NSSDCA ID: SPIO-00291
Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)
Time span: 1970-01-01 to 1971-12-30
This data set contains otal electron content (TEC) data [from the Faraday rotation of the 137.35 (or 136.47) MHz telemetry carrier] on one IBM/360, binary magnetic tape. Each record is 1196 bytes long and contains data for one day. The original values were recorded every 5 min (288 observations per day) on ATS 1. The magnetic field effect for the entire column is taken to be that at 400 km, which for data reduction purposes is assumed to be at the altitude of maximum electron content (and Faraday rotation). This point of intersection of 400 km and the propagation path is called the ionospheric point (IP), and the values have been converted to the TEC contained in a vertical column through this point. Each record includes a receiving station code, year and day number (UT), modified Julian day number, height of the IP (400 km), latitude and east longitude of the IP, east longitude of ATS 1, the ratio of the originally observed Faraday rotation angle to the original TEC measurement, length of the mean period (7 days), and the 288 values of both the mean TEC and the deviation from the mean. The TEC value, I, for each 5-min period is the sum of the 7-day mean value of the TEC, <I>, centered on the 5-min period, plus the deviation from this mean, delta I, i.e., I = <I> + delta I.
Questions and comments about this data collection can be directed to: Dr. Dieter K. Bilitza
Name | Role | Original Affiliation | |
---|---|---|---|
Dr. Aldo V. Darosa | Data Provider | Stanford University | darosa@ee.stanford.edu |