Observations

Katelynn Greer

Katelynn Greer is a scientific visitor at the High Altitude Observatory of the National Center for Atmospheric Research.

Nicholas Pedatella

Nicholas Pedatella is a Scientist I at the High Altitude Observatory of the National Center for Atmospheric Research.

Physical Processes Driving the Response of the F2-region Ionosphere to the 21 August 2017 Solar Eclipse at Millstone Hill

UT and altitude variations of electron densities
Friday, May 4, 2018

The high-resolution thermosphere-ionosphere-electrodynamics general circulation model (TIEGCM) was used to investigate the cause of F2-region electron density (Ne) responses to the Great American Solar Eclipse on 21 August 2017 at Millstone Hill (42.610N, 71.480W).

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.

GOLD Mission Launched into Orbit

SES-14 communications satellite

The NASA Global-scale Observations of the Limb and Disk (GOLD) mission was launched into orbit on January 25, 2018 as a commercially hosted payload on the SES-14 communications satellite. There were anxious moments following lift-off when mission control lost contact with the satellite.

Rosetta Stone Eclipse Campaign

(Right to left) FLIR camera, PolarCam, and Avantes flash spectra

HAO scientists observed the August 21st total eclipse with a suite of three instruments with financial assistance provided by NASA.

A TRMM/GPM retrieval of the total mean generator current for the global electric circuit

Global mean distribution of Wilson current for the GEC (1.6 kA total)
Monday, October 16, 2017

A specialized satellite version of the passive microwave electric field retrieval algorithm (Peterson et al., 2015) is applied to observations from the Tropical Rainfall Measuring Mission (TRMM) and Global Precipitation Measurement (GPM) satellites to estimate the generator current for the Global

The NASA Ionospheric Connection Explorer (ICON) Mission

Variation of NmF2 log 10 [1/cm3] for different seasons
Wednesday, April 26, 2017

The NASA Ionospheric Connection explorer (ICON) will study the coupling between the thermosphere and ionosphere at low- and mid-latitudes by measuring the key parameters.

Gravity wave variation from the troposphere to the lower thermosphere during a stratospheric sudden warming event: A case study

Vertical energy flux
Monday, April 3, 2017

High resolution Whole Atmosphere Community Climate Model (WACCM) simulations are used to study how gravity waves vary during a stratospheric sudden warming (SSW) event from the source region to the lower thermosphere.

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