CCPP-ARM GCM Analysis of Tendency Errors (CAGATE): Part II Results

Hnilo, J.J.(a), Boyle, J.S.(a), Cederwall, R.T.(a), Fiorino, M.(a), Phillips, T.J.(a), Potter, G.L.(a), and Williamson, D.(b), Lawrence Livermore National Laboratory (a), National Center for Atmospheric Research (b)
Twelfth Atmospheric Radiation Measurement (ARM) Science Team Meeting

We have begun with two tasks to evaluate the initialization process. The first is what we term a "perfect model" method which addresses procedural questions such as: nudging, interpolation of data, forecast times and useful diagnostics. The reason for examining this is so we can determine if the differences we are seeing in a field are caused by model initialization problems or model physics errors. The second task uses CAM in a complimentary real world context. We nudge the CAM with the NCEP/DOE reanalysis data for the IOP June to July 1997. This period allows us to address questions of data assimilation and the use of the ARM IOP data as an objective data point. This work was performed under the auspices of the U.S. Department of Energy by University of California Lawrence Livermore National Laboratory under Contract No. W-7405-Eng-48.

Note: This is the poster abstract presented at the meeting; an extended version was not provided by the author(s).