Rayleigh lidar observations of planetary waves in the middle atmosphere over Gadanki (13.5°N, 79.2°E)

2006 ◽  
Vol 68 (8) ◽  
pp. 901-910 ◽  
Author(s):  
P. Kishore ◽  
S.P. Namboothiri ◽  
K. Igarashi ◽  
V. Sivakumar ◽  
S. Thulasiraman ◽  
...  
Keyword(s):  
Middle Atmosphere ◽  
Planetary Waves ◽  
Rayleigh Lidar ◽  
Lidar Observations

scholarly journals Rayleigh lidar observations of enhanced stratopause temperature over Gadanki (13.5° N, 79.2° E) during major stratospheric warming in 2006

2009 ◽  
Vol 27 (1) ◽  
pp. 373-379 ◽  
Author(s):  
S. Sridharan ◽  
S. Sathishkumar ◽  
K. Raghunath
Keyword(s):  
Gravity Wave ◽  
High Latitude ◽  
Planetary Wave ◽  
Planetary Waves ◽  
Stratospheric Warming ◽  
Linear Interaction ◽  
Zonal Wavenumber ◽  
Low Latitudes ◽  
Rayleigh Lidar ◽  
Lidar Observations

Abstract. Rayleigh lidar observations of temperature structure and gravity wave activity were carried out at Gadanki (13.5° N, 79.2° E) during January–February 2006. A major stratospheric warming event occurred at high latitude during the end of January and early February. There was a sudden enhancement in the stratopause temperature over Gadanki coinciding with the date of onset of the major stratospheric warming event which occurred at high latitudes. The temperature enhancement persisted even after the end of the high latitude major warming event. During the same time, the UKMO (United Kingdom Meteorological Office) zonal mean temperature showed a similar warming episode at 10° N and cooling episode at 60° N around the region of stratopause. This could be due to ascending (descending) motions at high (low) latitudes above the critical level of planetary waves, where there was no planetary wave flux. The time variation of the gravity wave potential energy computed from the temperature perturbations over Gadanki shows variabilities at planetary wave periods, suggesting a non-linear interaction between gravity waves and planetary waves. The space-time analysis of UKMO temperature data at high and low latitudes shows the presence of similar periodicities of planetary wave of zonal wavenumber 1.

Rayleigh lidar observations of quasi-sinusoidal waves in the tropical middle atmosphere

2003 ◽  
Vol 108 (D24) ◽  
pp. n/a-n/a ◽  
Author(s):  
K. Rajeev ◽  
K. Parameswaran ◽  
M. N. Sasi ◽  
Geetha Ramkumar ◽  
B. V. Krishna Murthy
Keyword(s):  
Middle Atmosphere ◽  
Rayleigh Lidar ◽  
Lidar Observations

Rayleigh lidar observations of gravity wave characteristics in the middle atmosphere at Gadanki, India (13.5 degrees N, 79.2 degreesE.)

2002 ◽  
Author(s):  
K. Parameswaran ◽  
K. Rajeev ◽  
M. N. Sasi ◽  
Geetha Ramkumar ◽  
B. V. Krishna Murthy ◽  
...  
Keyword(s):  
Gravity Wave ◽  
Middle Atmosphere ◽  
Wave Characteristics ◽  
Rayleigh Lidar ◽  
Lidar Observations

scholarly journals Rayleigh Lidar Observations and Comparisons with TIMED/SABER of Typical Case Studies in Beijing (40.5° N, 116.2° E), China

Atmosphere ◽  
2021 ◽  
Vol 12 (10) ◽  
pp. 1237
Author(s):  
Xu Zou ◽  
Guotao Yang ◽  
Linxiang Chen ◽  
Jihong Wang ◽  
Lifang Du
Keyword(s):  
Layer Thickness ◽  
North China ◽  
Middle Atmosphere ◽  
Temperature Inversion ◽  
Seasonal Distribution ◽  
Typical Case ◽  
Rayleigh Lidar ◽  
Beijing China ◽  
Lidar Observations ◽  
Average Layer Thickness

Based on 139 nights of observational data of the Rayleigh lidar site in Beijing, China (40.5° N, 116.2° E), typical lower MIL cases and their temperature inversion evolution process were reported and compared with the SABER data from the same time. Meanwhile, the seasonal distribution of lower MIL cases over North China was also statistically analyzed. The average inversion temperature of the low MIL is 23.4 K, and the average layer thickness is 4.78 km with an average MIL bottom altitude of 68.2 km. Meanwhile, 65% of the MIL propagates vertically, most of which goes downward. These results show the temperature behavior properties of the lower MIL over North China, which may be helpful for us to further understand middle atmosphere chemical and dynamics processes.

scholarly journals Middle atmosphere temperature trend and solar cycle revealed by long-term Rayleigh lidar observations

2011 ◽  
Vol 116 ◽  
Author(s):  
Tao Li ◽  
Thierry Leblanc ◽  
I. Stuart McDermid ◽  
Philippe Keckhut ◽  
Alain Hauchecorne ◽  
...  
Keyword(s):  
Solar Cycle ◽  
Middle Atmosphere ◽  
Temperature Trend ◽  
Atmosphere Temperature ◽  
Rayleigh Lidar ◽  
Lidar Observations

Gravity waves in the middle atmosphere observed by Rayleigh lidar: 2. Climatology

1991 ◽  
Vol 96 (D3) ◽  
pp. 5169 ◽  
Author(s):  
R. Wilson ◽  
M. L. Chanin ◽  
A. Hauchecorne
Keyword(s):  
Gravity Waves ◽  
Middle Atmosphere ◽  
Rayleigh Lidar

Quasi-stationary planetary waves in the middle atmosphere of Mars

2014 ◽  
Vol 58 (2) ◽  
pp. 309-316 ◽  
Author(s):  
NingNing Wang ◽  
Tao Li ◽  
XianKang Dou
Keyword(s):  
Middle Atmosphere ◽  
Planetary Waves

scholarly journals 11 Years of Rayleigh Lidar Observations of Gravity Wave Activity Above the Southern Tip of South America

2019 ◽  
Vol 124 (2) ◽  
pp. 451-467 ◽  
Author(s):  
P. Llamedo ◽  
J. Salvador ◽  
A. Torre ◽  
J. Quiroga ◽  
P. Alexander ◽  
...  
Keyword(s):  
South America ◽  
Gravity Wave ◽  
Wave Activity ◽  
Rayleigh Lidar ◽  
Lidar Observations
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