Climate models have disagreed on the future evolution of the stratospheric polar vortex and links to the troposphere, but a new study revisits this problem with state-of-the-art climate models.
William J. Randel
Editor, JGR Atmospheres
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Simulating Surface Impacts of Stratospheric Sudden Warmings
New evaluations of climate model simulations show how the stratosphere polar vortex couples to surface weather.
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New Insights on Stratospheric Circulation from Fluorine Tracers
Stratospheric fluorine species have accumulated faster in the Northern Hemisphere over the past two decades reflecting interhemispheric differences in the Brewer-Dobson transport circulation.
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Measurements of Ozone-Depleting Chemicals in the Asian Monsoon
New high-altitude aircraft observations identify unexpected high levels of halogen-containing species entering the stratosphere above the summertime Asian monsoon.
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Novel Simulations of Upper Atmosphere Gravity Wave Dynamics
Gravity waves play a key role in driving upper atmosphere circulations but are poorly understood. New high-resolution simulations are resolving complex wave behaviors with unprecedented detail.
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Satellite Measurements of Stratospheric Forest Fire Smoke
Intense boreal forest fires in August 2017 caused smoke plumes that reached record levels in the stratosphere; satellite measurements show that the effects rivaled a moderate volcanic eruption.
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Radiosondes Measure Atmospheric Turbulence Over North America
Analyses of high-resolution radiosonde balloon measurements have provided a novel climatology of atmospheric turbulence parameters in the troposphere and lower stratosphere.
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New Lidar Comparisons of Temperatures Near the Mesopause
For the first time, simultaneous measurements of upper atmosphere temperatures over altitudes 80 to 110 kilometers have been made by two complementary lidar techniques.
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New Characterization of the Mesospheric Polar Vortices
Polar vortices play a central role in coupling the atmosphere from the ground to the middle atmosphere. New satellite diagnostics describe mesospheric polar vortices and coupling to lower altitudes.
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Continental Convection Reaches New Highs
Ten years of high-resolution gridded NEXRAD radar data provide a new data set to quantify tropopause-overshooting convection over the continental United States.