HAO

NCAR High Altitude Observatory

Editor in Chief of Open Astronomy, a flagship for open publishing

In late February 2017, Senior Scientist Philip Judge was contacted by Ewa Chmielewska, Managing Editor at De Gruyter Open, a scientific publisher of its own and third-party journals. To his great surprise, Ewa invited Philip to become Editor-In-Chief of the online journal Open Astronomy.

Thermospheric recovery during the 5 April 2010 geomagnetic storm

TIMED trajectory from SABER measurements (left column) and TIEGCM simulations
Monday, June 12, 2017

Thermospheric temperature and density recovery during the 5 April 2010 geomagnetic storm has been investigated in this study.

Impact of the lower thermospheric winter-to-summer residual circulation on thermospheric composition

TIE-GCM simulated effects
Monday, June 12, 2017

Plain Language Summary or Abstract: Gravity wave forcing near the mesopause drives a summer-to-winter residual circulation in the mesosphere and a reversed, lower thermospheric winter-to-summer residual circulation.

Deciphering Solar Magnetic Activity: Spotting Solar Cycle 25

Comparing the evolution of the daily hemispheric sunspot number and a data-inspired representation of activity band polarity and migration image
Friday, June 9, 2017

We present observational signatures of solar cycle 25 onset. Those signatures are visibly following a migratory path from high to low latitudes.

Ionospheric Climatology during Solar Minimum

median hmF2 comparison
Monday, June 5, 2017

In order to calculate the Earth’s whole atmosphere and ionosphere coupled system in a self-consistent way, new ionosphere and electrodynamo modules have been implemented in the thermosphere and ionosphere eXtension of WACCM-X. WACCX-X stands for the Whole Atmosphere Community Climate Model.

Grand Challenge Research on Subauroral Polarization Streams

Joule heating of the ionosphere simulated by the NCAR TIE-GCM

A team from the NCAR High Altitude Observatory, Johns Hopkins University, and Rice University, led by HAO scientist Wenbin Wang, was awarded a prestigious NASA Heliophysics Grand Challenge Research Grant to study the magnetosphere-ionosphere interaction known as subauroral polarization streams.

Variability and predictability of the space environment as related to lower atmosphere forcing

Monthly mean, globally integrated total gravity wave flux of energy
Wednesday, May 31, 2017

Most of the large events affecting the thermosphere and ionosphere part of the space environment come from the Sun, the solar wind, and Earth’s magnetosphere.

Global temperature change

Global temperature change
Wednesday, May 31, 2017

The NCAR Whole Atmosphere Community Climate Model–eXtended (WACCM-X) was used to study global temperature change throughout the atmosphere during the last several decades.

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