Observational study of quasi-monochromatic gravity waves characteristics in mesopause region with sodium fluorescence Doppler lidar

2017 ◽  
Vol 46 (5) ◽  
pp. 506002
Author(s):  
王 博 Wang Bo ◽  
胡 雄 Hu Xiong ◽  
闫召爱 Yan Zhaoai ◽  
肖存英 Xiao Cunying ◽  
郭商勇 Guo Shangyong ◽  
...  
Keyword(s):  
Observational Study ◽  
Gravity Waves ◽  
Doppler Lidar ◽  
Mesopause Region

scholarly journals Nocturnal Elevated Convection Initiation of the PECAN 4 July Hailstorm

2018 ◽  
Vol 146 (1) ◽  
pp. 243-262 ◽  
Author(s):  
J. W. Wilson ◽  
S. B. Trier ◽  
D. W. Reif ◽  
R. D. Roberts ◽  
T. M. Weckwerth
Keyword(s):  
Gravity Waves ◽  
University Of Wyoming ◽  
Cloud Base ◽  
Doppler Lidar ◽  
Convective Storms ◽  
Multiple Observations ◽  
Western Side ◽  
Convection Initiation ◽  
The University ◽  
Advance Knowledge

AbstractDuring the Plains Elevated Convection at Night (PECAN) experiment, an isolated hailstorm developed on the western side of the PECAN study area on the night of 3–4 July 2015. One of the objectives of PECAN was to advance knowledge of the processes and conditions leading to pristine nocturnal convection initiation (CI). This nocturnal hailstorm developed more than 160 km from any other convective storms and in the absence of any surface fronts or bores. The storm initiated within 110 km of the S-Pol radar; directly over a vertically pointing Doppler lidar; within 25 km of the University of Wyoming King Air flight track; within a network of nine sounding sites taking 2-hourly soundings; and near a mobile mesonet track. Importantly, even beyond 100 km in range, S-Pol observed the preconvection initiation cloud that was collocated with the satellite infrared cloud image and provided information on the evolution of cloud growth. The multiple observations of cloud base, thermodynamic stability, and direct updraft observations were used to determine that the updraft roots were elevated. Diagnostic analysis presented in the paper suggests that CI was aided by lower-tropospheric gravity waves occurring in an environment of weak but persistent mesoscale lifting.

scholarly journals COMPARISON OF WAVE ACTIVITY IN THE MESOPAUSE REGION AT MAIMAGA STATION WITH EOS MLS (AURA) TEMPERATURE DATA AND ACTIVITY OF PLANETARY WAVES AT TIKSI STATION

2019 ◽  
pp. 182-189
Author(s):  
В.И. Сивцева ◽  
П.П. Аммосов ◽  
Г.А. Гаврильева ◽  
И.И. Колтовской ◽  
А.М. Аммосова
Keyword(s):  
Gravity Waves ◽  
Internal Gravity Waves ◽  
Temperature Data ◽  
Planetary Waves ◽  
Winter Period ◽  
Temperature Profiles ◽  
Night Temperature ◽  
Mesopause Region ◽  
The Difference ◽  
The Waves

Исследованы данные температуры области мезопаузы, полученные за период 2013-2018 гг. на станции Маймага (63.04N, 129.51E) и за период 2015-2018 гг. на станции Тикси (71.58 N, 128.77 E). В зимний период сезона наблюдений 2014-2015 характеристика активности внутренних гравитационных волн (ВГВ) gwимеет более низкие значения, чем в другие сезоны, а средненочная температура, наоборот, превышает аналогичные значения в другие сезоны. Для сопоставления рассматривались спутниковые данные температурных профилей полученные EOS MLS (Aura). После выделения и вычитания вклада гравитационной составляющей из температурных профилей EOS MLS для области над станцией Маймага заметно отличие в зимней стратопаузе сезона 2014-2015. В этот сезон в зимний период, с учетом вычета вклада флуктуаций температуры обусловленных ВГВ, наблюдается отсутствие резких потеплений в районе стратопаузы в отличие от остальных сезонов. Измерение параметров планетарных волн в течение периода 2015-2018 гг. совместных наблюдений на станциях Маймага и Тикси показали, что фазы наблюдаемых на обеих станциях волн совпадают, а амплитуды на станции Тикси несколько (12 К) превышают амплитуды на станции Маймага. The temperature data of the mesopause region obtained for the period 2013-2018 at the station Maimaga (63.04 N, 129.51 E) and for the period 2015-2018 at the station Tiksi (71.58 N, 128.77 E) was investigated. During the winter period of the 20142015 observation season, the characteristic of the internal gravity waves (IGW) activity sgw has lower values than in other seasons, and the average night temperature of the mesopause region, on the contrary, exceeds corresponding values in other seasons. For comparison, satellite data of temperature profiles obtained by EOS MLS (Aura) are given. After isolating and subtracting the contribution of the gravitaty waves from the EOS MLS temperature profiles for the region above the st. Maimaga, the difference in the winter stratopause of the 2014-2015 season is noticeable. In this season in winter there is a lack of sharp warming in the stratopause region, in contrast to other seasons, taking into account the deduction of the contribution of temperature fluctuations due to IGW. Measurement of the parameters of planetary waves during the period 2015-2018 of joint observations at Maimaga and Tiksi stations showed that the phases of the waves observed at both stations coincide, and the amplitudes at Tiksi station are several (1-2 K) higher than the amplitudes at Maimaga station.

Gravity waves measurement and analysis based on a Rayleigh Doppler lidar

2018 ◽  
Vol 47 (9) ◽  
pp. 930002
Author(s):  
陈 冲 Chen Chong ◽  
孙东松 Sun Dongsong ◽  
陈廷娣 Chen Tingdi ◽  
韩於利 Han Yuli ◽  
赵若灿 Zhao Ruocan ◽  
...  
Keyword(s):  
Gravity Waves ◽  
Doppler Lidar ◽  
Measurement And Analysis

scholarly journals Sodium fluorescence Doppler lidar to measure atmospheric temperature in the mesopause region

2011 ◽  
Vol 56 (4-5) ◽  
pp. 417-423 ◽  
Author(s):  
Xiong Hu ◽  
ZhaoAi Yan ◽  
ShangYong Guo ◽  
YongQiang Cheng ◽  
JianCun Gong
Keyword(s):  
Atmospheric Temperature ◽  
Doppler Lidar ◽  
Mesopause Region
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