CESM Large Ensemble Project

Description: Coupled model run specified time varying greenhouse gases (GHG) and ozone. The GHG evolution is based on observed estimates from 1850-2005, and then a RCP8.5 scenario thereafter. The time varying ozone is based on data from WACCM values.

For full details, see:

Kay, J. E., Deser, C., Phillips, A., Mai, A., Hannay, C., Strand, G., Arblaster, J., Bates, S., Danabasoglu, G., Edwards, J., Holland, M. Kushner, P., Lamarque, J.-F., Lawrence, D., Lindsay, K., Middleton, A., Munoz, E., Neale, R., Oleson, K., Polvani, L., and M. Vertenstein (2015), The Community Earth System Model (CESM) Large Ensemble Project: A Community Resource for Studying Climate Change in the Presence of Internal Climate Variability, Bulletin of the American Meteorological Society, , 96, 1333-1349, doi: 10.1175/BAMS-D-13-00255.1.

Experiment ID:LENS

Years: 1920-2080

Forcings

Sea Surface Temperature (SST) Internally generated by coupled model.
Sea Ice (SIC) Internally generated by coupled model.
Greenhouse Gases (GHG) From 1850-2005, historical values, 2006-2100 RCP 8.5

Values are from:

Meinshausen, M., S. J. Smith, K. V. Calvin, J. S. Daniel, M. Kainuma, J.-F. Lamarque, K. Matsumoto, S. A. Montzka, S. C. B. Raper, K. Riahi, A. M. Thomson, G. J. M. Velders and D. van Vuuren (2011). The RCP Greenhouse Gas Concentrations and their Extension from 1765 to 2300. Climatic Change (Special Issue). doi: 10.1007/s10584-011-0156-z

which are the CMIP5 Recommendations for annual average, global mean concentrations.
Ozone (03) WACCM ozone forcing, see:

Eyring, V., and Coauthors, 2013: Long-term ozone changes and associated climate impacts in CMIP5 simulations. J. Geophys. Res. Atmos., 18, 5029–5060, doi: 10.1002/jgrd.50316.
Aerosols Short-lived gases and aerosols, values from:

Lamarque, J. F., and Coauthors, 2011: Global and regional evolution of short-lived radiatively-active gases and aerosols in the representative concentration pathways. Climatic Change, 109, 191–212, doi: 10.1007/s10584-011-0155-0