Ion drift velocity data in the ionosphere derived from incoherent scatter measurements
 with the MU radar (Initial analysis version: text, netCDF and png format)

Description:

  The 1-hour average observation data of ion drift velocity in the ionosphere
(220--450km) taken by the MU radar at Shigaraki in Shiga Prefecture, Japan 
(34.86N, 136.11E, 385m MSL), which has been operated in the incoherent
 scatter observation mode.

Data and file name: 

  Text:   (YYYYMMdd)_drift.txt
  NetCDF: (YYYYMMdd)_drift.nc
  PNG:    (YYYYMMdd)_drift.png

  Details are described in the metadata (text, netcdf and png).


Data format (text data)

  YYYY MM dd  hh    dv1    dv2    dv3    dv4    dv5    dv6    dv7@@dv8    dv9@
  2012  3 15   0   -2.8   42.5   54.6   51.9   86.4  -13.2   19.1  -11.5   21.0
  2012  3 15   1  -61.0   78.5   12.5   46.1   74.0    0.1  -12.4  -35.6   29.3
  2012  3 15   2  -62.8   59.3    6.1   23.2   62.4  -25.1  -23.9  -53.5   19.1
  2012  3 15   3  -55.6  114.1  -34.1   27.1   67.3    1.8  -16.8  -73.0   21.2
  2012  3 15   4  -60.3   75.4   -2.1   33.9   59.7   -9.0  -25.6  -49.4   15.7

  YYYY: Year
  MM:   Month
  dd:   Day
  hh:   Hour(0-23)

  dv1--dv9: Ion Drift Velocity (m/s)

  dv1: Eastward direction perpendicular to the magnetic field line
  dv2: Northward/upward direction perpendicular to the magnetic field line
  dv3: Southward/upward direction parallel to the magnetic field line
  dv4: Vertical direction calculated from northward and southward beams
  dv5: Vertical direction calculated from eastward and westward beams
  dv6: Beam 1 direction  (az, ze) = (355, 20)
  dv7: Beam 2 direction           = ( 85, 20)
  dv8: Beam 3 direction           = (175, 20)
  dv9: Beam 4 direction           = (265, 20)


  
Data revision: Initial version was released on October 15, 2012. Revision history: 15OCT2012 : Updated metadata file. 15OCT2012 : Initial version for numerical data. Updated PNG data.