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mesosphere

Graphs from the paper.
Posted inEditors' Highlights

Wind Shear Instabilities Emit Gravity Waves

by Yuichi Otsuka 27 April 202327 April 2023

A new study shows that atmospheric gravity waves can be generated by the Kelvin-Helmholtz instabilities in the wind shear layer.

Two figures from the paper, showing the orbit path of Ice in the Mesosphere and graph showing the agreement of the daily PMC occurrence rates of the simultaneous observations from Himawari-8/AHI and AIM/Cloud Imaging and Particle Size data..
Posted inEditors' Highlights

New Technique Improves Polar Mesospheric Cloud Data Set

by Astrid Maute 7 April 202213 March 2023

A new two-step Polar Mesospheric Cloud detection technique is applied towards the Himawari-8/Advanced Himawari Imager full-disk images leading to a new high-quality dataset.

The heat surface of El Niño in 2015 looks like El Niño in 1997.
Posted inResearch Spotlights

Explaining Thermal Tides in the Upper Atmosphere During the 2015 El Niño

by David Shultz 26 August 202116 March 2023

Increased tropospheric heating and reduced dissipation combine to explain an anomalously large thermal tide.

Image of dune aurora taken by a citizen scientist
Posted inEditors' Highlights

Dune Aurora Explained by Satellite-Ground Studies

by M. Hudson 4 May 202116 March 2023

Spacecraft observations support the mechanism for explaining auroral dunes observed from the ground by citizen scientists.

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 view of Earth’s thin atmosphere from the International Space Station.
Posted inAGU News

Paying Attention to the “Ignorosphere”

Heather Goss, AGU Publisher by Heather Goss 22 April 202116 March 2023

Scientists discuss geospace and what we could learn if we put some more eyes on this region in the atmosphere. Read more in our special themed issue.

A small plastic disk levitates above an LED array in a vacuum chamber.
Posted inNews

Flying Saucers Could One Day Probe the Mesosphere

Damond Benningfield, Science Writer by Damond Benningfield 25 March 20212 September 2022

Researchers have created thin, levitating disks that could be used to study the mesosphere, a layer of Earth’s atmosphere that’s difficult to reach with conventional flyers.

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

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 23 March 202118 October 2022

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

A girl pointing at the night sky
Posted inNews

Auroral “Dunes” Light Up Earth’s Atmosphere

Katherine Kornei, Science Writer by Katherine Kornei 5 March 202116 March 2023

The auroral feature, first spotted by amateur astronomers in 2015, likely traces high-altitude atmospheric waves.

The setting Sun illuminates the layers of Earth’s atmosphere in this view from the International Space Station.
Posted inOpinions

An Observational Gap at the Edge of Space

by M. G. Mlynczak, J. Yue, J. McCormack, R. S. Liebermann and N. J. Livesey 5 March 202116 March 2023

Ongoing climate change in Earth’s middle and upper atmosphere will affect the rapidly expanding space and telecommunications sectors. Maintaining observations of this region is more crucial than ever.

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