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			 **   THE GEM MESSENGER   **
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						     Volume 14, Number 48
						     November 26, 2004

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LWS CDAW on Geomagnetic Storms
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From: Nat Gopalswamy <gopals@fugee.gsfc.nasa.gov>

LWS CDAW on Geomagnetic Storms
George Mason University, Fairfax, VA
March 15-18, 2005
  
A new Coordinated Data Analysis Workshop (CDAW) to bring together 
scientists of Living With a Star (LWS) disciplines to interact and
establish long-term collaborations that can effectively address 
questions related to CMEs, ICMEs, and their connections to geomagnetic 
and ionospheric storms. The focal point of the CDAW will be the set of 
all geomagnetic storms of cycle 23 (until the end of 2003). The number 
of participants will be restricted to a maximum of 60. Our intent is to
attract a set of participants who can contribute data, data products, 
models, and analysis tools to achieve the scientific goals of the CDAW.
This would involve assembling and pre-processing the data sets well ahead
of the CDAW and a lot of effort has to go in much before the workshop. 
The data from the CDAW and the results produced during the CDAW will be 
made available on line after the workshop to the broader scientific and
space weather community for continued research.

Scientific Questions:
- What are the primary characteristics that make a CME geoeffective?
- Can we infer the magnetic field structure (Bz south) from the 
  photospheric magnetograms?
- What is the relationship between solar filaments and the ICME flux
  ropes?
- How do ICMEs affect the ring current and radiation belts?
- How is the total electron content (TEC) affected by the ionospheric
  storms?
- What types of ICMEs are most geoeffective?
- What is the best way to predict the intensity of geomagnetic storms?
- Why do some storms have no associated CMEs?
- Why don't some Earth-directed CMEs cause storms?
- What is the missing physics in MHD models and where do they need
  improvement?

The following working groups have been formed to address specific 
questions and the findings will be summarized at the end of the workshop. 

(1) Drivers of geomagnetic storms (CME and solar surface source region,
    CME/ICME relation): D. Webb, D. Berdichevsky
(2) Radiation belt response to geomagnetic storms Mike Liemohn, 
    Mary Hudson
(3) Geomagnetic storm mechanisms (Plasmasphere, ring current, radiation 
    belts): Reiner Friedel*, Margaret Chen
(4) Ionospheric Storms: John Foster, Tim Fuller-Rowell*
(5) Prediction of Geomagnetic storms: R. Lopez*, X. Li*
*To be confirmed

Arrangements will be made to publish the initial results as letter papers
and a conference will follow after allowing enough time to complete 
collaborative work started at the CDAW.

If you have any questions or comments, please contact Nat Gopalswamy, 
Jie Zhang or any member of the organizing committee. 

SOC: Nat Gopalswamy (Chair), Ron Lepping, David Webb, B. Giles,
O. C. St. Cyr, M. Guhathakurta, H. Singer, K. Dere, J. Zhang, 
M. K. Hudson

LOC: J. Zhang (Chair, data coordinator), S. Yashiro, K. Dere, 
Shealia Brown, and Yang Liu

Details at: http://cdaw.gsfc.nasa.gov/geomag_cdaw/

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