The purpose of the project DEKLIM-EEM is to reconstruct past interglacials based on proxy data and to understand the processes that are responsible for climatic changes during these interglacials by applying climate models. The data represent monthly average value of a simulation of the Last Glacial Inception (LGI) at 115000 years before present(End of the Eemian). Boundary conditions are the same as in the preindustrial control run (ECHOG_A15_PRI), apart from the concentration of greenhouse gases and orbital parameters: Greenhouse gas concentrations are derived from vostok ice core data: 265 ppmV CO2, 0.52 ppmV CH4 and 270 ppbV N2O. Orbital parameters have been calculated with the routine of Berger (1978): Eccentricity: 0.0414; Obliquity: 22.41; Perihelion: 290.9 The simulation has been started with the Levitus ocean climatology. ECHO-G is used as climate model. It is a coupled atmosphere/ocean model(ECHAM4_T30 + HOPE-E_T42er). The simulation was run on a NEC-SX6(hurrikan). Atmospheric data were originally stored by the model every 12 hours. Ocean data is stored every month. As the boundary conditions are not time dependent, the time access is arbitrary. Related experiments: ECHOG_A15_PRI preindustrial control run (ca. 1800 A.D.; run a15), started with Levitus climatology. ECHOG_A16_LIG control run, last interglacial (Eemian, 125 kyrBP; run a16), started with Levitus climatology.
Kaspar, Frank; Cubasch, Ulrich (2008). ECHOG_A40_LGI: Control Run for the Last Glacial Inception (End of the Eemian, 115 kyrBP, DEKLIM-EEM project), monthly mean values. World Data Center for Climate (WDCC) at DKRZ. https://doi.org/10.1594/WDCC/ECHOG_A40_LGI_MM
model data Fortran 90 version ECHO-G version 1.8 NEC SX-6 (hurrikan.dkrz.de) -- An long-term accumulation of snow occurs in this simulation over high-latitudinal regions of North America. This is consistent with the assumption that this simulation represents the onset of the last glaciation. However, due to the simple formulation of the dependency between snow height and surface temperature, these temperatures become unrealistic after the accumulation of several hundred meters of snow. It should also be considered, that soil temperatures in these areas reach artificial equilibrium values. Please contact Frank Kaspar (
Consistent as the model is (ECHO-G), apart from "orbit"-subroutine (replaced by Stefan Lorenz). Version 1.8 of the model has been used (run in paralle...
Consistent as the model is (ECHO-G), apart from "orbit"-subroutine (replaced by Stefan Lorenz). Version 1.8 of the model has been used (run in parallel on one compute node: 6 cpus atmosphere, 1 cpu ocean, 1 cpu coupler).
F-UJI result: total 62 %
Summary: Findable: 6 of 7 level; Accessible: 2 of 3 level; Interoperable: 3 of 4 level; Reusable: 4 of 10 level
 DOIKaspar, Frank; Cubasch, Ulrich. (2007). 33. Simulations of the Eemian interglacial and the subsequent glacial inception with a coupled ocean-atmosphere general circulation model. doi:10.1016/S1571-0866(07)80058-3
Is documented by
 DOIKaspar, F.; Spangehl, T.; Cubasch, U. (2007). Northern hemisphere winter storm tracks of the Eemian interglacial and the last glacial inception. doi:10.5194/cp-3-181-2007