GUVI Biblio

How might the thermosphere and ionosphere react to an extreme space weather event?

This chapter explores how the thermosphere and ionosphere (T-I) might respond to extreme solar events. Three different scenarios are considered: (1) an increase in solar UV and EUV radiation for a number of days, (2) an extreme enhancement in the solar X-rays and EUV radiation associated with a flare, and (3) an extreme CME driving a geomagnetic storm. Estimating the response to the first two scenarios is reasonably well defined, and although they would certainly impact the T-I system, those impacts could potentially be miti ...

Fuller-Rowell, Tim; Emmert, John; Fedrizzi, Mariangel; Weimer, Daniel; Codrescu, Mihail; Pilinski, Marcin; Sutton, Eric; Viereck, Rodney; Raeder, Joachim; Doornbos, Eelco;

Published by:       Published on:

YEAR: 2018     DOI: 10.1016/B978-0-12-812700-1.00021-2

Vertical Thermospheric Density Profiles From EUV Solar Occultations Made by PROBA2 LYRA for Solar Cycle 24

A new data set of summed neutral N₂ and O number density profiles, spanning altitudes between 150 and 400\ km, and observed during Northern Winter from 2010 to 2016 is presented. The neutral density profiles are derived from solar occultation measurements made by the 0.1\textendash20\ nm Zr channel on the Large Yield Radiometer (LYRA) instrument on board Project for Onboard Autonomy 2 (PROBA2). The climatology derived from the vertical profiles is consistent with that predicted by the NRLMSISE-00 mode ...

Thiemann, E.; Dominique, M.; Pilinski, M.; Eparvier, F.;

Published by: Space Weather      Published on: 12/2017

YEAR: 2017     DOI: 10.1002/2017SW001719

Seasonal variability in global eddy diffusion and the effect on neutral density

We describe a method for making single-satellite estimates of the seasonal variability in global-average eddy diffusion coefficients. Eddy diffusion values as a function of time were estimated from residuals of neutral density measurements made by the Challenging Minisatellite Payload (CHAMP) and simulations made using the thermosphere-ionosphere-mesosphere electrodynamics global circulation model (TIME-GCM). The eddy diffusion coefficient results are quantitatively consistent with previous estimates based on satellite dr ...

Pilinski, M.; Crowley, G.;

Published by: Journal of Geophysical Research: Space Physics      Published on: 04/2015

YEAR: 2015     DOI: 10.1002/2015JA021084

annual; eddy diffusion; neutral density; satellite drag; seasonal variability; semiannual

Seasonal Variability in Global Eddy Diffusion and the Effect on Thermospheric Neutral Density

Pilinski, Marcin; Crowley, Geoff;

Published by:       Published on:

YEAR: 2014     DOI:

Ensemble Assimilation Using Three First-Principles Thermospheric Models as a Tool for 72-hour Density and Satellite Drag Forecasts

Hunton, Don; Pilinski, Marcin; Crowley, Geoff; Azeem, I; Fuller-Rowell, Timothy; Matsuo, Tomoko; Fedrizzi, Mariangel; Solomon, Stanley; Qian, Liying; Thayer, Jeffrey; , others;

Published by:       Published on:

YEAR: 2014     DOI:

Topside Ionospheric Sounder for CubeSats

Swenson, C; Pratt, J; Fish, CS; Winkler, C; Pilinski, M; Azeem, I; Crowley, G; Jeppesen, M; Martineau, R;

Published by:       Published on:

YEAR: 2014     DOI:

Space Weather Tools of the Trade-A Changing Mix

Kunches, Joseph; Crowley, Geoff; Pilinski, Marcin; Winkler, Clive; Fish, Chad; Hunton, Don; Reynolds, Adam; Azeem, I;

Published by:       Published on:

YEAR: 2014     DOI:

Aerodynamic Analysis Based on Challenging Minisatellite Payload Satellite Lift-to-Drag Measurements

Semi-Empirical Satellite Accommodation Model for Spherical and Randomly Tumbling Objects

Orbits of launch-vehicle upper stages and spheres were observed by U.S. Air Force Space Command, and the resulting observations were converted by the Space Analysis Office to fitted ballistic coefficients by comparing the observed orbit with an orbit predicted by an atmospheric-drag model. The ballistic coefficients contain signals that result from atmospheric variability not captured by the model as well as signals that correspond to changes in the satellite-drag coefficient. For objects in highly elliptical orbits with ...

Pilinski, Marcin; Argrow, Brian; Palo, Scott; Bowman, Bruce;

Published by: Journal of Spacecraft and Rockets      Published on: 05/2013

YEAR: 2013     DOI: 10.2514/1.A32348

The impact of helium on thermosphere mass density response to geomagnetic activity during the recent solar minimum

Thayer, J.; Liu, X.; Lei, J.; Pilinski, M.; Burns, A.;

Published by: Journal of Geophysical Research      Published on: Jan-01-2012

YEAR: 2012     DOI: 10.1029/2012JA017832

Tutorial: The Neutral Atmosphere and the Satellite Drag Environment

Crowley, Geoff; Pilinski, Marcin; Azeem, Irfan;

Published by: Advances in the Astronautical Sciences      Published on:

YEAR: 2012     DOI:

Dynamic gas-surface interaction modeling for satellite aerodynamic computations

Drag coefficients are a large source of uncertainty when predicting the aerodynamic forces on orbiting satellites. Accordingly, the focus of this research is to improve the fidelity of drag modeling by investigating the nature of gas-surface interactions in low earth orbit. The author has investigated to what extent oxygen adsorption can influence the parameters of drag coefficient models, most notably the energy accommodation coefficient.

Pilinski, Marcin;

Published by:       Published on:

YEAR: 2011     DOI:

Drag coefficients of satellites with concave geometries: comparing models and observations

AERONOMIC studies make use of satellite drag measurements in the determination of thermospheric densities, enabling scientific inquiry into processes of the upper neutral

Pilinski, Marcin; Argrow, Brian; Palo, Scott;

Published by: Journal of Spacecraft and Rockets      Published on:

YEAR: 2011     DOI: https://doi.org/10.2514/1.50915