scholarly journals Mean thermal structure of the low-latitude middle atmosphere studied using Gadanki Rayleigh lidar, Rocket, and SABER/TIMED observations

2008 ◽  
Vol 113 (D23) ◽  
Author(s):  
G. Kishore Kumar ◽  
M. Venkat Ratnam ◽  
A. K. Patra ◽  
S. Vijaya Bhaskara Rao ◽  
James Russell
Keyword(s):  
Middle Atmosphere ◽  
Thermal Structure ◽  
Low Latitude ◽  
Rayleigh Lidar

scholarly journals Rayleigh LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) measurements of stratosphere-mesosphere temperature over a southern sub-tropical site, Reunion (20.8° S; 55.5° E): climatology and comparison study

2011 ◽  
Vol 29 (4) ◽  
pp. 649-662 ◽  
Author(s):  
V. Sivakumar ◽  
P. Vishnu Prasanth ◽  
P. Kishore ◽  
H. Bencherif ◽  
P. Keckhut
Keyword(s):  
Middle Atmosphere ◽  
Thermal Structure ◽  
Relative Difference ◽  
Temperature Measurements ◽  
Satellite Measurements ◽  
Quasi Biennial Oscillation ◽  
Height Range ◽  
Rayleigh Lidar ◽  
First Time

Abstract. For the first time, climatology of the middle atmosphere thermal structure is presented, based on 14 years of LIDAR and satellite (HALOE, SABER, CHAMP and COSMIC) temperature measurements. The data is collected over a southern sub-tropical site, Reunion Island (20.8° S; 55.5° E), for the height range between 30 and 60 km. The overall monthly mean temperature shows a maximum of 265–270 K at the stratopause height region from ~44–52 km and peaks during the months of March and November. Furthermore, the temperature profiles are compared with different satellite datasets (HALOE, CHAMP, COSMIC and SABER) and the results are found to be in reasonable agreement with each other, although a relative difference in temperature of ± 5 to 6 K is noticed. In comparison, LIDAR shows higher/lower temperatures for the lower mesosphere/upper stratosphere height region. The differences in temperature measured by the LIDAR and satellite measurements are analogous with previous results available elsewhere. Long-term temperature measurements are used to further study seasonal oscillations, especially annual, semi-annual and quasi-biennial oscillations. In comparison with SAO, the measured spectral amplitudes of AO shows dominant amplitudes in both the upper stratosphere and lower mesosphere height regions. Using LIDAR and the other satellite measurements, the quasi-biennial oscillation was found to be approximately 26 months. The spectral amplitudes are comparable to the results reported earlier by other researchers.

scholarly journals Observations of a middle atmosphere thermal structure over Durban using a ground-based Rayleigh LIDAR and satellite data

2012 ◽  
Vol 108 (1/2) ◽  
Author(s):  
Nkanyiso Mbatha ◽  
Venkataraman Sivakumar ◽  
Hassan Bencherif ◽  
Sandile B. Malinga ◽  
Sadhasivan R. Pillay ◽  
...  
Keyword(s):  
Satellite Data ◽  
Middle Atmosphere ◽  
Thermal Structure ◽  
Rayleigh Lidar

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

scholarly journals On the role of dust storms in triggering atmospheric gravity waves observed in the middle atmosphere

2011 ◽  
Vol 29 (9) ◽  
pp. 1647-1654 ◽  
Author(s):  
S. K. Das ◽  
A. Taori ◽  
A. Jayaraman
Keyword(s):  
Gravity Waves ◽  
Dust Storm ◽  
Hot Spots ◽  
Middle Atmosphere ◽  
Thermal Structure ◽  
Dust Storms ◽  
Storm Events ◽  
Atmospheric Perturbations ◽  
Atmospheric Gravity

Abstract. Lower atmospheric perturbations often produce measurable effects in the middle and upper atmosphere. The present study demonstrates the response of the middle atmospheric thermal structure to the significant enhancement of the lower atmospheric heating effect caused by dust storms observed over the Thar Desert, India. Our study from multi-satellite observations of two dust storm events that occurred on 3 and 8 May 2007 suggests that dust storm events produce substantial changes in the lower atmospheric temperatures as hot spots which can become sources for gravity waves observed in the middle atmosphere.

scholarly journals Recent Dynamic Studies on the Middle Atmosphere at Mid- and Low-Latitudes Using Rayleigh Lidar and Other Technologies

2018 ◽  
pp. 757-776
Author(s):  
Alain Hauchecorne ◽  
Sergey Khaykin ◽  
Philippe Keckhut ◽  
Nahoudha Mzé ◽  
Guillaume Angot ◽  
...  
Keyword(s):  
Middle Atmosphere ◽  
Dynamic Studies ◽  
Low Latitudes ◽  
Rayleigh Lidar

Middle atmospheric thermal structure over sub-tropical and tropical Indian locations using Rayleigh lidar

2012 ◽  
Vol 63-64 ◽  
pp. 36-48 ◽  
Author(s):  
Som Sharma ◽  
S. Sridharan ◽  
H. Chandra ◽  
S. Lal ◽  
Y.B. Acharya
Keyword(s):  
Thermal Structure ◽  
Rayleigh Lidar

scholarly journals Rayleigh lidar observations of temperature over Tsukuba: winter thermal structure and comparison studies

1999 ◽  
Vol 51 (7-8) ◽  
pp. 825-832 ◽  
Author(s):  
S. P. Namboothiri ◽  
N. Sugimoto ◽  
H. Nakane ◽  
I. Matsui ◽  
Y. Murayama
Keyword(s):  
Thermal Structure ◽  
Rayleigh Lidar ◽  
Lidar Observations
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