Thermospheric mass density: A review

JT Emmert - Advances in Space Research, 2015 - Elsevier
The mass density of Earth's thermosphere (∼ 90–600 km altitude) is a critical parameter for
low Earth orbit prediction because of the atmospheric drag on satellites in this region. In this …

Thermospheric density: An overview of temporal and spatial variations

L Qian, SC Solomon - Space science reviews, 2012 - Springer
Neutral density shows complicated temporal and spatial variations driven by external forcing
of the thermosphere/ionosphere system, internal dynamics, and thermosphere and …

Record‐low thermospheric density during the 2008 solar minimum

JT Emmert, JL Lean, JM Picone - Geophysical Research Letters, 2010 - Wiley Online Library
We use global‐average thermospheric total mass density, derived from the drag effect on
the orbits of many space objects, to study the behavior of the thermosphere during the …

Review and comparison of empirical thermospheric mass density models

C He, Y Yang, B Carter, E Kerr, S Wu, F Deleflie… - Progress in Aerospace …, 2018 - Elsevier
Atmospheric drag, as one of the largest non-gravitational perturbations in low Earth orbit
(LEO), can dramatically decay the orbit of LEO satellites with both secular and periodic …

Climatology of globally averaged thermospheric mass density

JT Emmert, JM Picone - Journal of Geophysical Research …, 2010 - Wiley Online Library
We present a climatological analysis of daily globally averaged density data, derived from
orbit data and covering the years 1967–2007, along with an empirical Global Average Mass …

Effects of solar variability on thermosphere density from CHAMP accelerometer data

J Guo, W Wan, JM Forbes, E Sutton… - Journal of …, 2007 - Wiley Online Library
Thermosphere densities near 410 km altitude inferred from accelerometer measurements on
the Challenging Minisatellite Payload (CHAMP) satellite are analyzed for solar irradiance …

Causes of low thermospheric density during the 2007–2009 solar minimum

SC Solomon, L Qian, LV Didkovsky… - Journal of …, 2011 - Wiley Online Library
Satellite drag data indicate that the thermosphere was lower in density, and therefore cooler,
during the protracted solar minimum period of 2007–2009 than at any other time in the past …

A new empirical thermospheric density model JB2008 using new solar and geomagnetic indices

B Bowman, WK Tobiska, F Marcos, C Huang… - … conference and exhibit, 2008 - arc.aiaa.org
Until development of the Jacchia-Bowman 2006 (JB2006) model1 typical density model
errors on the order of 15%-20% one standard deviation were recognized for all empirical …

New density estimates derived using accelerometers on board the CHAMP and GRACE satellites

PM Mehta, AC Walker, EK Sutton… - Space Weather, 2017 - Wiley Online Library
Atmospheric mass density estimates derived from accelerometers onboard satellites such as
CHAllenging Minisatellite Payload (CHAMP) and Gravity Recovery and Climate Experiment …

Altitude and solar activity dependence of 1967–2005 thermospheric density trends derived from orbital drag

JT Emmert - Journal of Geophysical Research: Space Physics, 2015 - Wiley Online Library
We examine 1967–2005 thermospheric mass density trends (as well as 1967–2013 trends)
derived from satellite orbit data, as a function of altitude, solar flux, and geomagnetic activity …