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High-resolution regional simulation of last glacial maximum climate in Europe

Strandberg, Gustav; Brandefelt, Jenny; Kjellstrom, Erik and Smith, Benjamin LU (2011) In Tellus. Series A: Dynamic Meteorology and Oceanography 63(1). p.107-125
Abstract
A fully coupled atmosphere-ocean general circulation model is used to simulate climate conditions during the last glacial maximum (LGM). Forcing conditions include astronomical parameters, greenhouse gases, ice sheets and vegetation. A 50-yr period of the global simulation is dynamically downscaled to 50 km horizontal resolution over Europe with a regional climate model (RCM). A dynamic vegetation model is used to produce vegetation that is consistent with the climate simulated by the RCM. This vegetation is used in a final simulation with the RCM. The resulting climate is 5-10 degrees C colder than the recent past climate (representative of year 1990) over ice-free parts of Europe as an annual average; over the ice-sheet up to 40 degrees... (More)
A fully coupled atmosphere-ocean general circulation model is used to simulate climate conditions during the last glacial maximum (LGM). Forcing conditions include astronomical parameters, greenhouse gases, ice sheets and vegetation. A 50-yr period of the global simulation is dynamically downscaled to 50 km horizontal resolution over Europe with a regional climate model (RCM). A dynamic vegetation model is used to produce vegetation that is consistent with the climate simulated by the RCM. This vegetation is used in a final simulation with the RCM. The resulting climate is 5-10 degrees C colder than the recent past climate (representative of year 1990) over ice-free parts of Europe as an annual average; over the ice-sheet up to 40 degrees C colder in winter. The average model-proxy error is about the same for summer and winter, for pollen-based proxies. The RCM results are within (outside) the uncertainty limits for winter (summer). Sensitivity studies performed with the RCM indicate that the simulated climate is sensitive to changes in vegetation, whereas the location of the ice sheet only affects the climate around the ice sheet. The RCM-simulated interannual variability in near surface temperature is significantly larger at LGM than in the recent past climate. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Tellus. Series A: Dynamic Meteorology and Oceanography
volume
63
issue
1
pages
107 - 125
publisher
Wiley-Blackwell
external identifiers
  • wos:000285309200008
  • scopus:78650110468
ISSN
1600-0870
DOI
10.1111/j.1600-0870.2010.00485.x
project
MERGE
BECC
language
English
LU publication?
yes
id
f62a5a26-26c4-41b7-bf63-109c3f41f832 (old id 1773827)
date added to LUP
2011-02-02 10:34:50
date last changed
2017-07-23 04:26:31
@article{f62a5a26-26c4-41b7-bf63-109c3f41f832,
  abstract     = {A fully coupled atmosphere-ocean general circulation model is used to simulate climate conditions during the last glacial maximum (LGM). Forcing conditions include astronomical parameters, greenhouse gases, ice sheets and vegetation. A 50-yr period of the global simulation is dynamically downscaled to 50 km horizontal resolution over Europe with a regional climate model (RCM). A dynamic vegetation model is used to produce vegetation that is consistent with the climate simulated by the RCM. This vegetation is used in a final simulation with the RCM. The resulting climate is 5-10 degrees C colder than the recent past climate (representative of year 1990) over ice-free parts of Europe as an annual average; over the ice-sheet up to 40 degrees C colder in winter. The average model-proxy error is about the same for summer and winter, for pollen-based proxies. The RCM results are within (outside) the uncertainty limits for winter (summer). Sensitivity studies performed with the RCM indicate that the simulated climate is sensitive to changes in vegetation, whereas the location of the ice sheet only affects the climate around the ice sheet. The RCM-simulated interannual variability in near surface temperature is significantly larger at LGM than in the recent past climate.},
  author       = {Strandberg, Gustav and Brandefelt, Jenny and Kjellstrom, Erik and Smith, Benjamin},
  issn         = {1600-0870},
  language     = {eng},
  number       = {1},
  pages        = {107--125},
  publisher    = {Wiley-Blackwell},
  series       = {Tellus. Series A: Dynamic Meteorology and Oceanography},
  title        = {High-resolution regional simulation of last glacial maximum climate in Europe},
  url          = {http://dx.doi.org/10.1111/j.1600-0870.2010.00485.x},
  volume       = {63},
  year         = {2011},
}