Design and analysis of uitra-narrow filter of Rayleigh lidar

2020 ◽  
Vol 49 (2) ◽  
pp. 205003
Author(s):  
韩 飞 Han Fei ◽  
刘恒嘉 Liu Hengjia ◽  
孙东松 Sun Dongsong ◽  
韩於利 Han Yuli ◽  
张楠楠 Zhang Nannan ◽  
...  
Keyword(s):  
1991 ◽  
Vol 96 (D3) ◽  
pp. 5169 ◽  
Author(s):  
R. Wilson ◽  
M. L. Chanin ◽  
A. Hauchecorne

2019 ◽  
Vol 124 (2) ◽  
pp. 451-467 ◽  
Author(s):  
P. Llamedo ◽  
J. Salvador ◽  
A. Torre ◽  
J. Quiroga ◽  
P. Alexander ◽  
...  

2007 ◽  
Vol 85 (2) ◽  
pp. 173-187 ◽  
Author(s):  
W K Hocking ◽  
P S Argall ◽  
R P Lowe ◽  
R J Sica ◽  
H Ellinor

A new method is introduced that allows meteor radars to potentially produce height-dependent temperatures, rather than simply averages over the meteor region. The method is applied to data from the Clovar radar, near London, Ontario, and then a three-way comparison between Rayleigh lidar temperatures, hydroxyl temperatures, and meteor temperatures is undertaken. The three methods prove to be complementary. The OH measurements have good accuracy, but suffer slightly from lack of precise knowledge about their height and the fact that they are effectively integrated over the depth of the OH layer. The lidar temperatures are measured at well-defined altitudes and have better accuracy than the meteor method. The meteor temperatures have the largest errors, but still provide sufficient accuracy for many types of atmospheric studies, and have the advantage that these measurements can be made 24 h a day and in all sky conditions (including during cloud and strong sunlight and moonlight). The measurements from these instruments are complementary in that they are useful for studying the temperature on different time and altitude scales. PACS No.: 94.10.Dy


Author(s):  
Alain Hauchecorne ◽  
Sergey Khaykin ◽  
Philippe Keckhut ◽  
Nahoudha Mzé ◽  
Guillaume Angot ◽  
...  

2012 ◽  
Vol 30 (1) ◽  
pp. 27-32 ◽  
Author(s):  
A. Taori ◽  
A. Jayaraman ◽  
K. Raghunath ◽  
V. Kamalakar

Abstract. The vertical temperature profiles in a typical Rayleigh lidar system depends on the backscatter photon counts and the CIRA-86 model inputs. For the first time, we show that, by making simultaneous measurements of Rayleigh lidar and upper mesospheric O2 temperatures, the lidar capability can be enhanced to obtain mesospheric temperature profile up to about 95 km altitudes. The obtained results are compared with instantaneous space-borne SABER measurements for a validation.


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

2006 ◽  
Vol 24 (10) ◽  
pp. 2481-2491 ◽  
Author(s):  
V. Deepa ◽  
G. Ramkumar ◽  
B. V. Krishna Murthy

Abstract. The altitude profiles of temperature fluctuations in the stratosphere and mesosphere observed with the Rayleigh Lidar at Gadanki (13.5° N, 79.2° E) on 30 nights during January to March 1999 and 21 nights during February to April 2000 were analysed to bring out the temporal and vertical propagation characteristics of gravity wave perturbations. The gravity wave perturbations showed periodicities in the 0.5–3-h range and attained large amplitudes (4–5 K) in the mesosphere. The phase propagation characteristics of gravity waves with different periods showed upward wave propagation with a vertical wavelength of 5–7 km. The mean flow acceleration computed from the divergence of momentum flux of gravity waves is compared with that calculated from monthly values of zonal wind obtained from RH-200 rockets flights. Thus, the contribution of gravity waves towards the generation of Stratospheric Semi Annual Oscillation (SSAO) is estimated.


1994 ◽  
Vol 21 (14) ◽  
pp. 1539-1542 ◽  
Author(s):  
Y. Murayama ◽  
T. Tsuda ◽  
R. Wilson ◽  
H. Nakane ◽  
S. A. Hayashida ◽  
...  

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