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William J. Randel

Editor, JGR Atmospheres

Satellite measures of the impact of large boreal forest fires on ozone
Posted inEditors' Highlights

Satellite Measurements of Stratospheric Forest Fire Smoke

by William J. Randel 6 December 201918 November 2022

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.

Map of continental USA showing horizontal distribution of the mean of the logarithmic eddy dissipation rate in the troposphere
Posted inEditors' Highlights

Radiosondes Measure Atmospheric Turbulence Over North America

by William J. Randel 16 August 201925 July 2022

Analyses of high-resolution radiosonde balloon measurements have provided a novel climatology of atmospheric turbulence parameters in the troposphere and lower stratosphere.

Posted inEditors' Highlights

New Lidar Comparisons of Temperatures Near the Mesopause

by William J. Randel 22 October 201816 March 2023

For the first time, simultaneous measurements of upper atmosphere temperatures over altitudes 80 to 110 kilometers have been made by two complementary lidar techniques.

Posted inEditors' Highlights

New Characterization of the Mesospheric Polar Vortices

by William J. Randel 2 October 201816 March 2023

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.

Posted inEditors' Highlights

Continental Convection Reaches New Highs

by William J. Randel 12 March 201829 March 2022

Ten years of high-resolution gridded NEXRAD radar data provide a new data set to quantify tropopause-overshooting convection over the continental United States.

Posted inEditors' Highlights

New Estimates of Ozone Transport in Extratropical Cyclones

by William J. Randel 26 January 201829 March 2022

Cross-tropopause ozone transport in midlatitude cyclones, coincident with dry air intrusions, is derived from satellite and reanalysis data organized in cyclone-centric coordinates.

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