H
H. Volland
Researcher at University of Bonn
Publications - 5
Citations - 293
H. Volland is an academic researcher from University of Bonn. The author has contributed to research in topics: Thermosphere & Latitude. The author has an hindex of 4, co-authored 5 publications receiving 283 citations.
Papers
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Journal ArticleDOI
Magnetic storm characteristics of the thermosphere
Hans G. Mayr,H. Volland +1 more
TL;DR: In this article, the authors considered energy and diffusive mass transport associated with the thermospheric circulation in a selfconsistent, though mathematically relatively simple form to describe in a three-dimensional two-constituent model magnetic storm characteristics in composition (N2, O, and He), temperature and mass-density.
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Theoretical model for the latitude dependence of the thermospheric annual and semiannual variations
Hans G. Mayr,H. Volland +1 more
TL;DR: In this article, a three-dimensional model for the annual and semiannual variations of the thermosphere is presented in which energy and diffusive mass transport associated with the global circulation are considered in a self-consistent form.
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Diffusion model for the phase delay between thermospheric density and temperature
Hans G. Mayr,H. Volland +1 more
TL;DR: Two-dimensional time dependent diffusion model for phase delay between thermospheric density and temperature is proposed in this paper, where phase delay is defined as the delay between temperature and density.
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Note on the semiannual effect in the thermosphere
H. Volland,Hans G. Mayr +1 more
TL;DR: In this paper, the semi-annual variation in the thermospheric density is discussed in terms of the spatial and temporal variations in the solar heat input, and it is shown that the relatively large global component in the semiannual effect of the total mass density can be explained by the lack of advective loss.
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Perturbation theory in thermosphere dynamics
Hans G. Mayr,H. Volland +1 more
TL;DR: In this paper, it was shown that density and pressure throughout the thermosphere can be adequately described in a logarithmic expansion that provides a sound basis for the application of perturbation theory.