Hourly Mesosphere Wind Estimates (Meteor Winds) from GTMS for Stations in Europe and AsiaEntry ID: GTMSMW012
Abstract: This data set contains hourly wind estimates for both the meridional and zonal
components, accompanied by sample standard deviations and meteor hourly rates.
The data are recorded at Obninsk, Kharkov, and Dushanbe in the USSR. The hourly
winds were obtained at the height interval of 92-95 km using ground-based
meteor radars. Measurements are carried out under the GTMS program. Data set
structure ... corresponds to the 'Guide to the International Data Exchange through
the World Data Center's (Meteors)'.
The term 'meteor wind' is used for the mesosphere wind estimates derived from
meteor trail drifts measurements. Ionized meteor trails are produced by
meteoroids (meteor particles) which enter the Earth's atmosphere. A meteor
trail moves in the atmosphere due to the neutral wind and magnetic field.
The radial component of this movement is measured using meteor radar. Estimates
of 'meteor wind' are derived from the set of measurements of radial components
using statistical parameters of antenna pattern. The 'hourly meteor rate' which
is the number of registered meteors for which reliable estimates of radial
components can be obtained can also be determined. Meteoroids occur in the
height interval 80-100 km and are centered at 92-95 km (maximum for the apex
time, near 6 a.m. LT, and minimum for anti-apex time, near 6 p.m. LT ).
The GTMS ( Global Thermosphere Mapping Study ) was an international cooperative
enterprise scheduled for 1985-1986 with several short campaigns. Several
ground-based observational networks were involved in the GTMS campaigns, namely
meteor radars, ionospheric wind stations, incoherent scatter radars, etc. The
main goal of the program was to obtain a global map of thermosphere winds for
main seasonal periods.
Data Set Citation
Version: Not provided
Start Date: 1985-01-10Stop Date: 1985-01-19
Role: METADATA AUTHOR
Email: Scott.A.Ritz at nasa.gov
NASA Goddard Space Flight Center Global Change Master Directory
Province or State: Maryland
Postal Code: 20771
Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 1970-01-01
Last DIF Revision Date: 2018-11-08