The Aureol 3 spacecraft carried the French-Russian ARCAD project's instruments into a low-altitude, near-polar orbit in 1981. ARCAD had auroral electrodynamics instrumentation and objectives similar to NASA's pair of Dynamics Explorer (DE) spacecraft, which were contemporaneous with ARCAD. Very little joint ARCAD/DE analyses have been performed because of the relative inaccessibility of ARCAD data. Descriptions of Aureol 3/ARCAD, its instruments, and the data identified below are available from http://nssdc.gsfc.nasa.gov/cgi-bin/database/www-nmc?81-094A.
NSSDC has just ingested full-resolution ARCAD magnetic field, precipitating particle, and VLF wave data from Y. Galperin of the Space Research Institute of Moscow. The data are for selected periods in the interval October 1981 to April 1985, although 93% of the data are for October 1981 to June 1982. The data, in ASCII, were initially written to a pair of CD-ROMs at NSSDC and are also FTP-accessible from the directory ARCAD on the computer nssdc.gsfc.nasa.gov.
Because the data files for each experiment have a complex structure, NSSDC has provided a software package ARCAD.EXE for MS-DOS and source code ARCAD.C for any other platforms. This software creates output files containing logical records of equal length and time resolution. (The FTP address on the nssdc.gsfc.nasa.gov machine for this software is pub/cdrom/software/dos.)
These new CDs have not been mass-replicated and can be ordered as Write-Once CDs from NSSDC's Coordinated Request and User Support Office (CRUSO) at firstname.lastname@example.org.
Erin D. Gardner, email@example.com, (301) 286-0163
Hughes STX, Code 633, NASA Goddard Space Flight Center
Greenbelt, MD 20771, U.S.A.