Horizontal wind data in the mesosphere and lower thermosphere estimated from the meteor 
wind radar at Shigaraki (text format)

Description:

  The horizontal wind data in the middle-latitude mesosphere and lower thermosphere 
(70-110 km) estimated from the meteor wind observations at Shigaraki MU Observatory 
in Shiga Prefecture, Japan (34.86N, 136.11E, 385m MSL). The wind data are calculated 
from the original observation data with a weighting function. They are stored in the text 
file named Ws(year)(month)(day).(resolution).txt or Ws(year)(month).(resolution).txt. The 
resolution abbreviations are h2t60min00, h2t60min30, h4t60min00 and h4t60min30. For 
example, the h2t60 means weighted average with Gaussian factors over +/-2 km in height 
and +/-60 minutes in time. The min00 shows that the center of the Gaussian window 
corresponds to 00 minute of every hour. The intervals of the wind data are every 2km and 60 
minutes. The text file includes year, day of year, time (local time), height, zonal and meridional 
winds, standard deviations of zonal and meridional winds, number of meteors used for the 
weighted average of the horizontal wind and two internal values.
 Details are described in the metadata.

Data revision:

  Initial version (1.0) was released on May 13, 2013.

Text data format:

yydddhhmmhhh  u (m/s)  v (m/s)  sigma-u  sigma-v  N-of-m    int1    int2
79 73 3 0 88   71.6     2.4   108.3    39.6     5.0  1146.9     6.3
79 73 3 0 94   47.0   -13.2    76.5    18.4     6.0   634.9    10.0
79 73 3 0 96  -18.0   -26.1    57.4    27.2     6.0  1122.8    12.7
79 73 3 0 98  -13.3   -29.9    55.4    27.5     7.0  1421.5    10.6
79 73 3 0100   16.0   -22.3    62.6    20.9     5.0  1053.8     5.7
79 73 3 0104   30.6   -31.2    92.4    23.8     9.0   890.4    22.2
79 73 3 0106   75.2   -31.6    88.4    23.6     8.0   909.8    15.8

              yy: year
             ddd: day of year
              hh: hour (Universal time)
              mm: minute
         hhh(km): height
      u, v (m/s): zonal and meridional winds 
sigma-u, v (m/s): standard deviations of zonal and meridional winds
          N-of-m: number of meteor trails used to determine the horizontal wind.
            int1: internal check value
            int2: internal check value
                  (The parameters "int1" and "int2" are not required for analysis 
                   of the wind data.)

Revision history:

13May2013  A. Shinbori  :  Updated metadata file.
13May2013  A. Shinbori  :  Released initial version.