Results 31 to 40 of about 66,671 (212)

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

Atmospheric 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, S. Kalisch, P. Preusse, H.-Y. Chun, S. D. Eckermann, M. Ern, M. Riese   +6 more
doaj   +1 more source

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

Atmospheric 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, J. Ungermann, P. Preusse, E. Kretschmer, M. Riese   +4 more
doaj   +1 more source

Uncertainty in the Response of Sudden Stratospheric Warmings and Stratosphere‐Troposphere Coupling to Quadrupled CO2 Concentrations in CMIP6 Models

Journal of Geophysical Research - Atmospheres, 2020
Major sudden stratospheric warmings (SSWs), vortex formation, and final breakdown dates are key highlight points of the stratospheric polar vortex.
B. Ayarzagüena, A. Charlton-Perez, A. Butler, P. Hitchcock, I. Simpson, L. Polvani, N. Butchart, E. Gerber, L. Gray, B. Hassler, P. Lin, F. Lott, E. Manzini, R. Mizuta, C. Orbe, S. Osprey, D. Saint‐Martin, M. Sigmond, M. Taguchi, E. Volodin   +19 more
semanticscholar   +1 more source

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

Atmospheric 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, F. Ploeger, F. Ploeger, M. I. Hegglin, M. I. Hegglin, M. I. Hegglin, M. Ern, J.-U. Grooß, S. Khaykin, M. Riese, M. Riese   +10 more
doaj   +1 more source

Radiative and chemical implications of the size and composition of aerosol particles in the existing or modified global stratosphere

Atmospheric Chemistry and Physics, 2020
. The size of aerosol particles has fundamental effects on their chemistry and radiative effects. We explore those effects using aerosol size and composition data in the lowermost stratosphere along with calculations of light scattering.
D. Murphy, K. Froyd, I. Bourgeois, C. Brock, A. Kupc, J. Peischl, G. Schill, C. Thompson, C. Williamson, P. Yu   +9 more
semanticscholar   +1 more source

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

Annales 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, M. Ern, E. Doornbos, P. Preusse, M. Riese   +4 more
doaj   +1 more source

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

Journal 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, Daniel M. Mitchell, William J. M. Seviour, Corwin J. Wright   +3 more
openaire   +3 more sources

Black carbon lofts wildfire smoke high into the stratosphere to form a persistent plume

Science, 2019
Up in smoke Extensive and intense wildfires in the Pacific Northwest of the United States in 2017 injected large quantities of smoke into the stratosphere. Yu et al.
P. Yu, O. B. Toon, C. Bardeen, Yunqian Zhu, K. Rosenlof, R. Portmann, T. Thornberry, R. Gao, S. Davis, E. Wolf, J. D. de Gouw, D. Peterson, M. Fromm, A. Robock   +13 more
semanticscholar   +1 more source

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

Earth'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, Bärbel Vogel, Rolf Müller, Jianchun Bian, Gebhard Günther, Martin Riese   +5 more
doaj   +1 more source

Smoke of extreme Australian bushfires observed in the stratosphere over Punta Arenas, Chile, in January 2020: optical thickness, lidar ratios, and depolarization ratios at 355 and 532 nm

, 2020
We present particle optical properties of stratospheric smoke layers observed with multiwavelength polarization Raman lidar over Punta Arenas (53.2 S, 70.9 W), Chile, at the southernmost tip of South America in January 2020. The smoke originated from the
Kevin Ohneiser, A. Ansmann, H. Baars, P. Seifert, B. Barja, Cristofer Jiménez, M. Radenz, Audrey Teisseire, A. Floutsi, M. Haarig, R. Engelmann, F. Zamorano, J. Buehl, U. Wandinger   +13 more
semanticscholar   +1 more source