NASA Logo, National Aeronautics and Space Administration
NASA Space Science Data Coordinated Archive Header

3-Min Interplanetary Plasma Parameters, ASCII


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


This data set was created at NSSDC by converting 3-Min Interplanetary Plasma Parameters (SPHE-00727) originally written in EBCDIC to ASCII. This experimenter-supplied data set contains time-ordered ion solar wind measurement. Data include the plasma thermal speed, number density, flow speed, and GSE longitude and latitude of the flow direction. These parameters were derived using a gamma distribution function, which in the solar wind is essentially equivalent to a convected isotropic Maxwellian distribution function. The parameter set was calculated based on a 2.7-min spectrum, and changes in the solar wind on time scales shorter than that period, such as the passage of an interplanetary shock front, will invalidate the parameter set calculated from data taken during that interval. The record contents were left unchanged relative to the contents of the original data set, except that Jan 1 was converted to day 1 (instead of day 0)and the ending 8 blanks in each logical record were removed.


  • Space Physics: Magnetospheric Studies
  • Space Physics: Heliospheric Studies

Additional Information



Questions and comments about this data collection can be directed to: Dr. Young-In Won



NameRoleOriginal AffiliationE-mail
Dr. Alan J. LazarusData ProviderMassachusetts Institute of Technology
Dr. Alan J. LazarusGeneral ContactMassachusetts Institute of Technology
[] NASA Logo -