Intercomparison of interannual variability of the global 200-hPa circulation for AMIP simulations
- Lawrence Livermore National Lab., CA (United States)
The 200-hPa divergence and streamfunction from the 30 models of the Atmospheric Model Intercomparison Project (AMIP) are compared. The data used are in the form of monthly averages and are filtered to a spatial resolution of T10, although the actual spatial resolution of the models varies from R15 to T42. The tools of the analysis are principal components analysis (PCA) and common principal components (CPC). These analyses are carried out on the 120 months of data with the climatological annual cycle removed and in the case of the streamfunction with the zonal average also removed. The AMIP period (1979--88) encompasses two El Nino-Southern Oscillation (ENSO) events (1982--83 and 1986--87), and as could be expected the ENSO characteristic response has a prominent impact in the model simulations.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 290118
- Journal Information:
- Journal of Climate, Vol. 11, Issue 10; Other Information: PBD: Oct 1998
- Country of Publication:
- United States
- Language:
- English
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