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clouds

A photograph of polar stratospheric clouds near Kiruna, Sweden.
Posted inEditors' Vox

New Insights into Polar Stratospheric Clouds

by Lamont R. Poole 18 October 202126 April 2022

New satellite observations of polar stratospheric clouds have advanced our understanding of how, when, and where they form, their composition, and their role in ozone depletion.

Black carbon particles are spread throughout our atmosphere, produced by the burning of fuels or industrial processes.
Posted inResearch Spotlights

How Long Do Black Carbon Particles Linger in the Atmosphere?

by Sarah Derouin 10 September 20218 March 2022

Researchers uncover how black carbon evolves from hydrophobic particles to cloud nucleation sites, eventually removing the heat-absorbing particles from the sky.

Posted inEditors' Highlights

Is Earth’s Albedo Symmetric Between the Hemispheres?

by Sarah Kang 11 August 202122 April 2022

The two hemispheres feature the same planetary albedo despite a larger land fraction in the north, because storms over the southern ocean are cloudier than their northern counterparts.

Illustration of exoplanet Kepler-1649 c orbiting its host red dwarf star
Posted inFeatures

The Forecast for Exoplanets is Cloudy but Bright

by Kate Evans 26 July 202126 April 2022

Clouds make climate modeling on Earth difficult. Identifying—and even defining—atmospheric phenomena on other planets is the next big exoplanet challenge.

View out the window of an airplane with part of a wing and cumulus clouds below visible
Posted inScience Updates

Taking Flight to Study Clouds and Climate

by A. Sorooshian, J. Atkinson, R. Ferrare, J. Hair and L. Ziemba 19 May 202126 April 2022

A new mission involving synchronized aircraft observations is collecting data vital for improving our understanding of how aerosol particles and clouds influence each other.

Outlines of Lesser Antilles islands and Barbados placed on top of satellite imagery of the Caribbean showing both white meteorological clouds and a plume of brown volcanic ash.
Posted inNews

Eyeing Explosive Ash Clouds from Above and Below

by Alka Tripathy-Lang 5 May 202126 April 2022

Satellites in the sky combined with computers on the ground detect and track volcanic ash clouds, like those produced by Soufrière St. Vincent in April, in near-real time.

Detailed image of noctilucent clouds on 21 June 2019 over Germany
Posted inNews

Noctilucent Clouds Light Up Northern Germany

by Stacy Kish 29 April 202128 April 2022

A shift in the tropopause jet may have triggered the unusual number of high-altitude clouds that briefly appeared in the early summer of 2019.

A composite picture of time-lapse images of the Super Soaker launches and resulting noctilucent cloud
Posted inNews

Rocket Mission Conjures a Ghostly Noctilucent Cloud

by Kimberly M. S. Cartier 23 March 20213 November 2021

Night-shining clouds can be diagnostic tools to better understand how human activity is changing the meteorology of the mesosphere.

Cloud droplets in turbulence (left) and cloud droplets in Earth’s atmosphere (right)
Posted inResearch Spotlights

Atmospheric Turbulence May Promote Cloud Droplet Formation

by Morgan Rehnberg 18 March 20217 March 2022

Turbulence causes local variations in relative humidity, which can push particles past a critical saturation threshold for droplet nucleation.

Aerial view of a wildfire smoke plume rising from a mountainous landscape
Posted inResearch Spotlights

Seeding Ice Clouds with Wildfire Emissions

by David Shultz 26 February 202110 January 2022

Wildfires create airborne plumes of organic and inorganic matter as they burn. These particles can nucleate cloud-forming ice crystals and affect cloud dynamics, precipitation, and climate.

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