scholarly journals A comparison of Fabry‐Perot interferometer and meteor radar wind measurements near the polar mesopause region

2021 ◽  
Author(s):  
Changsup Lee ◽  
Geonhwa Jee ◽  
Hosik Kam ◽  
Qian Wu ◽  
Young‐Bae Ham ◽  
...  
Keyword(s):  
Meteor Radar ◽  
Mesopause Region ◽  
Fabry Perot ◽  
Wind Measurements

scholarly journals Meteor radar observations of mesopause region long-period temperature oscillations

2016 ◽  
Vol 14 ◽  
pp. 169-174
Author(s):  
Ch. Jacobi ◽  
N. Samtleben ◽  
G. Stober
Keyword(s):  
Time Scales ◽  
Lower Thermosphere ◽  
Planetary Waves ◽  
Meteor Radar ◽  
Mesopause Region ◽  
Radar Observations ◽  
Long Period ◽  
Temperature Oscillations ◽  
Wind Measurements

Abstract. Meteor radar observations of mesosphere/lower thermosphere (MLT) daily temperatures have been performed at Collm, Germany since August 2004. The data have been analyzed with respect to long-period oscillations at time scales of 2–30 days. The results reveal that oscillations with periods of up to 6 days are more frequently observed during summer, while those with longer periods have larger amplitudes during winter. The oscillations may be considered as the signature of planetary waves. The results are compared with analyses from radar wind measurements. Moreover, the temperature oscillations show considerable year-to-year variability. In particular, amplitudes of the quasi 5-day oscillation have increased during the last decade, and the quasi 10-day oscillations are larger if the equatorial stratospheric winds are eastward.

scholarly journals Meteor radar measurements of mean winds and tides over Collm (51.3° N, 13° E) and comparison with LF drift measurements 2005–2007

2011 ◽  
Vol 9 ◽  
pp. 335-341 ◽  
Author(s):  
C. Jacobi
Keyword(s):  
Diffusion Coefficients ◽  
Lower Thermosphere ◽  
Low Frequency ◽  
Meteor Radar ◽  
Mesopause Region ◽  
Wind Measurements ◽  
Radar Measurements ◽  
Long Term Trend ◽  
Temporal Overlap

Abstract. An all-sky VHF meteor radar (MR) has been continuously operated at Collm (51.3° N, 13° E) since summer 2004. The radar measures meteor parameters, diffusion coefficients, and horizontal winds in the mesopause region. There exists a temporal overlap of the MR wind measurements with co-located low-frequency (LF) ionospheric drift measurements until 2007. Comparison of MR and LF semidiurnal tidal phases allows to empirically determine the virtual height overestimation of LF reflection heights due to the group retardation of LF waves. LF reference heights have to be reduced by up to 20 km to match real heights. Correction of LF heights for group retardation allows to determine the wind underestimation by the LF method compared with meteor radar measurements and opens the possibility to continue long-term trend analysis using mesosphere/lower thermosphere winds.

Comprehensive comparison of mesospheric wind from Fabry-Perot interferometer and meteor radar at King Sejong Station, Antarctica

2020 ◽  
Author(s):  
Changsup Lee ◽  
Geonhwa Jee ◽  
Qian Wu ◽  
Jeong-Han Kim ◽  
Hosik Kam ◽  
...  
Keyword(s):  
Lower Thermosphere ◽  
Meteor Radar ◽  
Airglow Emission ◽  
Wind Structure ◽  
Fabry Perot ◽  
Airglow Emissions ◽  
Solar Local Time ◽  
Comprehensive Comparison ◽  
Wind Measurements ◽  
Traditional Assumption

<p>Neutral winds in the mesosphere and lower thermosphere (MLT) have been simultaneously observed by Fabry-Perot interferometer (FPI) and meteor radar (MR) at King Sejong Station (KSS), Antarctica from 2017. Because  the airglow emission height sensitively varies with a solar local time and a season, it is not possible to precisely determine what altitude airglow emission occurs from the traditional assumption of fixed airglow layers. Even though a few previous studies suggested representative heights of airglow emission such as OH band and 557.7 nm line, the true height information of these emission are still unknown. In this study, we try to figure out the temporal dependence of the airglow emissions using the KSS FPI and satellite (SABER/MLS) measurements. We also perform a direct comparison between the FPI and the meteor radar wind measurements considering time-varying airglow emission properties based on a correlation analysis. This study presents how the background wind structure can affect wind estimates from the airglow emissions.</p>

Wind measurements of MLT region using the Platteville, CO MEDAC 50MHz meteor radar

2005 ◽  
Vol 67 (13) ◽  
pp. 1211-1215 ◽  
Author(s):  
Santiago de la Peña ◽  
Susan K. Avery ◽  
James P. Avery ◽  
Elías Lau ◽  
Diego Janches
Keyword(s):  
Meteor Radar ◽  
Wind Measurements ◽  
Mlt Region

Mesopause-region tidal variability observed by meteor radar

1997 ◽  
Vol 20 (6) ◽  
pp. 1237-1240 ◽  
Author(s):  
A.G. Beard ◽  
N.J. Mitchell ◽  
P.J.S. Williams ◽  
W. Jones ◽  
H.G. Muller
Keyword(s):  
Meteor Radar ◽  
Mesopause Region ◽  
Tidal Variability

Fabry-Perot-interferometer imaging system for thermospheric temperature and wind measurements

1980 ◽  
Vol 19 (13) ◽  
pp. 2206 ◽  
Author(s):  
G. G. Sivjee ◽  
T. J. Hallinan ◽  
G. R. Swenson
Keyword(s):  
Imaging System ◽  
Fabry Perot ◽  
Wind Measurements

A comparison between thomson scatter and meteor radar wind measurements in the 65–105 km altitude region at Arecibo

1981 ◽  
Vol 29 (3) ◽  
pp. 341-348 ◽  
Author(s):  
J.D. Mathews ◽  
M.P. Sulzer ◽  
C.A. Tepley ◽  
R. Bernard ◽  
J.L. Fellous ◽  
...  
Keyword(s):  
Meteor Radar ◽  
Wind Measurements
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