Impact of melt ponds on Arctic sea ice in past and future climates as simulated by MPI-ESM
The impact of melt ponds on Arctic sea ice is estimated from model simulations of the historical and future climate. The simulations were performed with and without the effect of melt ponds on sea ice melt, respectively. In the last thirty years of the historical simulations, melt ponds develop pred...
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American Geophysical Union (AGU)
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ftdoajarticles:oai:doaj.org/article:a73d9f5f58944c8388a5e9f2cfb26589 2023-05-15T13:10:36+02:00 Impact of melt ponds on Arctic sea ice in past and future climates as simulated by MPI-ESM Erich Roeckner Thorsten Mauritsen Renate Brokopf 2012-09-01T00:00:00Z https://doaj.org/article/a73d9f5f58944c8388a5e9f2cfb26589 EN eng American Geophysical Union (AGU) http://www.agu.org/journals/ms/ms1209/2012MS000157/ https://doaj.org/toc/1942-2466 1942-2466 https://doaj.org/article/a73d9f5f58944c8388a5e9f2cfb26589 Journal of Advances in Modeling Earth Systems, Vol 4, Iss 9, Pp M00A02-18 (2012) Arctic sea ice climate change climate simulations sea ice albedo Physical geography GB3-5030 Oceanography GC1-1581 article 2012 ftdoajarticles 2022-12-31T06:17:33Z The impact of melt ponds on Arctic sea ice is estimated from model simulations of the historical and future climate. The simulations were performed with and without the effect of melt ponds on sea ice melt, respectively. In the last thirty years of the historical simulations, melt ponds develop predominantly in the continental shelf regions and in the Canadian archipelago. Accordingly, the ice albedo in these regions is systematically smaller than in the no-pond simulations, the sea ice melt is enhanced, and both the ice concentration and ice thickness during the September minimum are reduced. Open ponds decrease the ice albedo, resulting in enhanced ice melt, less sea ice and further pond growth. This positive feedback entails a more realistic representation of the seasonal cycle of Northern Hemisphere sea ice area. Under the premise that the observed decline of Arctic sea ice over the period of modern satellite observations is mainly externally driven and, therefore, potentially predictable, both model versions underestimate the decline in Arctic sea ice. This presupposition, however, is challenged by our model simulations which show a distinct modulation of the downward Arctic sea ice trends by multidecadal variability. At longer time scales, an impact of pond activation on Arctic sea ice trends is more evident: In the Representative Concentration Pathway scenario RCP45, the September sea ice is projected to vanish by the end of the 21st century. In the active-pond simulation, this happens up to two decades earlier than in the no-pond simulations. Article in Journal/Newspaper albedo Arctic Canadian Archipelago Climate change Sea ice Directory of Open Access Journals: DOAJ Articles Arctic |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Arctic sea ice climate change climate simulations sea ice albedo Physical geography GB3-5030 Oceanography GC1-1581 |
spellingShingle |
Arctic sea ice climate change climate simulations sea ice albedo Physical geography GB3-5030 Oceanography GC1-1581 Erich Roeckner Thorsten Mauritsen Renate Brokopf Impact of melt ponds on Arctic sea ice in past and future climates as simulated by MPI-ESM |
topic_facet |
Arctic sea ice climate change climate simulations sea ice albedo Physical geography GB3-5030 Oceanography GC1-1581 |
description |
The impact of melt ponds on Arctic sea ice is estimated from model simulations of the historical and future climate. The simulations were performed with and without the effect of melt ponds on sea ice melt, respectively. In the last thirty years of the historical simulations, melt ponds develop predominantly in the continental shelf regions and in the Canadian archipelago. Accordingly, the ice albedo in these regions is systematically smaller than in the no-pond simulations, the sea ice melt is enhanced, and both the ice concentration and ice thickness during the September minimum are reduced. Open ponds decrease the ice albedo, resulting in enhanced ice melt, less sea ice and further pond growth. This positive feedback entails a more realistic representation of the seasonal cycle of Northern Hemisphere sea ice area. Under the premise that the observed decline of Arctic sea ice over the period of modern satellite observations is mainly externally driven and, therefore, potentially predictable, both model versions underestimate the decline in Arctic sea ice. This presupposition, however, is challenged by our model simulations which show a distinct modulation of the downward Arctic sea ice trends by multidecadal variability. At longer time scales, an impact of pond activation on Arctic sea ice trends is more evident: In the Representative Concentration Pathway scenario RCP45, the September sea ice is projected to vanish by the end of the 21st century. In the active-pond simulation, this happens up to two decades earlier than in the no-pond simulations. |
format |
Article in Journal/Newspaper |
author |
Erich Roeckner Thorsten Mauritsen Renate Brokopf |
author_facet |
Erich Roeckner Thorsten Mauritsen Renate Brokopf |
author_sort |
Erich Roeckner |
title |
Impact of melt ponds on Arctic sea ice in past and future climates as simulated by MPI-ESM |
title_short |
Impact of melt ponds on Arctic sea ice in past and future climates as simulated by MPI-ESM |
title_full |
Impact of melt ponds on Arctic sea ice in past and future climates as simulated by MPI-ESM |
title_fullStr |
Impact of melt ponds on Arctic sea ice in past and future climates as simulated by MPI-ESM |
title_full_unstemmed |
Impact of melt ponds on Arctic sea ice in past and future climates as simulated by MPI-ESM |
title_sort |
impact of melt ponds on arctic sea ice in past and future climates as simulated by mpi-esm |
publisher |
American Geophysical Union (AGU) |
publishDate |
2012 |
url |
https://doaj.org/article/a73d9f5f58944c8388a5e9f2cfb26589 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
albedo Arctic Canadian Archipelago Climate change Sea ice |
genre_facet |
albedo Arctic Canadian Archipelago Climate change Sea ice |
op_source |
Journal of Advances in Modeling Earth Systems, Vol 4, Iss 9, Pp M00A02-18 (2012) |
op_relation |
http://www.agu.org/journals/ms/ms1209/2012MS000157/ https://doaj.org/toc/1942-2466 1942-2466 https://doaj.org/article/a73d9f5f58944c8388a5e9f2cfb26589 |
_version_ |
1766235973616664576 |