annual mean Arctic sea ice concentration; (4) weakening and northward displacement of the Northern Hemisphere Hadley Circulation, which is related to the decrease and poleward shift of the temperature gradient from the subtropical to the equator in the Northern Hemisphere; (5) westward shift of the Indo-PacificWalker Circulation due to anomalous warming over the Eurasia and North Africa during boreal summer; and (6) expansion and intensification of Northern Hemisphere summer monsoon rainfall, with the latter being dominated by the dynamic component of moisture budget, i.e., the strengthening of wind circulation. However, the simulated responses of the Atlantic Meridional Overturning Circulation (AMOC) in the two models yield different results for both the LIG and the MH. AMOC anomalies between the warm interglacial and pre-industrial periods are associated with changes in North Atlantic westerly winds and stratification of the water column at the North Atlantic due to changes in ocean temperature, salinity and density. |
format |
Article in Journal/Newspaper |
author |
Shi, Xiaoxu Werner, Martin Wang, Qiang Yang, Hu Lohmann, Gerrit |
spellingShingle |
Shi, Xiaoxu Werner, Martin Wang, Qiang Yang, Hu Lohmann, Gerrit Simulated mid-Holocene and last interglacial climate using two generations of AWI-ESM |
author_facet |
Shi, Xiaoxu Werner, Martin Wang, Qiang Yang, Hu Lohmann, Gerrit |
author_sort |
Shi, Xiaoxu |
title |
Simulated mid-Holocene and last interglacial climate using two generations of AWI-ESM |
title_short |
Simulated mid-Holocene and last interglacial climate using two generations of AWI-ESM |
title_full |
Simulated mid-Holocene and last interglacial climate using two generations of AWI-ESM |
title_fullStr |
Simulated mid-Holocene and last interglacial climate using two generations of AWI-ESM |
title_full_unstemmed |
Simulated mid-Holocene and last interglacial climate using two generations of AWI-ESM |
title_sort |
simulated mid-holocene and last interglacial climate using two generations of awi-esm |
publisher |
AMS (American Meteorological Society) |
publishDate |
2022 |
url |
https://oceanrep.geomar.de/id/eprint/57237/ https://oceanrep.geomar.de/id/eprint/57237/1/1520-0442-JCLI-D-22-0354.1.pdf https://doi.org/10.1175/JCLI-D-22-0354.1 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic North Atlantic Sea ice |
genre_facet |
Arctic North Atlantic Sea ice |
op_relation |
https://oceanrep.geomar.de/id/eprint/57237/1/1520-0442-JCLI-D-22-0354.1.pdf Shi, X., Werner, M., Wang, Q., Yang, H. and Lohmann, G. (2022) Simulated mid-Holocene and last interglacial climate using two generations of AWI-ESM. Open Access Journal of Climate . DOI 10.1175/JCLI-D-22-0354.1 <https://doi.org/10.1175/JCLI-D-22-0354.1>. doi:10.1175/JCLI-D-22-0354.1 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1175/JCLI-D-22-0354.1 |
container_title |
Journal of Climate |
container_volume |
35 |
container_issue |
23 |
container_start_page |
4211 |
op_container_end_page |
4231 |
_version_ |
1766344475857125376 |