NCAR High Altitude Observatory

Dependence of lunar tide of the equatorial electrojet on the winter-time polar vortex, solar flux and QBO

Dependence of lunar tide image
Thursday, April 5, 2018

The lower atmospheric forcing effects on the ionosphere are particularly evident during extreme meteorological events known as sudden stratospheric warmings (SSWs).

It's a Bird, it's a Plane, no, it's HiWIND


In February, 2018, a specialized engineering team, led by principal investigator Dr. Qian Wu, traveled from Boulder, Colorado to a NASA facility in Palestine, Texas.

Ricky Egeland developed sunstardb

50-year time series of the S-index

During his thesis work at HAO, Newkirk Fellow Ricky Egeland developed a solar-stellar database called sunstardb.

WACCM Simulations of Zonal Mean Gravity Wave Drag Short-term Variability in the Southern Hemisphere Mesosphere

Gravity wave drag anomaly
Friday, March 16, 2018

Whole Atmosphere Community Climate Model (WACCM) simulations are used to investigate the short-term (30-day) temporal variability in the mid- and high-latitude Southern Hemisphere mesosphere.

Ionospheric Electron Content during Solar Cycle 23

Comparison of measured to modeled global total electron content
Tuesday, March 13, 2018

Solomon & Qian show that solar minima are not all the same, and may have implications for understanding the Sun during the extended periods of very low activity known as “grand minima” that have sometimes occurred in the past, the best known of which was the Maunder Minimum during 1650–1700.

The longitudinal variations of upper thermospheric zonal winds observed by the CHAMP satellite at low and mid-latitudes

Longitudinal structures of zonal winds
Thursday, March 1, 2018

In this work, Kedeng Zhang, Wenbin Wang and others, investigate the longitudinal patterns of thermospheric zonal winds (~400 km) and their seasonal and solar activity dependence.

Faster Traveling Atmosphere Disturbances Caused by Polar Ionosphere Turbulence Heating

Meridional wind variability
Wednesday, February 28, 2018

For the first time, a new module enables Jing Liu and others to investigate the intimate coupling between polar turbulence electron heating and thermosphere disturbances in the context of a first principle, self-consistent model.

Discovery of New Coronal Lines at 2.843 & 2.853 Microns

Summary of AIR-Spec observations during totality
Tuesday, February 20, 2018

Jenna Samra and Philip Judge identify two new emission features observed during the 21st August 2017 total solar eclipse by a novel spectrometer, AIR-Spec, flown at 14.3 km altitude aboard the NCAR Gulfstream V aircraft.


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