The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP): Overview and description of models, simulations and climate diagnostics

Lamarque, J. F. and Shindell, Drew T. and Josse, B and Young, Paul and Cionni, I and Eyring, V. and Bergmann, D. and Cameron-Smith, Philip and Collins, William J. and Doherty, R. M. and Dalsoren, Stig B and Faluvegi, G. and Folberth, G. and Ghan, S and Horowitz, L. W. and Lee, Y and MacKenzie, Ian A. and Nagashima, T and Naik, Vaishali and Plummer, David A and Righi, M and Rumbold, S and Schulz, Michael and Skeie, R and Stevenson, D. S. and Strode, Sarah and Sudo, K. and Szopa, Sophie and Voulgarakis, A. and Zeng, Guang (2013) The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP): Overview and description of models, simulations and climate diagnostics. Geoscientific Model Development, 6 (1). pp. 179-206. ISSN 1991-9603

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Abstract

The Atmospheric Chemistry and Climate Model Intercomparison Project (ACCMIP) consists of a series of time slice experiments targeting the long-term changes in atmospheric composition between 1850 and 2100, with the goal of documenting composition changes and the associated radiative forcing. In this overview paper, we introduce the ACCMIP activity, the various simulations performed (with a requested set of 14) and the associated model output. The 16 ACCMIP models have a wide range of horizontal and vertical resolutions, vertical extent, chemistry schemes and interaction with radiation and clouds. While anthropogenic and biomass burning emissions were specified for all time slices in the ACCMIP protocol, it is found that the natural emissions are responsible for a significant range across models, mostly in the case of ozone precursors. The analysis of selected present-day climate diagnostics (precipitation, temperature, specific humidity and zonal wind) reveals biases consistent with state-of-the-art climate models. The model-to-model comparison of changes in temperature, specific humidity and zonal wind between 1850 and 2000 and between 2000 and 2100 indicates mostly consistent results. However, models that are clear outliers are different enough from the other models to significantly affect their simulation of atmospheric chemistry.

Item Type:
Journal Article
Journal or Publication Title:
Geoscientific Model Development
Additional Information:
© Author(s) 2013. This work is distributed under the Creative Commons Attribution 3.0 License.
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/1900
Subjects:
ID Code:
62283
Deposited By:
Deposited On:
15 Feb 2013 13:58
Refereed?:
Yes
Published?:
Published
Last Modified:
10 Jul 2020 02:50