CDAWeb and SSCWeb:  Expanding Correlative Sun-Earth-Connections
Science Services in the New Era of IMAGE and Cluster

  R.E. McGuire 1
  R.M. Candey 1
  S.F. Fung  1
  J.L. Green 1
  R.L. Kessel 1
  T.J. Kovalick 2

  1 Space Physics Data Facility, Code 632, NASA's Goddard Space Flight
Center, Greenbelt, MD 20771, USA
  2 Raytheon ITSS, Code 630, NASA's Goddard Space Flight Center,
Greenbelt, MD 20771, USA

The Coordinated Data Analysis [Workshop] Web service (CDAWeb)
supports graphical and data retrieval access to a uniquely broad and
still growing database of multi-mission Sun-Earth-Connections (SEC)
data.   SSCWeb serves satellite orbits and various multi-mission
conjunctions queries.  By May 2001, CDAWeb will be serving public
data from all IMAGE instruments and Cluster Summary Parameters, as
well as Cluster Prime Parameters to authorized Cluster science
investigators.   These systems make current data quickly accessible
to a wide research community and immediately available in the context
of simultaneous data from almost all other current space physics
missions.  These systems are first working prototypes for delivering
the class of integrated, multi-mission data view essential to the
programs like Living with a Star (LWS).

These systems' databases, capabilities, and usage continue to grow.
CDAWeb has served 150,000 separate plots and listings in the last
year alone, SSCWeb 26000 listings, query results and plots.  CDAWeb
now has over 1450 days (4 years) with data from more 100 data sets
available for  every day.   Over the last year, CDAWeb has been
extended to >350 GBytes and added new datasets from Wind, Polar and
IMP-8, as well as ongoing flows of data from many other missions.
CDAWeb remains supported by three mirror sites (in Germany-MPE,
England-RAL and Japan-ISAS) as well as by the primary site at
Goddard.  ASCII listing and file retrieval services have been
extended to include compressed (gzip) and multiple-file combined
(tar) "one-keystroke" retrievals.

Supported by the NASA Office of Space Science, CDAWeb and SSCWeb are
joint efforts of the NASA GSFC Space Physics Data Facility (SPDF) and
the National Space Science Data Center (NSSDC).  These services are
only possible in turn by data flows from various project data
facilities and the work of the instrument science teams on the many
missions now supported.

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Submitted to the Spring 2001 AGU Meeting, Boston, Massachusetts