Zecha, M.; Röttger, J.; Singer, W.; Hoffmann, P.; Keuer, D.: Scattering properties of PMSE irregularities and refinement of velocity estimates. Journal of Atmospheric and Terrestrial Physics 63, pp. 201 - 214 (2001)
Luce, H.; Röttger, J.; Crochet, M.; Yamamoto, M.; Fukao, S.: The scattering layer thickness and position estimatet by radar frequency domain interferometry; Part II: Effects of the scattering layer and radar beam tilts. Radio Science 35, pp. 1109 - 1127 (2000)
Luce, H.; Röttger, J.; Yamamoto, M.; Fukao, S.: The scattering layer thickness and position estimatet by radar frequency domain interferometry; Part I: Effects of the limited horizontal extent and advection of the scattering layers. Radio Science 35, pp. 119 - 131 (2000)
Röttger, J.: Radar investigations of the mesosphere, stratosphere and the troposphere in Svalbard. Adv. Polar Upper Atmos. Res. 14, pp. 202 - 220 (2000)
Brandolini, A.; Balsley, B. B.; Mabres, A.; Woodman, R. F.; Capsoni, C.; D'Amico, M.; Ecklund, W. L.; Hagfors, T.; Harper, R.; Heron, M. L.et al.; Hocking, W. K.; Lehtinen, M. S.; Röttger, J.; Sarango, M. F.; Sato, T.; Strauch, R. J.; Vaughn, J. M.; Wyatt, L. R.; Zrnic, D. S.: Report from the I}nternational {W}orkshop on {R}emote {S}ensing in {G}eophysics {U}sing {D}oppler {Techniques. Bull. Amer. Meteor. Soc. 79 (4), pp. 643 - 656 (1998)
Pan, C. J.; Liu, C. H.; Röttger, J.; Su, S. Y.; Liu, J. Y.: E region observations over Chung-Li during the SEEK campaign. Geophysical Research Letters 25, pp. 1805 - 1808 (1998)
Cho, Y. N.; Röttger, J.: An updated review of polar mesosphere summer echoes: Observations, theory, and their relationship to noctilucent clouds and subvisible aerosols. Journal Geophysical Research 102, pp. 2001 - 2020 (1997)
Hocking, W. K.; Röttger, J.: Studies of polar mesosphere summer echoes over EISCAT using calibrated signal strengths and statistical parameters. Radio Science 32, pp. 1425 - 1444 (1997)
Wannberg, G.; Wolf, I.; Vanhainen, L. G.; Koskenniemi, K.; Röttger, J.; Postila, M.; Markannen, J.; Jacobsen, R.; Stenberg, A.; Larsen, R.et al.; Eliassen, S.; Heck, S.; Huuskonen, A.: The EISCAT Svalbard Radar: A case study in modern incoherent scatter radar system design. Radio Science 32, pp. 2283 - 2307 (1997)
Röttger, J.; Hocking, W. K.: Preface in special issue: Ionosphere-Middle and Lower Atmosphere Interactions. Journal of Atmospheric and Terrestrial Physics 58, pp. 641 - 643 (1996)
Röttger, J.; Hocking, W. K.: Ionosphere-Middle and Lower Atmospheric Interactions. Journal of Atmospheric and Terrestrial Physics 58, pp. 641 - 643 (1996)
Alcala, C. M.; Röttger, J.; Kelley, M. C.: Spatial interferometry measurements of polar mesosphere summer echoes with the EISCAT VHF radar. Radio Science 30, pp. 1205 - 1218 (1995)
Bremer, J.; Singer, W.; Keuer, D.; Hoffmann, P.; Röttger, J.; Cho, J. Y. N.; Swartz, W. E.: Observations of polar mesosphere summer echoes at EISCAT during summer 1991. Radio Science 30, pp. 1219 - 1228 (1995)
Huang, C. M.; Kudeki, E.; Franke, S. J.; Liu, C. H.; Röttger, J.: Brightness distribution of midlatitude E region echoes detected at the Chung-Li VHF radar. Journal Geophysical Research 100, pp. 14703 - 14715 (1995)
Röttger, J.; Liu, C. H.; Pan, C. J.; Su, S. Y.: Characteristics of lightning echoes observed with VHF ST radar. Radio Science 30, pp. 1085 - 1097 (1995)
The European Space Agency (ESA) has given the green light to build the flight models of the spacecraft and science payload for the PLATO mission to search for extrasolar planets.
In the "Solar and Stellar Interiors" department, Laurent Gizon, Jesper Schou, Aaron Birch, Robert Cameron and others offer PhD projects in solar physics and astrophysics. Helioseismology and asteroseismology are used as important tools to study the oscillating Sun and stars.
The longest-serving solar observatory in space has turned 25 and is still making significant contributions to solar research. Its old age has become an important merit.