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Christoph Jacobi
Researcher at Leipzig University
Publications - 144
Citations - 2385
Christoph Jacobi is an academic researcher from Leipzig University. The author has contributed to research in topics: Thermosphere & Mesosphere. The author has an hindex of 25, co-authored 140 publications receiving 1838 citations.
Papers
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A global climatology of ionospheric irregularities derived from GPS radio occultation
TL;DR: In this paper, the amplitude variations of the GPS radio occultation signals are used to derive global information on small-scale ionospheric irregularities such as sporadic E layers between January 2002 and December 2007.
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Emerging pattern of global change in the upper atmosphere and ionosphere
Jan Laštovička,R. A. Akmaev,Gufran Beig,J. Bremer,J. T. Emmert,Christoph Jacobi,Martin J. Jarvis,G. Nedoluha,Yu.I. Portnyagin,Thomas Ulich +9 more
TL;DR: In this article, a pattern of the observed long-term global change in the upper atmosphere, based on trend studies of various parameters, was constructed for the first time, showing that anthropogenic emissions of greenhouse gases are affecting the atmosphere at nearly all altitudes between ground and space.
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Semidiurnal tidal signature in sporadic E occurrence rates derived from GPS radio occultation measurements at higher midlatitudes
TL;DR: In this article, the diurnal variation of sporadic E layer occurrence frequency in 2006 and 2007 was analyzed using GPS (Global Positioning System) Radio occultation (RO) measurements from CHAMP, GRACE and FORMOSAT-3/COSMIC satellites at Northern Hemisphere midlatitides (50°-55° N) to obtain the diurn variation of sporadically E layer frequency.
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Global and Seasonal Variations of Stratospheric Gravity Wave Activity Deduced from the CHAMP/GPS Satellite
TL;DR: In this paper, the authors used radio occultation data from the Challenging Minisatellite Payload (CHAMP) satellite to analyze gravity wave (GW) activity in the stratosphere.
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Comparison of Mesospheric Winds From a High-Altitude Meteorological Analysis System and Meteor Radar Observations During the Boreal Winters of 2009-2010 and 2012-2013
John P. McCormack,Karl W. Hoppel,David D. Kuhl,R. J. de Wit,Gunter Stober,Patrick J. Espy,Nancy L. Baker,Peter Brown,D. C. Fritts,Christoph Jacobi,Diego Janches,Nicholas J. Mitchell,Benjamin Ruston,Steven D. Swadley,K. Viner,T. Whitcomb,Robert Hibbins +16 more
TL;DR: In this paper, a study of horizontal winds in the mesosphere and lower thermosphere (MLT) during the boreal winters of 2009-2010 and 2012-2013 produced with a new high-altitude numerical weather prediction (NWP) system is presented.