Global UltraViolet Imager

GUVI Biblio


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Found 2 entries in the Bibliography.

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A Globally Averaged Thermospheric Density Data Set Derived From Two-Line Orbital Element Sets and Special Perturbations State Vectors

We describe a long-term data set of global average thermospheric mass density derived from orbit data on ∼7,700 objects in low Earth orbit, via the effect of atmospheric drag. The data cover the years 1967–2019 and altitudes 250–575 km, and the temporal resolution is 3–4 days for most years. The data set is an extension and revision of a previous version. The most important change is the use of more precise orbit data: special perturbation state vectors are now used starting in 2001, instead of mean Keplerian orbital ...

Emmert, J.; Dhadly, M.; Segerman, A.;

Published by: Journal of Geophysical Research: Space Physics      Published on:

YEAR: 2021     DOI: 10.1029/2021JA029455

orbital elements; spacecraft drag; thermosphere density


Local scale structures in Earth s thermospheric winds and their consequences for wind driven transport

In the traditional picture of Earth’s upper thermosphere (∼190-300 km), it is widely presumed that its convective stability and enormous kinematic viscosity attenuate wind gradients, and hence smooth out any structure present in the wind over scale size of several hundreds of kilometers. However, several independent experimental studies have shown that observed upper thermospheric wind fields at high latitudes contain stronger than expected local-scale spatial structures. The motivation of this dissertation is to investi ...

Dhadly, Manbharat;

Published by:       Published on:

YEAR: 2015     DOI: