scholarly journals MU radar observations of H+ions in the topside ionosphere

1998 ◽  
Vol 103 (A9) ◽  
pp. 20697-20704 ◽  
Author(s):  
S. Kawamura ◽  
Y. Otsuka ◽  
W. L. Oliver ◽  
N. Balan ◽  
S. Fukao
Keyword(s):  
Topside Ionosphere ◽  
Radar Observations ◽  
Mu Radar

scholarly journals Convective Instability Underneath Midlevel Clouds: Comparisons between Numerical Simulations and VHF Radar Observations

2015 ◽  
Vol 54 (11) ◽  
pp. 2217-2227 ◽  
Author(s):  
Atsushi Kudo ◽  
Hubert Luce ◽  
Hiroyuki Hashiguchi ◽  
Richard Wilson
Keyword(s):  
Numerical Simulations ◽  
Initial Conditions ◽  
Radiosonde Data ◽  
Cloud Base ◽  
Very High Frequency ◽  
Vhf Radar ◽  
Turbulent Layer ◽  
Radar Observations ◽  
Mu Radar ◽  
Upper Level

AbstractDeep turbulent layers can sometimes be observed on the underside of clouds that extend above upper-level frontal zones. In a recent study based on 3D numerical simulations with idealized initial conditions, it was found that midlevel cloud-base turbulence (MCT) can result from Rayleigh–Bénard-like convection as a result of cooling by sublimation of precipitating snow into dry and weakly stratified subcloud layers. In the present study, numerically simulated MCT was compared with a turbulent layer detected by the very high-frequency (VHF) middle- and upper-atmosphere (MU) radar during the passage of an upper-level front topped by clouds. The simulations were initialized with thermodynamic parameters derived from simultaneous radiosonde data. It was found that some important features of the simulated MCT (such as the scale of convection and vertical wind velocity perturbations) agreed quantitatively well with those reported in radar observations. Even if the possibility of other generation mechanisms cannot be ruled out, the good agreement strongly suggests that the MU radar actually detected MCT.

scholarly journals MU Radar observations of kilometer-scale waves in the midlatitude lower E-region

2000 ◽  
Vol 27 (22) ◽  
pp. 3667-3670 ◽  
Author(s):  
P. B. Rao ◽  
M. Yamamoto ◽  
A. Uchida ◽  
I. Hassenpflug ◽  
S. Fukao
Keyword(s):  
Radar Observations ◽  
Mu Radar ◽  
E Region

scholarly journals MU radar observations of tropopause variations by using clear air echo characteristics

1998 ◽  
Vol 50 (4) ◽  
pp. 361-370 ◽  
Author(s):  
E. Hermawan ◽  
T. Tsuda ◽  
T. Adachi
Keyword(s):  
Radar Observations ◽  
Mu Radar

Radar observations of the onset of current driven instabilities in the topside ionosphere

1988 ◽  
Vol 15 (2) ◽  
pp. 160-163 ◽  
Author(s):  
J. C. Foster ◽  
C. del Pozo ◽  
K. Groves ◽  
J.-P. St. Maurice
Keyword(s):  
Topside Ionosphere ◽  
Radar Observations

Annual variations of the ionosphere: A review based on MU radar observations

2000 ◽  
Vol 25 (1) ◽  
pp. 153-162 ◽  
Author(s):  
N. Balan ◽  
Y. Otsuka ◽  
S. Fukao ◽  
M.A. Abdu ◽  
G.J. Bailey
Keyword(s):  
Radar Observations ◽  
Annual Variations ◽  
Mu Radar

MU radar observations of the aspect sensitivity of backscattered VHF echo power in the troposphere and lower stratosphere

Radio Science ◽  
1986 ◽  
Vol 21 (6) ◽  
pp. 971-980 ◽  
Author(s):  
Toshitaka Tsuda ◽  
Toru Sato ◽  
Kazuo Hirose ◽  
Shoichiro Fukao ◽  
Susumu Kato
Keyword(s):  
Lower Stratosphere ◽  
Radar Observations ◽  
Mu Radar ◽  
Aspect Sensitivity

scholarly journals Ionospheric incoherent scatter measurements with the MU radar: Observations of F-region electrodynamics.

1988 ◽  
Vol 40 (8) ◽  
pp. 963-985 ◽  
Author(s):  
W. L. OLIVER ◽  
S. FUKAO ◽  
T. SATO ◽  
T. TSUDA ◽  
S. KATO ◽  
...  
Keyword(s):  
Radar Observations ◽  
Incoherent Scatter ◽  
F Region ◽  
Mu Radar
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