caa a22 4500 477064183 CHVBK 20180405111408.0 cr unu---uuuuu 170330e19960901xx s 000 0 eng 10.1007/BF02369006 doi (NATIONALLICENCE)springer-10.1007/BF02369006 Investigating the sensitivity of the Atmospheric General Circulation Model ECHAM 3 to paleoclimatic boundary conditions [Elektronische Daten] [S. Lorenz, B. Grieger, Ph. Helbig, K. Herterich] We present atmospheric simulations of three different time slices of the late Quaternary using the ECHAM 3 general circulation model in T42 resolution. In this work we describe the results of model runs for the time slices 6000 years BP (last climate optimum), 21 000 BP (last glacial maximum) and 115 000 years BP (glacial inception). Although the solar insolation is known for all time slices, a complete data set of the other boundary conditions which are necessary for running the atmospheric model exists only for the last glacial maximum in the form of the CLIMAP reconstruction. For the other two time slices, which are interglacial states like the modern climate, sea surface temperatures, land albedo and ice sheet topography are kept at modern values and only the solar insolation is changed appropriately. The response of the model to solar insolation changes is quite reasonable. The modelled anomalies are small and roughly opposite in sign for 6000 BP and 115 000 BP, respectively. In the case of last glacial maximum, the glacial ice sheet topography and ice albedo produce a much larger climate anomaly in the model. However, to enable a real test of model performance under glacial boundary conditions, the CLIMAP sea surface temperatures, which are now known to be partly inaccurate, should be replaced by an updated "state-of-the-art” reconstruction. Springer-Verlag, 1996 Atmospheric response nationallicence General circulation models nationallicence Glacial maximum nationallicence Milankovitch Theory nationallicence Paleoclimate nationallicence Climate optimum nationallicence Glacial inception nationallicence Lorenz S. Universität Bremen, Fachbereich 5, Geowissenschaften, Postfach 33 04 40, D-28334, Bremen, Germany aut Grieger B. Universität Bremen, Fachbereich 5, Geowissenschaften, Postfach 33 04 40, D-28334, Bremen, Germany aut Helbig Ph Universität Bremen, Fachbereich 5, Geowissenschaften, Postfach 33 04 40, D-28334, Bremen, Germany aut Herterich K. Universität Bremen, Fachbereich 5, Geowissenschaften, Postfach 33 04 40, D-28334, Bremen, Germany aut Geologische Rundschau Springer-Verlag 85/3(1996-09-01), 513-524 0016-7835 85:3<513 1996 85 531 https://doi.org/10.1007/BF02369006 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02369006 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lorenz S. Universität Bremen, Fachbereich 5, Geowissenschaften, Postfach 33 04 40, D-28334, Bremen, Germany aut NATIONALLICENCE 700 1- Grieger B. Universität Bremen, Fachbereich 5, Geowissenschaften, Postfach 33 04 40, D-28334, Bremen, Germany aut NATIONALLICENCE 700 1- Helbig Ph Universität Bremen, Fachbereich 5, Geowissenschaften, Postfach 33 04 40, D-28334, Bremen, Germany aut NATIONALLICENCE 700 1- Herterich K. Universität Bremen, Fachbereich 5, Geowissenschaften, Postfach 33 04 40, D-28334, Bremen, Germany aut NATIONALLICENCE 773 0- Geologische Rundschau Springer-Verlag 85/3(1996-09-01), 513-524 0016-7835 85:3<513 1996 85 531 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer