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The Role of Gravity Wave Drag Optimization in the Splitting of the Antarctic Vortex in the 2002 Sudden Stratospheric Warming
(American Geophysical Union, 2018-07)
The impact of gravity wave drag on the Antarctic sudden stratospheric warming (SSW) in 2002 is examined through a mechanistic middle atmosphere model combined with a variational data assimilation system. Significant ...
Lidar observations of large-amplitude mountain waves in the stratosphere above Tierra del Fuego, Argentina
(Nature Research, 2020-09-03)
Large-amplitude internal gravity waves were observed using Rayleigh lidar temperature soundings above Rio Grande, Argentina (54∘S, 68∘W), in the period 16–23 June 2018. Temperature perturbations in the upper stratosphere ...
Unexpected connections between the stratosphere and ionosphere
(American Geophysical Union, 2010-05)
The coupling of the ionosphere to processes from below remains an elusive and difficult problem, as rapidly changing external drivers from above mask variations related to lower atmospheric sources. Here we use superposition ...
The 2019 southern hemisphere stratospheric polar vortex weakening and its impacts
(Amer Meteorological, 2021)
This study offers an overview of the low-frequency (i.e., monthly to seasonal) evolution, dynamics, predictability, and surface impacts of a rare Southern Hemisphere (SH) stratospheric warming that occurred in austral ...
Vertical transport in the tropo-stratosphere by intermittent turbulence: a simultation study
(American Meteorological Society, 1983)
The possibility of a slow depletion of stratospheric ozone in reactions with pollutants inadvertently released in the lower atmosphere has received considerable attention over the past decade (see e.g. Kruger ad Setlow, ...
Storyline description of Southern Hemisphere midlatitude circulation and precipitation response to greenhouse gas forcing
(Springer, 2020-05)
As evidence of climate change strengthens, knowledge of its regional implications becomes an urgent need for decision making. Current understanding of regional precipitation changes is substantially limited by our understanding ...
Stratospheric and mesospheric data assimilation: the role of middle atmospheric dynamics
(Springer, 2016)
The middle atmosphere refers to the stratosphere and mesosphere and features dynamics and circulationsthat are fundamentally different from those of the troposphere. The large-scale meridional circulations inthe middle ...
Mean winds in the tropical stratosphere and mesosphere during january 1993, march 1994, and august 1994
(American Geophysical Union, 1997-11-27)
Radar observations of winds and momentum fluxes in the stratosphere and mesosphere at the Jicamarca Radio Observatory in Peru ( JRO; 12S, 77W) were taken during three 10 day campaigns in January 1993, March 1994, and August ...
Effect of volcanic eruptions on stratospheric ozone and irradiance
(Nova Science Publishers, 2015)
Major volcanic eruptions can inject large amounts of sulfur into the stratosphere, increasing the stratospheric aerosol layer for several years. In the last decades, this effect was observed after the eruptions of El ...
A study of the effect of overshooting deep convection on the water content of the TTL and lower stratosphere from Cloud Resolving Model simulations
(2007-10-08)
Simulations of overshooting, tropical deep convection using a Cloud Resolving Model with bulk microphysics are presented in order to examine the effect on the water content of the TTL (Tropical Tropopause Layer) and lower ...