Liying Qian | High Altitude Observatory

Investigation of the Post-Sunset Extra Electron Density Peak Poleward of the Equatorial Ionization Anomaly Southern Crest

Latitude-longitude distribution and NmF2 simulation

The effects of IMF By on the middle thermosphere during a geomagnetically “quiet” period at solar minimum

The polar view of the percentage difference of simulated ∑O/N2 and GOLD observed ∑O/N2 between DOY 111 and 110 at 15:10 UT in 2019. The perimeter latitude is 30°N

NASA Features Research by HAO Scientist Xuguang Cai

Data from NASA’s Global-scale Observations of the Limb and Disk, or GOLD, mission reveals the twin bands of charged particles that persist near the equator at night

Responses of the Thermosphere and Ionosphere System to Concurrent Solar Flares and Geomagnetic Storms

The simulated vertical E x B drift velocity (Wi), and the changes of the vertical drift velocity due to the flares, at 300 km and12:00 LT (September 6th – September 11th, 2017)

Comparison of GOLD nighttime measurements with total electron content: preliminary results

The comparison between the GOLD map and TEC2 map on DOY 72 in 2019 23:10-23:40 (top) and 23:55-24:25 (bottom)

The 2‐D Evolution of Thermospheric ∑O/N2 Response to Weak Geomagnetic Activity During Solar‐Minimum Observed by GOLD

(top) The Kp and Dst index of three cases (DOY 145 to 148; DOY 153 to 156; DOY 162 to 165); (middle) latitude-longitude distribution of ∑O/N2 percentage difference between two quiet days in three cases; (bottom) percentage difference of ∑O/N2 between disturbed and quiet days in three cases. Corresponding local time is marked on longitude interval

Observation of Postsunset OI 135.6 nm radiance Enhancement in South America by the Global-scale Observation of Limb and Disk (GOLD) Mission

The latitude-longitude distribution of the OI 135.6 nm radiance measured by GOLD Channel B from 22:25 to 23:55 UT (22:25, 22:55, 23:10, 23:25, 23:40 and 23:55) on Nov 19, 2018

Investigation of a neutral ‘tongue’ observed by GOLD during the geomagnetic storm on May 11,2019

Latitude-longitude distribution of percentage difference (Diff %) of GOLD observed ∑O/N2 between DOY 131 and 128 from 6:10 UT to 22:40 UT with 2-hour intervals

Variations in thermosphere composition and ionosphere total electron content under ‘geomagnetically quiet’ conditions at solar-minimum

a) AE index and b) Kp and Dst between DOY 109 and 112

Geospace response to an extreme solar flare

Solar flare effects on magnetospheric convection and ionospheric potential

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