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Alouette Synoptic (Alosyn) Scaled Data on Microfilm


Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1962-09-29 to 1964-08-31


This data set, prepared at the Communications Research Centre in Ottawa, Canada, consists of Alouette 1 synoptic data (Alosyn) on reels of 35-mm microfilm. The Alosyn data are tabulations of selected ionospheric parameters which were read (scaled) from the ionogram and, in some cases, also calculated from other scaled values. Four parameters are presented chronologically: (1) plasma frequency at the satellite, (2) plasma frequency at the F2 maximum, (3) maximum frequency of observed sporadic E, and (4) strength of ground echoes. Supporting information includes for the spacecraft position: Greenwich and local mean time, location, magnetic dip, solar zenith angle, Kp, and quality and accuracy notations for some of the scalings. These data are also available on magnetic tape as data set 62-049A-01C and on microfiche as data set 62-049A-01K.

Alternate Names

  • Alosyn-Scaled Data, Mfilm


  • Space Physics: Ionospheric Studies


  • 62-049A-01B

Additional Information



Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office



NameRoleOriginal AffiliationE-mail
Dr. Glen E.K. LockwoodData ProviderDepartment of Communications/Communications Research Centre
Mrs. Elizabeth D. HewensGeneral ContactDepartment of Communications/Communications Research Centre
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