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CCM1 Model Experiments

You may download monthly and seasonal data from these experiments by choosing from the experiment name columns. Not all data is available. The numbers on the end of the file names denote the years. Also, NCAR/CCR diagnostic packages are available for some experiments. You may obtain more information on these boundary conditions: carbon dioxide volume, orbital parameters, and paleocalendar dates.

Experiment Tables

 CCM1 Holocene Experiments

Experiment Name(1) Description  Res(2)  SSTs
(3) 
Sea ice
(4) 
Insol. 
(5a)
Mask (5b)  CO2  Calendar (6)  Hist Files
(7) 
Run Length  Years Averaged 

CNTROLPI 

monthly
seasonal

Version P with 
Pre-Industrial CO2 
R15  ML  267  25  2025 

6KEXP 

Gstats

monthly - diag pack
seasonal - diag pack

6K  R15  ML  6k  Pelt  267  6k  25  2025 

11KEXP 

Gstats

monthly - diag pack
seasonal - diag pack

11K  R15  ML  11k  Pelt  267  11k  25  2025 

14KEXP 

Gstats

monthly - diag pack
seasonal - diag pack

14K  R15  ML  14k  Pelt  230  14k  25  2025 

16KEXP 

Gstats

monthly - diag pack
seasonal - diag pack

16K  R15  ML  16k  Pelt  210  16k  25  2025 

21KEXP 

GStats

monthly - diag pack
seasonal - diag pack

21K  R15  ML  21k  Pelt  191  21k  25  2025 
Related Publications

Kutzbach, J.E., R. Gallimore, S.P. Harrison, P. Behling, R. Selin, and F. Laarif (1998). Climate and biome simulations for the past 21,000 years. Quaternary Science Reviews 17(6-7), 473-506. CCR #710

Kutzbach, J.E., P.J. Guetter, P.J. Behling, R. Selin (1993). Simulated climatic changes: results of the COHMAP climate-model experiments. Chapter 4 In Global Climates since the Last Glacial Maximum (H.E. Wright, Jr, J.E.Kutzbach, T. Webb III, W.F. Ruddiman, F.A. Street-Perrott, and P.J. Bartlein, eds.), University of Minnesota Press, Minneapolis, MN, pp. 24-93. CCR #644

COHMAP Members (1988). Climatic changes of the last 18,000 years: Observations and Model Simulations. Science 241, 1043-1052. CCR #578

 

CCM1 Variable Mountain Height Experiments

Experiment Name(1) Description  Res(2)  SSTs
(3) 
Sea ice
(4) 
Insol. 
(5a)
Mask (5b)  CO2  Calendar (6)  Hist Files
(7) 
Run Length  Years Averaged 

CONTROLJ

monthly
seasonal

Version J Cray XMP (COS)  R15  ML  330  20  1520

CONTROLP

monthly
seasonal

Version P Cray YMP (UNICOS)  R15  ML  330  25  2025 

PPLTPL

Gstats

monthly
seasonal

Summer Solstice Peri (+), Tilt 24.45 (+)  R15  ML  extreme +  330  20  1520 

PMNTMN

Gstats

monthly
seasonal

Winter Solstice Peri (-), Tilt 22.45 (-)  R15  ML  extreme -  330  20  1520 

QUPPLTPL

Gstats

monthly
seasonal

1/4 height mountains Summer Solstice Peri (+), Tilt 24.45 (+)  R15  ML  extreme +  330  20  1520 

QUPMNTMN

Gstats

monthly
seasonal

1/4 height mountains Winter Solstice Peri (-), Tilt 22.45 (-)  R15  ML  extreme -  330  20  1520 

VHMOUNTS

Gstats

monthly
seasonal

Variably reduced height mountains  R15  ML  660  20  1520 

HFMOUNTS 

Gstats

monthly
seasonal

Half height mtns  R15  ML  330  20  1520 

NOMOUNTS

Gstats

monthly
seasonal

No mountains  R15  ML  330  20  1520 
Related Publications

Gallimore, R.G., and J.E. Kutzbach (1996). Role of orbitally-induced changes in tundra area in the onset of glaciation. Nature 381, 503-505. CCR #679

Gallimore, R.G. and J.E. Kutzbach (1995). Snow cover and sea ice sensitivity to generic changes in Earth orbital parameters. J. Geophysical Research 100(D1), 1103-1120. CCR #673

 

CCM1 Pangaea Experiments

Experiment Name(1) Description  Res
(2) 
SSTs
(3) 
Sea ice
(4) 
Insol.
 (5a)
Mask (5b)  CO2  Calendar (6)  Hist File
s(7) 
Run Length  Years Averaged 
CNTROLPX Version P with fixed SSTs  R15  330  17  0307, 0812, 1317 

CPANGAEA

monthly
seasonal

Symmetric Idealizd computed control  R15  ML  SP  330  20  1520 

PANGAEA

monthly
seasonal

Symmetric Idealizd  R15  ML  SP  330  20  1520 

PANGAEB 

monthly
seasonal

Realistic Late Permian  R15  ML  RP  330  20  1520 

PANGAEC

monthly
seasonal

Realistic Late Permian with extensive lakes  R15  ML  RPL  1650  20  1520 
Related Publications  

 

CCM1 Interglacial Experiments 

Experiment Name(1) Description  Res(2)  SSTs(3)  Sea ice(4)  Insol. (5a) Mask (5b)  CO2  Calendar (6)  Hist Files(7)  Run Length  Years Averaged 

K6E 

monthly
seasonal

6K  R15  ML  6k  330  6k  20  1520

126KAEXP

monthly
seasonal

126K  R15  126k  330  126k  17  0307, 0812, 1317 
Related Publications  

Tables Key

1 Experiment Name, Global Stats (Standard Areas), Downloadable Data
2 Resolution: R15 (4.5 x 7.5)
3 SSTs: ML=mixed-layer, F=fixed
4 Sea-ice: I=interactive, P=prescribed, F=fixed
5a Insolation: M=modern, number=paleodate before present (i.e., 6k)
5b Mask: M=modern, C=calculated, P=Peltier reconstruction, RP=realistic Pangaea, RPL=realistic Pangaea with lakes, SP=symmetric Pangaea
CO2: A=Atmosphere, V=Vegetation
6 Calendar M=modern dates, number=paleodate before present (i.e., 6k)
7 History file written: D=daily, M=monthly