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PCMDI > WGNE Workshop on Systematic Errors in Climate and NWP Models Printer Friendly Version

3rd WGNE Workshop on Systematic Errors in Climate and NWP Models

San Francisco, February 12-16, 2007

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Abstracts Abstract Book (pdf) WORKSHOP PROGRAM (pdf) Attendees (pdf) Summary

This workshop will address a broad spectrum of systematic errors in climate and numerical weather prediction models. It will be held at the newly renovated financial district Hilton, adjacent to North Beach and Chinatown in San Francisco. Registration deadlines and more information on the workshop program are summarized below.

Deadlines for attendees:
It is anticipated that this workshop will be large given the wide range of topics covered. An approximate attendance estimate is needed to secure government rate accommodations. If you think you may attend, please notify the organizing committee (email pgleckler@llnl.gov) as soon as possible. Doing so will put you on the workshop mailing list and enable us to keep you informed of how many Gov't rate rooms remain available. The latest possible date to book a Gov't rate room is January 12th 2007, but they may sell out well in advance of this date as availibility is limited.

Abstracts and registration: Presenters will need to email abstracts (as unformatted text to pgleckler@llnl.gov) and register by December 12. Non-U.S. citizens will need to provide some additional information.

The topics to be considered at this workshop are categorized below according to time scale, but in all cases it is expected that of special interest will be research involving:

  • multiple models,
  • innovative validation techniques,
  • the development of performance metrics, and/or
  • use of new observational data sets

  1. Longer time scales
  2. Research that uncovers systematic errors in the climatology of coupled and uncoupled GCMs will be of considerable interest, as will analysis of errors related to the simulation of particular phenomena or modes of low-frequency climate variability. It is expected that many of the new results will be based on model output recently contributed to the IPCC AR4 data archive.

  3. Intermediate time scales
  4. Dynamical seasonal predictions can reveal model errors not always apparent in climatology. Of particular interest will be studies that clarify the impact of model errors on coupled or uncoupled simulations and predictions, diagnose the origin of errors, and work towards their solution by improving the models. Exploration of the limitations of prescribed SST experiments in understanding the coupled system are also welcome.

    Research contributions are encouraged in the following areas: 1) studies aimed at rectifying shortcomings in the simulation of MJO and its associated teleconnections, particularly those addressing multi-scale interactions, 2) systematic errors of monsoon systems (including at time scales other than intra-seasonal), and 3) tropical biases affecting modes of variability that are present both in uncoupled and coupled simulations.

  5. Shorter time scales
  6. Part of the workshop will be devoted to the use of short-range model simulations to elucidate systematic model errors. In addition to results based on global and limited area NWP models, contributions based on data assimilation systems and other types of models, such as single column models or cloud-resolving models are encouraged. Of special interest also are results that demonstrate innovative application of short to medium-range simulations in model evaluation, which progress beyond just the identification of systematic model errors.

    One focus of the workshop will be the diagnosis of model error in relation to the hydrological cycle. The identification of errors in the quantitative prediction of precipitation and the analysis of their causes are particularly relevant and presentations addressing this area are welcomed. Systematic problems in the energy exchange between the surface and the atmosphere - both over land and the ocean, and contributions addressing errors in the model diurnal cycle and ways for their improvement are encouraged.

Systematic errors workshop scientific steering committee:

Greg Flato (CCCma, representing WGCM)
Peter Gleckler, Chair (PCMDI)
Jim Hack (NCAR, representing WGNE and CLIVAR)
Christian Jakob (BMRC, representing GMPP)
Martin Miller (ECMWF, Chair of WGNE)
Ken Sperber (PCMDI)
Tim Stockdale (ECMWF, representing WGSIP)
Karl Taylor (PCMDI)

If you are interested in attending, make sure to periodically check the workshop website: http://www-pcmdi.llnl.gov/wgne2007

Questions can be addressed to pgleckler@llnl.gov

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