Time-height plot of horizontal wind data in the mesosphere and lower thermosphere estimated from the meteor wind observation of the MU radar at Shigaraki (gif format) Notes: 1. During three periods (2000/10/20-26, 2001/3/23-4/1, and 2001/7/8-15), the MU radar was operated in alternate meteor and ionosphere observation modes, with 30 minutes for meteor mode and 1 hour for ionosphere mode. Therefore, the number of meteors becomes apparently smaller, compared to that of regular meteor wind observations, and it varies with time. For example, the number of meteors of 'min00' data changes discontinuously at 3n+1(n = 0, 1, 2,...7) hours in all heights. 2. The wind data in 2004 are not available due to the problem of the MU radar interferometer. Description: The time-height plot of horizontal wind data in the mesosphere and lower thermosphere (70-110 km) estimated from the meteor wind observation of the MU rdar at Shigaraki MU Observatory in Shiga Prefecture, Japan (34.86N, 136.11E, 385m MSL). File names are composed of date and variable abbreviation: W(year)(month)(day).(resolution).gif (daily plot), W(year)(month).(resolution).gif (monthly plot) and W(year).(resolution).gif (yearly plot). The resolution abbreviations are h1t60min00, h1t60min30, h2t60min00 and h2t60min30 (please refer to the readme file of text or netCDF data for details of the resolution abbreviations). These plots are made using the netCDF data of each resolution in time and height. For yearly plot, only the h2t60min00 and h4t60min00 data are used and averaged for each day. The daily average is done if there are more than one valid data in all of the four time zones (0-5, 6-11, 12-17 and 18-24 h). If you want to know more information of this data, please access the metadata URL. Link to Metadata: http://www.rish.kyoto-u.ac.jp/mu/meteor/to_meta/mur-meteor-gif.html Data revision: Initial version was released on July 30, 2012. Revision history: 30JUL2012 A. Shinbori : Updated metadata file. 30JUL2012 A. Shinbori : Initial version.