An update to the Horizontal Wind Model (HWM): The quiet time thermosphere

DP Drob, JT Emmert, JW Meriwether… - Earth and Space …, 2015 - Wiley Online Library
The Horizontal Wind Model (HWM) has been updated in the thermosphere with new
observations and formulation changes. These new data are ground‐based 630 nm Fabry …

Neutral winds from mesosphere to thermosphere—past, present, and future outlook

M Dhadly, F Sassi, J Emmert, D Drob… - Frontiers in Astronomy …, 2023 - frontiersin.org
The Earth's upper atmosphere (85–550 km) is the nearest region of geospace and is highly
dynamic in nature. Neutral winds impact a large portion of the dynamics in this region. They …

Studies of thermospheric dynamics with a Fabry–Perot interferometer network: A review

JW Meriwether - Journal of Atmospheric and Solar-Terrestrial Physics, 2006 - Elsevier
Advances in Fabry–Perot interferometer (FPI) technology implemented within the past
decade have been extensive achieving improvements in sensitivity by one or two orders of …

Development of optical mesosphere thermosphere imagers (OMTI)

K Shiokawa, Y Katoh, M Satoh, MK Ejiri, T Ogawa… - Earth, Planets and …, 1999 - Springer
Abstract The Optical Mesosphere Thermosphere Imagers (OMTI) have been developed to
investigate the dynamics of the upper atmosphere through nocturnal airglow emissions. The …

Spatial structure in the thermospheric horizontal wind above Poker Flat, Alaska, during solar minimum

M Conde, RW Smith - Journal of Geophysical Research: Space …, 1998 - Wiley Online Library
A new all‐sky imaging, wavelength scanning Fabry‐Perot spectrometer was used to record
high‐resolution (R≃ 200,000) spectra of the λ630 nm thermospheric optical emission above …

Characterization of the thermospheric mean winds and circulation during solstice using ICON/MIGHTI observations

E Yiğit, M Dhadly, AS Medvedev… - Journal of …, 2022 - Wiley Online Library
Using the horizontal neutral wind observations from the Michelson Interferometer for Global
High‐resolution Thermospheric Imaging (MIGHTI) instrument onboard NASA's Ionospheric …

An investigation comparing ground‐based techniques that quantify auroral electron flux and conductance

SR Kaeppler, DL Hampton, MJ Nicolls… - Journal of …, 2015 - Wiley Online Library
We present three case studies that examine optical and radar methods for specifying
precipitating auroral flux parameters and conductances. Three events were chosen …

Assimilated observations of thermospheric winds, the aurora, and ionospheric currents over Alaska

M Conde, JD Craven, T Immel, E Hoch… - Journal of …, 2001 - Wiley Online Library
We present simultaneous measurements of thermospheric winds, auroral emissions, and
ionospheric currents over Alaska, obtained from four separate instruments. Thermospheric …

Seasonal dependence of northern high‐latitude upper thermospheric winds: A quiet time climatological study based on ground‐based and space‐based …

M Dhadly, J Emmert, D Drob, M Conde… - Journal of …, 2017 - Wiley Online Library
This paper investigates the large‐scale seasonal dependence of geomagnetically quiet
time, northern high‐latitude F region thermospheric winds by combining extensive …

Seasonal dependence of geomagnetic active‐time northern high‐latitude upper thermospheric winds

MS Dhadly, JT Emmert, DP Drob… - Journal of …, 2018 - Wiley Online Library
This study is focused on improving the poorly understood seasonal dependence of northern
high‐latitude F region thermospheric winds under active geomagnetic conditions. The gaps …