*************************** ** THE GEM MESSENGER ** *************************** Volume 12, Number 35 September 5, 2002 --------------------------------------- GEM 2002 Workshop Report: GGCM Campaign --------------------------------------- From: Jimmy Raeder Terry Onsager 2002 GEM Workshop, Telluride Report from the GGCM WG 1 (Models) The GEM GGCM campaign held a session focusing on the current status of the GGCM campaign and related GGCM issues at this year's Telluride summer workshop. This session provided a forum for both the providers of models and their users. Two specific topics were brought up: a) Current community-accessible models: What is available, how is it working, what is needed, and what could be improved? Several speakers addressed these questions. Dan Weimer announced that his data-derived models of the ionospheric potential and FAC models are now available at the CCMC via a web interface which allows for quick access without having to obtain and install the model. Kile Baker discussed the current structure and operations of the CCMC. Two working groups have been established to advise the CCMC: one focusing on the science and one that focuses on the operations. The CCMC Science Working Group is the primary contact point for the community regarding issues and concerns as to what the CCMC offers and how. Of the 7 members of this working group David Sibeck, Chuck Goodrich, and Tamas Gombosi represent the magnetospheric community. Marsha Kusnetzova presented new features and new models now available at the CCMC which may be accessed via the CCMC web site (http://ccmc.gsfc.nasa.gov). She also reported that there is substantial demand for magnetosphere model runs. Jimmy Raeder announced that model runs on demand with the UCLA/NOAA GGCM are now also available from a web site at UCLA (http://www-ggcm2.igpp.ucla.edu), and continue to be offered by the CCMC. John Freeman gave a user's perspective, noting the usefulness of the models available at the CCMC, while also pointing out that there are still a number of glitches in the plotting interface (Mike Heinemann chimed in). Sorin Zaharia reorted results from pressure balance calculations using the Tsyganenko model that point to spurious currents when the Vasyliunas equation is used to obtain the currents. b) What should the role of the GEM community be in the emerging world of community-accessible models? This question led to an animated discussion. It was generally agreed upon that the GEM community continues to play an important role in the GGCM development and dissemination. In particular, the GEM community provides models, conducts research with the models, organizes challenges to valididate and intercompare models, recommends inclusion of models into the CCMC, recommends metrics to test the models, and provides data for metrics and model validation. In discussing these issues the consensus was that there is no specific need to institutionalize such efforts but that close collaboration with the CCMC Science Working Group should be sought. +-------------------------------------------------------------------------+ |To add name to the mailing list or for a message to the GEM community | | please contact: editor at igpp.ucla.edu | | | |URL of GEM Home Page: http://www-ssc.igpp.ucla.edu/gem/Welcome.html | |Please update your e-mail address. | +-------------------------------------------------------------------------+