scholarly journals Gravity wave spectra in the lower stratosphere diagnosed from project loon balloon trajectories

2017 ◽  
Vol 122 (16) ◽  
pp. 8517-8524 ◽  
Author(s):  
M. R. Schoeberl ◽  
E. Jensen ◽  
A. Podglajen ◽  
L. Coy ◽  
C. Lodha ◽  
...  
Keyword(s):  
Gravity Wave ◽  
Lower Stratosphere ◽  
Wave Spectra

Statistics of gravity wave spectra in the troposphere and lower stratosphere over Beijing

2009 ◽  
Vol 53 (1) ◽  
pp. 141-149 ◽  
Author(s):  
Wei Yuan ◽  
JiYao Xu ◽  
YongFu Wu ◽  
HongBin Chen ◽  
JianChun Bian
Keyword(s):  
Gravity Wave ◽  
Lower Stratosphere ◽  
Wave Spectra

scholarly journals Self-similar gravity wave spectra resulting from the modulation of bound waves

2018 ◽  
Vol 3 (5) ◽  
Author(s):  
Guillaume Michel ◽  
Benoît Semin ◽  
Annette Cazaubiel ◽  
Florence Haudin ◽  
Thomas Humbert ◽  
...  
Keyword(s):  
Gravity Wave ◽  
Wave Spectra ◽  
Self Similar

scholarly journals Gravity-wave effects on tracer gases and stratospheric aerosol concentrations during the 2013 ChArMEx campaign

2016 ◽  
Author(s):  
Fabrice Chane Ming ◽  
Damien Vignelles ◽  
Fabrice Jegou ◽  
Gwenael Berthet ◽  
Jean-Batiste Renard ◽  
...  
Keyword(s):  
Gravity Wave ◽  
Lower Stratosphere ◽  
Weather Forecasting ◽  
Stratospheric Aerosol ◽  
Thin Layers ◽  
Vertical Wind ◽  
Specific Humidity ◽  
Small Scale ◽  
Strong Activity ◽  
Dynamical Parameters

Abstract. Coupled balloon-borne observations of Light Optical Aerosol Counter (LOAC), M10 meteorological global positioning system (GPS) sondes, ozonesondes and GPS radio occultation data, are examined to identify gravity-wave (GW) induced fluctuations on tracer gases and on the vertical distribution of stratospheric aerosol concentrations during the 2013 ChArMEx (Chemistry-Aerosol Mediterranean Experiment) campaign. Observations reveal signatures of GWs with short vertical wavelengths less than 4 km in dynamical parameters and tracer constituents which are also correlated with the presence of thin layers of strong local enhancements of aerosol concentrations in the upper troposphere and the lower stratosphere. In particular, this is evident from a case study above Ile du Levant (43.02 °N, 6.46 °E) on 26–29 July 2013. Observations show a strong activity of dominant mesoscale inertia GWs with horizontal and vertical wavelengths of 370–510 km and 2–3 km respectively, and periods of 10–13 h propagating southward at altitudes of 13–20 km and eastward above 20 km during 27–28 July which is also captured by the European Center for Medium range Weather Forecasting (ECMWF) analyses. Ray-tracing experiments indicate the jet-front system to be the source of observed GWs. Simulated vertical profiles of dynamical parameters with large stratospheric vertical wind maximum oscillations ± 40 mms−1 are produced for the dominant mesoscale GW using the simplified linear GW theory. Parcel advection method reveals signatures of GWs in the ozone mixing ratio and the specific humidity. Simulated vertical wind perturbations of the dominant GW and small-scale perturbations of aerosol concentration (aerosol size of 0.2–0.7 μm) are in phase in the lower stratosphere. Present results support the importance of vertical wind perturbations in the GW-aerosol relation. The observed mesoscale GW induces a strong modulation of the amplitude of tracer gases and the stratospheric aerosol background.

scholarly journals Gravity Wave Behavior in Lower Stratosphere During Tropical Cyclones Over the Bay of Bengal

Radio Science ◽  
2018 ◽  
Vol 53 (11) ◽  
pp. 1356-1367 ◽  
Author(s):  
Gargi Rakshit ◽  
Soumyajyoti Jana ◽  
Animesh Maitra
Keyword(s):  
Gravity Wave ◽  
Tropical Cyclones ◽  
Bay Of Bengal ◽  
Lower Stratosphere

scholarly journals Impact of Global Warming on Gravity Wave Momentum Flux in the Lower Stratosphere

SOLA ◽  
2005 ◽  
Vol 1 ◽  
pp. 189-192 ◽  
Author(s):  
Shingo Watanabe ◽  
Tatsuya Nagashima ◽  
Seita Emori
Keyword(s):  
Global Warming ◽  
Gravity Wave ◽  
Momentum Flux ◽  
Lower Stratosphere ◽  
Wave Momentum
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