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News

2024

Vortex Strength Impacts Thermospheric Composition

April 5

Greer, Goncharenko, Harvey, & Pedatella published a paper in 2023 examining the impact of polar vortex strength on thermospheric composition and density of the ionosphere. They found that a strong vortex is associated with elevated O/N2 in the thermosphere and increased ionospheric electron density. This relationship is dependent on longitude sector an local time. See […]

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2022

New MEPED Electron Dataset

December 9, 2022

The work presented here introduces a new data set for inclusion of energetic electron precipitation (EEP) in climate model simulations and comparisons with instruments measuring electron flux. Measurements made by the medium energy proton and electron detector (MEPED) instruments onboard both the Polar Orbiting Environmental Satellites and the European Space Agency Meteorological Operational satellites are […]

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Improving ionospheric
predictability requires accurate
simulation of the mesospheric
polar vortex

December 9, 2022

The mesospheric polar vortex plays a critical role in coupling the atmosphere-ionosphere system, so its accurate simulation is imperative for robust predictions of the thermosphere and ionosphere. While the stratospheric polar vortex is widely understood and characterized, the mesospheric polar vortex is much less well-known and observed, a shortcoming that must be addressed to improve […]

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Evaluation of Polar Winter Mesopause Wind in WACCMX+DART

July 12, 2022

This work evaluates zonal winds in both hemispheres near the polar winter mesopause in the Whole Atmosphere Community Climate Model with thermosphere-ionosphere eXtension combined with data assimilation using the Data Assimilation Research Testbed (WACCMX+DART). https://doi.org/10.1029/2022JD037063

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2021

The Wave-induced Atmospheric Variability Enterprise (WAVE) was selected as a NASA Phase I DRIVE Center

July 14, 2021

Cora Randall is the WAVE Principal Investigator, and Lynn Harvey is the Project Manager.  Other WAVE Co-Investigators are at NWRA, NRL, NCAR, and NASA GSFC.  The WAVE vision is to realize the next generation of innovations in simulating spatial and temporal variability in the ionosphere, thermosphere, and mesosphere. See https://www.colorado.edu/today/2020/03/17/new-science-centers-will-explore-complex-relationship-between-earth-and-sun

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Dr. Cora Randall receives University of Colorado Distinguished Professor title!

July 13, 2021
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2019

New publication on mesospheric polar vortices

December 3, 2019
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Polar stratospheric clouds appear in the arctic

December 3, 2019
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Dr. Cora Randall receives Nicolet Lecture award

November 11, 2019
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Middle Atmosphere Group graduate student receives PhD

November 8, 2019
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Mysterious Moisture in the Mesopshere

November 8, 2019
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Noctilucent clouds at the North Pole

November 8, 2019
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2018

Student AMS award winner

August 31, 2018
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An anomalous PMC season

August 31, 2018
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2017

Mystery of the Missing Noctilucent Clouds

October 17, 2017
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Dr. Cora Randall wins leadership award

May 4, 2017
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AIM’s 10th anniversary!

May 4, 2017
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There has been quite a bit of press since Spaceweather.com and NASA reported that we observed the early season start.

January 9, 2017
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Dr. Lynn Harvey sets the record straight on the polar vortex

January 9, 2017
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2016 AGU Conference

January 9, 2017
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2016

Spaceweather.com features an article on red fringe in noctilucent clouds

August 31, 2016
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NASA’s Aeronomy of Ice in the Mesosphere (AIM) CIPS instrument update

August 31, 2016
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High Energy Particle Precipitation in the Atmosphere (HEPPA) Conference in Helsinki, Finland!

August 31, 2016
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2015

Publication featured in EOS

December 18, 2015
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Cora Randall named AAAS Fellow

December 18, 2015
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The Southern Hemisphere PMC season has begun!

December 18, 2015
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New Group Publications

July 6, 2015
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The 2015 NH polar mesospheric cloud (PMC) season is here

July 2, 2015
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2014

New Publication

December 31, 2014
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Electric-blue clouds appear over Antarctica

December 17, 2014
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NASA ScienceCast on teleconnections

April 13, 2014
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2013

AIM in the news

December 31, 2013
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New Publication

November 1, 2013
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