*************************** ** THE GEM MESSENGER ** *************************** Volume 19, Number 22 July 16, 2009 ---------------------------------------------------------------------------- GEM Modeling Challenge Status; Call for Participation ---------------------------------------------------------------------------- From: Masha Kuznetsova and Aaron Ridley GGCM Metrics and Validation Focus Group is organizing Modeling Challenge focusing on the inner magnetospheric dynamics and ground magnetic field perturbations. The goals of the Challenge are to address differences between various modeling approaches, evaluate the current state of GGCM models, demonstrate effects of model coupling and grid resolution, encourage collaborations, and facilitate further model improvements. Events and physical parameters for the Modeling Challenge were selected at the GEM 2008 Workshop. Event 1: Oct 29, 2003 06:00 UT - Oct 30, 06:00 UT Event 2: Dec 14, 2006 12:00 UT - Dec 16, 00:00 UT Event 3: Aug 31, 2001 00:00 UT - Sep 01, 00:00 UT Event 4: Aug 31, 2005 10:00 UT - Sep 01, 12:00 UT Metric Study 1: Magnetic field at geosynchronous orbit (GOES) Metric Study 2: Magnetopause crossings by geosynchronous satellite (GOES and LANL) Metric Study 3: Plasma density/temperature at geosynchronous orbit (LANL) Metric Study 4: Ground magnetic field perturbations (ground based magnetometers) Metric Study 5: Dst index (added at GEM 2009 summer workshop) To support the Challenge the Community Coordinated Modeling Center (CCMC) developed a Metrics Tools Suite. The web-accessible CCMC Metrics Tools include interactive simulation results submission interface, on-line time series plotting tool, database of model settings, and configurable table of metrics results. Links to Metrics Tools can be found at the Challenge web site located at http://ccmc.gsfc.nasa.gov/support/GEM_metrics_08/index.php. Challenge results were presented and discussed at GEM Summer Workshop in Snowmass, CO. Session Summary is available at the GEM wiki. Reports on Metrics Study 4 (Ground magnetic field perturbations) and on Metrics Study 1 (Magnetic field at geosynchronous orbit) based on simulation results submitted prior to the Workshop are available at the Challenge Website. Lutz Rastaetter and Antti Pulkkinen are working on two papers (Metrics Studies 1 & 4) to be submitted to Space Weather Journal by GEM mini-Workshop at Fall AGU. All participants to the individual Challenge Metrics Studies will be co-authors. It is still possible to get involved. The final deadline for simulation results submissions to be included in these papers is September 1, 2009. Results of the Metrics Studies 2,3, & 5 will be discussed at GEM mini Workshop at Fall AGU. Reports will be based on simulation results submitted prior to November 15, 2009. There is a plan to arrange a Special Issue at J. Atmospheric & Solar- Terrestrial Physics on Geospace Models Metrics and Validation. The Special issue will include an introductory paper, 3-4 reports summarizing Challenge results, and series of science papers with physics-based analysis. Expected primary focus of science papers are physical parameters addressed by Challenge metric studies. Events selected for metrics Challenge are preferable but not required. Simulation results/visualization tools available at CCMC can be used for research analysis. Participation in the Challenge is not required to submit a paper for the special issue. If you are interested to submit a paper for the Special Issue on Geospace Models Metrics and Validation -- please send a title, authors, and an Abstract to Masha Kuznetsova (Maria.M.Kuznetsova@nasa.gov) before the GEM mini-workshop at Fall AGU. +-------------------------------------------------------------------------+ |To subscribe GEM Messengers, send an e-mail to | | with the following command in the body of your e-mail message: | | subscribe gem | |To remove yourself from the mailing list, the command is: | | unsubscribe gem | | | |To broadcast a message to the GEM community, please contact Peter Chi at | | | |Please use plain text as the format of your submission. | | | |URL of GEM Home Page: http://aten.igpp.ucla.edu/GemWiki | |Workshop Information: http://www.cpe.vt.edu/gem/index.html | +-------------------------------------------------------------------------+