Results 31 to 40 of about 20,282 (172)

Studying a Long-Lasting Meteor Trail from Stereo Images and Radar Data

open access: yesAtmosphere, 2021
Unique observation of a long-lasting meteor trail of about half an hour duration is described. The trail resulted from a burning meteor from the Leonid storm flux in the middle latitudes over eastern Siberia.
Roman V. Vasilyev   +6 more
doaj   +1 more source

Meteor radar vertical wind observation biases and mathematical debiasing strategies including the 3DVAR+DIV algorithm [PDF]

open access: yesAtmospheric Measurement Techniques, 2022
Meteor radars have become widely used instruments to study atmospheric dynamics, particularly in the 70 to 110 km altitude region. These systems have been proven to provide reliable and continuous measurements of horizontal winds in the mesosphere and ...
G. Stober   +18 more
doaj   +1 more source

24. Radar meteor orbits [PDF]

open access: yesSymposium - International Astronomical Union, 1968
Regular and numerous measurements of individual radiants and velocities of meteors were carried out in Jodrell Bank (Davies and Gill, 1960), Kharkov (Kaščeev et al., 1960; Kaščeev and Lebedinec, 1961), Adelaide (Nilsson, 1964) and as part of the Harvard Radio Meteor Project in U.S.A. (Hawkins, 1962).
openaire   +1 more source

A Comparison of Meteor Radar Observation over China Region with Horizontal Wind Model (HWM14)

open access: yesAtmosphere, 2021
This paper compares the wind fields measured by the meteor radar at Mohe, Beijing, Wuhan, and Sanya stations and horizontal wind model (HWM14) predictions.
Qiong Tang   +6 more
doaj   +1 more source

Ozone Measurements with Meteors: A Revisit [PDF]

open access: yes, 2017
Understanding the role of ozone in the Mesosphere/Lower Thermosphere (MLT) region is essential for understanding the atmospheric processes in the upper atmosphere.
Han, Summer Xia, Ye, Quan-Zhi
core   +2 more sources

Two-dimensional wind field observation based on multistatic meteor radars in central and eastern China

open access: yes地球与行星物理论评
All-sky meteor radars have become a reliable and widely used tool for observing horizontal winds in the mesosphere and lower thermosphere (MLT) region. This provides vital data support for the study of dynamics in this region.
Maolin Lu   +5 more
doaj   +1 more source

The Heights of Radar Meteors

open access: yesJournal of geomagnetism and geoelectricity, 1991
Previous measurements of the heights of radio meteors using VHF radars have distributions peaking at around 95km with few meteors detected above 105km. Using HF radars (frequencies 2 and 6MHz) near Adelaide, South Australia, we have now shown that there are many more meteors than previously believed ablating at above 100km, with the peak being at 110 ...
D. STEEL, W. G. ELFORD
openaire   +2 more sources

Mesospheric radar wind comparisons at high and middle southern latitudes

open access: yesEarth, Planets and Space, 2018
We compare hourly averaged neutral winds derived from two meteor radars operating at 33.2 and 55 MHz to estimate the errors in these measurements.
Iain M. Reid   +3 more
doaj   +1 more source

Mesospheric gravity wave momentum flux estimation using hybrid Doppler interferometry [PDF]

open access: yesAnnales Geophysicae, 2017
Mesospheric gravity wave (GW) momentum flux estimates using data from multibeam Buckland Park MF radar (34.6° S, 138.5° E) experiments (conducted from July 1997 to June 1998) are presented.
A. J. Spargo   +5 more
doaj   +1 more source

Meteor radar prototype testing and data quality comparison analysis for Phase II of Chinese Meridian Project

open access: yes地球与行星物理论评
The Phase Ⅱ of Chinese Meridian Project will deploy 10 meteor radar systems in China. To promote the advancement of domestic ground-based observation technologies, the project managing headquarters are engaged in a special campaign for the localization ...
Zhiqing Chen   +8 more
doaj   +1 more source

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