Results 31 to 40 of about 7,657 (248)

A comprehensive observational filter for satellite infrared limb sounding of gravity waves [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
This paper describes a comprehensive observational filter for satellite infrared limb sounding of gravity waves. The filter considers instrument visibility and observation geometry with a high level of accuracy.
Q. T. Trinh   +6 more
doaj   +1 more source

Limited angle tomography of mesoscale gravity waves by the infrared limb-sounder GLORIA [PDF]

open access: yesAtmospheric Measurement Techniques, 2018
Three-dimensional measurements of gravity waves are required in order to quantify their direction-resolved momentum fluxes and obtain a better understanding of their propagation characteristics.
I. Krisch   +4 more
doaj   +1 more source

Satellite observations of middle atmosphere–thermosphere vertical coupling by gravity waves [PDF]

open access: yesAnnales Geophysicae, 2018
Atmospheric gravity waves (GWs) are essential for the dynamics of the middle atmosphere. Recent studies have shown that these waves are also important for the thermosphere/ionosphere (T/I) system. Via vertical coupling, GWs can significantly influence
Q. T. Trinh   +4 more
doaj   +1 more source

Stratospheric water vapour and ozone response to the quasi-biennial oscillation disruptions in 2016 and 2020 [PDF]

open access: yesAtmospheric Chemistry and Physics, 2022
The quasi-biennial oscillation (QBO) is a major mode of climate variability in the tropical stratosphere with quasi-periodically descending westerly and easterly winds, modulating transport and distributions of key greenhouse gases such as water vapour ...
M. A. Diallo   +10 more
doaj   +1 more source

Tracking the Stratosphere‐to‐Surface Impact of Sudden Stratospheric Warmings [PDF]

open access: yesJournal of Geophysical Research: Atmospheres, 2021
AbstractSudden stratospheric warming (SSW) events are extreme atmospheric regimes which can have a signature in surface weather up to 40 days after event onset in the stratosphere. SSWs can be classified as either vortex splitting or vortex displacement events, with the nature and timing of the surface impact potentially being different between the two.
Richard J. Hall   +3 more
openaire   +3 more sources

Tropical Cyclones Reduce Ozone in the Tropopause Region Over the Western Pacific: An Analysis of 18 Years Ozonesonde Profiles

open access: yesEarth's Future, 2021
Typhoons play a key role in causing low ozone concentrations in the upper troposphere and lower stratosphere (UTLS) over the western Pacific. In this study, 18 years records (2000–2017) of balloon‐borne ozone measurements in Hong Kong (22.3°N, 114.2°E ...
Dan Li   +5 more
doaj   +1 more source

Quantifying pollution transport from the Asian monsoon anticyclone into the lower stratosphere [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
Pollution transport from the surface to the stratosphere within the Asian monsoon circulation may cause harmful effects on stratospheric chemistry and climate.
F. Ploeger   +3 more
doaj   +1 more source

El Niño Southern Oscillation influence on the Asian summer monsoon anticyclone [PDF]

open access: yesAtmospheric Chemistry and Physics, 2018
We analyse the influence of the El Niño Southern Oscillation (ENSO) on the atmospheric circulation and the mean ozone distribution in the tropical and subtropical UTLS region.
X. Yan   +9 more
doaj   +1 more source

Superposition of gravity waves with different propagation characteristics observed by airborne and space-borne infrared sounders [PDF]

open access: yesAtmospheric Chemistry and Physics, 2020
Many gravity wave analyses, based on either observations or model simulations, assume the presence of only a single dominant wave. This paper shows that there are much more complex cases with gravity waves from multiple sources crossing each others ...
I. Krisch   +9 more
doaj   +1 more source

How stratospheric are deep stratospheric intrusions? LUAMI 2008 [PDF]

open access: yesAtmospheric Chemistry and Physics, 2016
Abstract. A large-scale comparison of water-vapour vertical-sounding instruments took place over central Europe on 17 October 2008, during a rather homogeneous deep stratospheric intrusion event (LUAMI, Lindenberg Upper-Air Methods Intercomparison). The measurements were carried out at four observational sites: Payerne (Switzerland), Bilthoven (the ...
T. Trickl   +16 more
openaire   +6 more sources

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