Configuration and assessment of the GISS ModelE2 contributions to the CMIP5 archive

By Gavin A. Schmidt, M. Kelley, L. Nazarenko, R. Ruedy, G. Russell, I. Aleinov, M. Bauer, S. Bauer, M. Bhat, Rainer Bleck and 35 more. 2014

660 citations recorded by the source corpus.

We present a description of the ModelE2 version of the Goddard Institute for Space Studies (GISS) General Circulation Model (GCM) and the configurations used in the simulations performed for the Coupled Model Intercomparison Project Phase 5 (CMIP5). We use six variations related to the treatment of the atmospheric composition, the calculation of aerosol indirect effects, and ocean model component. Specifically, we test the difference between atmospheric models that have noninteractive composition, where radiatively important aerosols and ozone are prescribed from precomputed decadal averages, and interactive versions where atmospheric chemistry and aerosols are calculated given decadally varying emissions. The impact of the first aerosol indirect effect on clouds is either specified using a simple tuning, or parameterized using a cloud microphysics scheme. We also use two dynamic ocean components: the Russell and HYbrid Coordinate Ocean Model (HYCOM) which differ significantly in their basic formulations and grid. Results are presented for the climatological means over the satellite era (1980–2004) taken from transient simulations starting from the preindustrial (1850) driven by estimates of appropriate forcings over the 20th Century. Differences in base climate and variability related to the choice of ocean model are large, indicating an important structural uncertainty. The impact of interactive atmospheric composition on the climatology is relatively small except in regions such as the lower stratosphere, where ozone plays an important role, and the tropics, where aerosol changes affect the hydrological cycle and cloud cover. While key improvements over previous versions of the model are evident, these are not uniform across all metrics.

Subfields: Atmospheric Science, Global and Planetary Change

View Paper: https://www.semanticscholar.org/paper/7dd47bf8891e733b98d897adb44b288d0f5ba39a

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Atmospheric Science

  1. D. Shindell
  2. J. Hansen
  3. Gavin A. Schmidt
  4. D. Koch
  5. Makiko Sato
  6. Ronald L. Miller
  7. Andrew A. Lacis
  8. J. Perlwitz

In Global and Planetary Change

  1. D. Shindell
  2. J. Hansen
  3. Gavin A. Schmidt
  4. D. Koch
  5. Makiko Sato
  6. Andrew A. Lacis
  7. Ronald L. Miller
  8. J. Perlwitz

Citations in the corpus