Horizontal wind data in the mesosphere and lower thermosphere estimated from 
the meteor radar observations at Kototabang (netCDF format)

Note:

1. The long_name of "num", number of observed meteors per hour", was incorrect in the 
   older version (1.1.1 and earlier) of netCDF data. The variable is not hourly rate 
   but total number of meteors in a time and height bin (e.g., +/-2 km and +/- 60 
   minutes for h2t60). The data itself is not wrong. Please do not misunderstand the 
   meaning of the number of meteors when you use this data for any analyses and 
   interpretations of meteor distribution. The long_name has been fixed in version 1.1.2.

2. The latest version number of the text and netCDF files is different, but the contents
   of both the data are the same.

3. SINCE TIME INFOMRTION OF ALL THE 1-MONTH NETCDF DATA WAS INCORRECT, WE MODIFIED TIME 
   DATA AND REPLACED THEM WITH CORRECT ONES. PLEASE DO NOT USE THE WIND DATA DOWNLOADED 
   FROM THIS HOMEPAGE BEFORE AUGUST 26, 2011 FOR ANY ANALYSES AND PUBLICATIONS.

Description:

  The horizontal wind data in the mesosphere and lower thermosphere (70-110 km) estimated 
from the meteor wind radar observations at Kototabang, Indonesia (0.20S, 100.32E, 865m MSL). 
The wind data are calculated from the original observation data with a weighting function. 
They are stored in the netCDF (network Common Data Form) file named 
Wk(year)(month).(resolution).nc or Wk(year)(month)(day).(resolution).nc. The resolution 
abbreviations are h2t60min00, h2t60min30, h4t60min00 and h4t60min30. For example, the h2t60 
means weighted average of the horizontal wind with Gaussian factors over +/-2 km in height 
and +/-60 minutes in time. In this case, the number of meteors stands for that of data points 
included in the height and time window. 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 2 km and 60 
minutes. The netCDF file includes time, height, zonal and meridional winds, standard deviations 
of zonal and meridional winds, and number of meteors.
 Details are described in the metadata.


Data revision:

  Data version 1.1.2 was released on February 2, 2012. In this version, we revised long_name of 
num variable in all the netCDF files. Please refer to the release note 
(Release_note_kototabang_netcdf_data.txt).

Revision history:

13FEB2012  A. Shinbori  :  Updated metadata file for version 1.1.2.
13FEB2012  A. Shinbori  :  Released version 1.1.2.
18OCT2011  A. Shinbori  :  Updated metadata file for version 1.1.1.
18OCT2011  A. Shinbori  :  Released version 1.1.1.
29JUL2011  A. Shinbori  :  Updated metadata file for version 1.1.
29JUL2011  A. Shinbori  :  Released version 1.1.
14JUN2011  A. Shinbori  :  Updated metadata file.
13JUN2011  A. Shinbori  :  Released initial version.