Shaposhnikov, D. S.; Grigalashvili, M.; Medvedev, A. S.; Sonnemann, G. R.; Hartogh, P.: Analytical Approximations of the Characteristics of Nighttime Hydroxyl on Mars and Intra-Annual Variations. Solar System Research 57, pp. 1 - 13 (2023)
Kulikov, M. Y.; Belikovich, M. V.; Grygalashvyly, M.; Sonnemann, G. R.; Ermakova, T. S.; Nechaev, A. A.; Feigin, A. M.: Daytime ozone loss term in the mesopause region. Annales Geophysicae 35 (3), pp. 677 - 682 (2017)
Sonnemann, G. R.; Hartogh, P.; Berger, U.; Grygalashvyly, M.: Hydroxyl layer: trend of number density and intra-annual variability. Annales Geophysicae 33, pp. 749 - 767 (2015)
Sonnemann, G. R.; Grygalashvyly, M.: Global annual methane emission rate derived from its current atmospheric mixing ratio and estimated lifetime. Annales Geophysicae 32, pp. 277 - 283 (2014)
Sonnemann, G. R.; Hartogh, P.; Berger, U.; Lübken, F.-J.; Grygalashvyly, M.: Anthropogenic effects on the distribution of minor chemical constituents in the mesosphere/lower thermosphere - A model study. Advances in Space Research 50 (5), pp. 598 - 618 (2012)
Hartogh, P.; Jarchow, C.; Sonnemann, G. R.; Grygalashvyly, M.: Ozone distribution in the middle latitude mesosphere as derived from microwave measurements at Lindau (51.66 N, 10.13 E). Journal Geophysical Research 116, D04305 (2011)
Hartogh, P.; Sonnemann, G. R.; Grygalashvyly, M.; Jarchow, C.: Ozone trends in the mid-latitude stratopause region based on microwave measurements at Lindau (51.66° N, 10.13° E), the ozone reference model, and model calculations. Advances in Space Research 47 (11), pp. 1937 - 1948 (2011)
Sonnemann, G. R.; Hartogh, P.; Grygalashvyly, M.; Song, L.; Berger, U.: The quasi 5-day signal in the mesospheric water vapor concentration at high latitudes in 2003 - A comparison between observations at ALOMAR and calculations. Journal Geophysical Research 113, D04101 (2008)
Sonnemann, G. R.; Grygalashvyly, M.: The relationship between the occurrence rate of major stratospheric warmings and solar Lyman-alpha flux. Journal Geophysical Research 112 (D20), D20101 (2007)
Becker, E.; Grygalashvyly, M.; Sonnemann, G. R.; Hartogh, P.; Jarchow, C.: GWS mixing and effective diffusivity concept for minor chemical constituents in the MLT. 11th Annual, Meeting Asia Oceania Geosciences Society, Sapporo, Japan (2014)
Grygalashvyly, M.; Becker, E.; Sonnemann, G. R.; Hartogh, P.: Advanced model and theory of the OH* layer. 11th Annual Meeting, Asia Oceania Geosciences Society, Sapporo, Japan (2014)
Application deadline 1 October 2024. PhD projects in planetary science, solar and stellar physics, solar magnetism, heliophysics, helioseismology, asteroseismology, ...
First Light for Sunrise III: the first tests with real sunlight were successful. The balloon-borne solar observatory should be ready for launch at the end of May.
In analyzing solar observations from the 19th century, scientists are turning to amateur researchers for help. The project will allow to better understand the history of our star.
Astronomical teamwork: By combining data from Solar Orbiter and SDO, a group of researchers has unambiguously determined the magnetic field at the solar surface.
Application deadline 1 October 2023. PhD projects in planetary science, solar and stellar physics, solar magnetism, heliophysics, helioseismology, asteroseismology, ...
Philipp Löschl has co-authored an excellent publication on Solar Orbiter data which has been awarded best Solar Physics paper of 2022 (Gherardo Valori et al. 2022)