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stratosphere

4 maps from the paper displaying data.
Posted inEditors' Highlights

Modeling Stratospheric Impacts on North American Extreme Events

by William J. Randel 26 September 202326 September 2023

A new study quantifies the tropospheric and surface impacts of extreme stratospheric wave events and evaluates their representation in state-of-the-art climate models.

Graph from the paper
Posted inEditors' Highlights

Quantifying Extreme Events from Short Weather Forecast Data

by Sarah Kang 13 April 202310 April 2023

Subseasonal weather forecast ensembles are a useful tool for overcoming the inherent difficulty of quantifying extreme weather risk caused by data scarcity.

A dark image of a wildfire under hazy skies.
Posted inNews

Wildfire Smoke Destroys Ozone

by Elise Cutts 12 April 202312 April 2023

Smoke aerosols from large wildfires are the perfect reaction surface for chlorine chemicals, speeding their transformation from ozone-friendly forms to reactive ones.

Un rayo aparece en medio de nubes de cenizas y vapor que están saliendo de volcán a la atmósfera sobre el océano.
Posted inResearch Spotlights

Monitoreando el agua en la columna eruptiva masiva del volcán de Tonga

Sarah Stanley, Science Writer by Sarah Stanley 15 November 202230 November 2022

La reciente erupción del volcán Hunga Tonga-Hunga Ha’apai arrojó aerosoles de sulfatos y una cantidad nunca antes vista de vapor de agua a la estratosfera.

A lightning bolt appears amid clouds of ash and steam that are billowing from a volcano high into the atmosphere over the ocean.
Posted inResearch Spotlights

Tracking Water in the Tongan Volcano’s Massive Eruption Plume

Sarah Stanley, Science Writer by Sarah Stanley 24 October 202230 November 2022

The recent eruption of the Hunga Tonga–Hunga Ha‘apai volcano blasted sulfate aerosols and a record-breaking amount of water vapor into the stratosphere.

Diagrams showing simulated near-surface temperature changes.
Posted inEditors' Highlights

Modeling Stratosphere-Troposphere Coupling in a Changing Climate

by William J. Randel and Gang Chen 18 October 202214 October 2022

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.

Image showing composite polar vortex structure for disturbed conditions.
Posted inEditors' Highlights

Simulating Surface Impacts of Stratospheric Sudden Warmings

by William J. Randel 10 June 202221 December 2022

New evaluations of climate model simulations show how the stratosphere polar vortex couples to surface weather.

A photograph from a commercial flight showing a pyrocumulonimbus cloud forming over the 2019–2020 Australian bushfires.
Posted inNews

Australian Wildfires Linked to Ozone Layer Depletion

by Krystal Vasquez 4 April 20226 April 2022

New research shows that the Black Summer bushfires damaged the ozone layer, eliminating a decade’s worth of progress.

Trends in stratospheric fluorine species during the period 2004-2018.
Posted inEditors' Highlights

New Insights on Stratospheric Circulation from Fluorine Tracers

by William J. Randel 23 November 20218 June 2022

Stratospheric fluorine species have accumulated faster in the Northern Hemisphere over the past two decades reflecting interhemispheric differences in the Brewer-Dobson transport circulation.

The moon appears at the top of the layers of atmosphere above the dark Earth. The orange-red glow is Earth’s troposphere, and the brown transitional layer is the tropopause.
Posted inResearch Spotlights

Convective Transport Explains “Missing” Ice near the Tropical Tropopause

by David Shultz 10 May 202129 March 2022

Spaceborne lidar shows that more ice than expected is leaving the tropical tropopause layer in the atmosphere.

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