Seasonal and interannual variability of gravity wave activity revealed by long-term lidar observations over Mauna Loa Observatory, Hawaii

2010 ◽  
Vol 115 (D13) ◽  
Author(s):  
Tao Li ◽  
Thierry Leblanc ◽  
I. Stuart McDermid ◽  
Dong L. Wu ◽  
Xiankang Dou ◽  
...  
Keyword(s):  
Interannual Variability ◽  
Gravity Wave ◽  
Wave Activity ◽  
Mauna Loa ◽  
Seasonal And Interannual Variability ◽  
Lidar Observations

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

scholarly journals Rayleigh/Raman lidar observations of gravity wave activity from 15 to 70 km altitude over Syowa (69°S, 40°E), the Antarctic

2017 ◽  
Vol 122 (15) ◽  
pp. 7869-7880 ◽  
Author(s):  
Masaru Kogure ◽  
Takuji Nakamura ◽  
Mitsumu K. Ejiri ◽  
Takanori Nishiyama ◽  
Yoshihiro Tomikawa ◽  
...  
Keyword(s):  
Gravity Wave ◽  
Wave Activity ◽  
Raman Lidar ◽  
The Antarctic ◽  
Lidar Observations

scholarly journals Long-term lidar observations of wintertime gravity wave activity over northern Sweden

2014 ◽  
Vol 32 (11) ◽  
pp. 1395-1405 ◽  
Author(s):  
B. Ehard ◽  
P. Achtert ◽  
J. Gumbel
Keyword(s):  
Gravity Wave ◽  
Gravity Waves ◽  
Wave Activity ◽  
Mountain Range ◽  
Northern Sweden ◽  
Mean Values ◽  
Small Dissipation ◽  
Lidar Measurements ◽  
Orographic Forcing

Abstract. This paper presents an analysis of gravity wave activity over northern Sweden as deduced from 18 years of wintertime lidar measurements at Esrange (68° N, 21° E). Gravity wave potential energy density (GWPED) was used to characterize the strength of gravity waves in the altitude regions 30–40 km and 40–50 km. The obtained values exceed previous observations reported in the literature. This is suggested to be due to Esrange's location downwind of the Scandinavian mountain range and due to differences in the various methods that are currently used to retrieve gravity wave parameters. The analysis method restricted the identification of the dominating vertical wavelengths to a range from 2 to 13 km. No preference was found for any wavelength in this window. Monthly mean values of GWPED show that most of the gravity waves' energy dissipates well below the stratopause and that higher altitude regions show only small dissipation rates of GWPED. Our analysis does not reproduce the previously reported negative trend in gravity wave activity over Esrange. The observed inter-annual variability of GWPED is connected to the occurrence of stratospheric warmings with generally lower wintertime mean GWPED during years with major stratospheric warmings. A bimodal GWPED occurrence frequency indicates that gravity wave activity at Esrange is affected by both ubiquitous wave sources and orographic forcing.

scholarly journals Variability of ice conditions of the Bering sea and assessment of the possibility of their modelling

2019 ◽  
Vol 59 (6) ◽  
pp. 920-927
Author(s):  
V. V. Plotnikov ◽  
N. M. Vakulskaya ◽  
V. A. Dubina
Keyword(s):  
Sea Ice ◽  
Interannual Variability ◽  
Bering Sea ◽  
Ice Cover ◽  
Practical Application ◽  
Seasonal And Interannual Variability ◽  
Proposed Model ◽  
Ice Conditions ◽  
The Bering Sea

Various aspects of seasonal and interannual variability of the sea ice cover are estimated on the basis of all available the Bering Sea ice data from 1960 to 2017. The possibility of long-term and superlong-term modeling of the ice cover is investigated. Results of tests are given, and a conclusion about prospects of the proposed model and an opportunity of its practical application is done.

Lidar observations of gravity wave activity and spectra in the mesopause region at Wuhan, China

1999 ◽  
Vol 42 (2) ◽  
pp. 192-197
Author(s):  
Yong Ai ◽  
Shu Lu ◽  
Xunjie Zhang ◽  
Shunsheng Gong
Keyword(s):  
Gravity Wave ◽  
Wave Activity ◽  
Mesopause Region ◽  
Lidar Observations
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