Results 21 to 30 of about 34,894 (282)

Lagrangian simulation of ice particles and resulting dehydration in the polar winter stratosphere [PDF]

open access: yesAtmospheric Chemistry and Physics, 2019
Polar stratospheric clouds (PSCs) and cold stratospheric aerosols drive heterogeneous chemistry and play a major role in polar ozone depletion. The Chemical Lagrangian Model of the Stratosphere (CLaMS) simulates the nucleation, growth, sedimentation, and
I. Tritscher   +6 more
doaj   +1 more source

3-D tomographic limb sounder retrieval techniques: irregular grids and Laplacian regularisation [PDF]

open access: yesAtmospheric Measurement Techniques, 2019
Multiple limb sounder measurements of the same atmospheric region taken from different directions can be combined in a 3-D tomographic retrieval. Mathematically, this is a computationally expensive inverse modelling problem.
L. Krasauskas   +6 more
doaj   +1 more source

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

Diagnosing the stratosphere-to-troposphere flux of ozone in a chemistry transport model [PDF]

open access: yes, 2005
[1] Events involving stratosphere-troposphere exchange (STE) of ozone, such as tropopause folds and westerly ducts, are readily identified in observations and models, but a quantitative flux specifying where and when stratospheric ozone is mixed into the
Hsu, Juno, Prather, M J, Wild, O
core   +5 more sources

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

Stratosphere-troposphere exchange: An angular momentum perspective [PDF]

open access: yes, 2007
The exchange of axial angular momentum (AM) between stratosphere and troposphere forms an important part of stratosphere–troposphere exchange (STE). Data are used to quantify the related fluxes through an idealized tropopause for specific flux events ...
Egger, Joseph   +3 more
core   +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

Effects of stratosphere-troposphere chemistry coupling on tropospheric ozone [PDF]

open access: yes, 2010
[1] A new, computationally efficient coupled stratosphere-troposphere chemistry-climate model (S/T-CCM) has been developed based on three well-documented components: a 64-level general circulation model from the UK Met Office Unified Model, the ...
Tian, W   +23 more
core   +1 more source

How stratospheric are deep stratospheric intrusions? [PDF]

open access: yesAtmospheric Chemistry and Physics, 2014
Abstract. Preliminary attempts of quantifying the stratospheric ozone contribution in the observations at the Zugspitze summit (2962 m a.s.l.) next to Garmisch-Partenkirchen in the German Alps had yielded an approximate doubling of the stratospheric fraction of the Zugspitze ozone during the time period 1978 and 2004.
T. Trickl   +5 more
openaire   +9 more sources

Downward Control from Lower Stratosphere? [PDF]

open access: yes, 2005
The concept of downward control proposes a mechanism for the impact of the stratospheric circulation on the troposphere. Momentum forcing at upper-stratospheric levels induces a meridional circulation that eventually reaches the surface.
Egger, Joseph, Hoinka, Klaus-Peter
core   +1 more source

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