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

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 deg 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 deg 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
Authors:
Strandberg, Gustav; Kjellstroem, Erik; [1]  Brandefelt, Jenny; [2]  Smith, Benjamin [3] 
  1. Swedish Meteorological and Hydrological Inst., Norrkoeping (Sweden)
  2. Dept. of Mechanics, Linne Flow Centre, KTH, Stockholm (Sweden)
  3. Dept. of Earth and Ecosystem Sciences, Lund Univ., Geocentrum II, Lund (Sweden)
Publication Date:
Jan 15, 2011
Product Type:
Journal Article
Resource Relation:
Journal Name: Tellus, Series A - Dynamic Meteorology and Oceanography; Journal Volume: 63A; Journal Issue: 1; Other Information: 66 refs., 12 figs., 4 tabs.; 10.1111/J.1600-0870.2010.00485.X
Subject:
54 ENVIRONMENTAL SCIENCES; CLIMATE MODELS; AMBIENT TEMPERATURE; ICE; PLANTS; GREENHOUSE GASES; EUROPE; GLACIERS
OSTI ID:
1008094
Country of Origin:
Sweden
Language:
English
Other Identifying Numbers:
Journal ID: ISSN 0280-6495; TRN: SE1107046
Availability:
Available from DOI: http://dx.doi.org/10.1111/j.1600-0870.2010.00485.x
Submitting Site:
SWD
Size:
page(s) 107-125
Announcement Date:
Mar 14, 2011

Citation Formats

Strandberg, Gustav, Kjellstroem, Erik, Brandefelt, Jenny, and Smith, Benjamin. High-resolution regional simulation of last glacial maximum climate in Europe. Sweden: N. p., 2011. Web. doi:10.1111/J.1600-0870.2010.00485.X.
Strandberg, Gustav, Kjellstroem, Erik, Brandefelt, Jenny, & Smith, Benjamin. High-resolution regional simulation of last glacial maximum climate in Europe. Sweden. doi:10.1111/J.1600-0870.2010.00485.X.
Strandberg, Gustav, Kjellstroem, Erik, Brandefelt, Jenny, and Smith, Benjamin. 2011. "High-resolution regional simulation of last glacial maximum climate in Europe." Sweden. doi:10.1111/J.1600-0870.2010.00485.X. https://www.osti.gov/servlets/purl/10.1111/J.1600-0870.2010.00485.X.
@misc{etde_1008094,
title = {High-resolution regional simulation of last glacial maximum climate in Europe}
author = {Strandberg, Gustav, Kjellstroem, Erik, Brandefelt, Jenny, and Smith, Benjamin}
abstractNote = {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 deg 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 deg 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}
doi = {10.1111/J.1600-0870.2010.00485.X}
journal = {Tellus, Series A - Dynamic Meteorology and Oceanography}
issue = {1}
volume = {63A}
place = {Sweden}
year = {2011}
month = {Jan}
}