The NSSDC-created, uniformized, multisource heliospheric magnetic fields and plasma data set and accompanying World Wide Web (WWW)-based interface, together called COHOWeb, has won a 1996 Goddard Productivity Enhancement Award. The uniformization process involved casting magnetic field vectors and spacecraft position data, each of which arrived at NSSDC in a multiplicity of coordinate systems, into common coordinate systems. Adding to the value-added aspect of the COHOWeb data base were certain error detection and removal, and the creation of records in which the independently arriving field data, plasma data, and spacecraft position data were merged into single records.
The WWW-based interface enables easy user specification of physical parameters and time spans desired, and subsequent data access, display, and retrieval of data files in user-specified formats.
A key motivator for building this uniform data base, initially containing 100 spacecraft-years of data, was to facilitate multipoint analyses of heliospheric phenomena. The existence and uniformity of this data set eliminates the need for many researchers' studying such phenomena to find and acquire needed data from multiple sources and to perform needed uniformizations themselves. The Goddard Space Flight Center (GSFC) awards selection panel also recognized this benefit as a productivity enhancement for the heliospheric science community.
NSSDC COHOWeb team members sharing in the award were (alphabetically) John Cooper, Joseph King, Jason Mathews, Natasha Papitashvili, Sardi Parthasarathy, and Syed Towheed. COHOWeb is further described elsewhere in this issue and is accessible at http://nssdc.gsfc.nasa.gov/cohoweb/cw.html.
Author:Miranda Beall (firstname.lastname@example.org)