[straight to 2005| 2004| 2003| 2002| 2001| 2000| 1999| 1998| 1997| 1996(95)] (boldfaced name=presenter in the lists below)

Foelsche, U., A. Gobiet, A. K. Steiner, G. Kirchengast, M. Borsche, B. Pirscher, B.C. Lackner, T. Schmidt, and J. Wickert (poster): Towards Benchmark Climatologies of the Global Atmosphere with Radio Occultation Data from CHAMP, AGU Fall Meeting, San Francisco, CA, U.S.A., December 2005.

Borsche M., A. Gobiet, A.K. Steiner, U. Foelsche, G. Kirchengast, T. Schmidt, and J. Wickert (poster): Tropical Tropopause Variability from three years of CHAMP Radio Occultation Data, Summer School Cargese, Korsika, October 2005

Schwarz, M., and G. Kirchengast (oral, invited): A joint retrieval processing system for IASI sensor data: Properties, retrievel performance analysis, and future plans, 22nd ISSWG Meeting, October 2005.

Schweitzer, S., G. Kirchengast, J.M. Fritzer, M. Schwärz (poster): Simulation Study on the Performance of Temperature and Water Vapour Retrieval in the UTLS Region Based on LEO-LEO Radio Occultation Data, International School Upper Troposphere and Lower Stratosphere, COST Action 723, Corse, France, October 2005

Steiner, A.K., A. Gobiet, U. Foelsche, M. Borsche, G. Kirchengast, T. Schmidt, and J. Wickert (oral). Validation of stratospheric temperatures in ECMWF analyses with CHAMP radio occultation climatologies, 2nd GPS Radio Occultation Data User's Workshop, Lansdowne, VA, USA, August 2005.

Schwaerz M., and G. Kirchengast (oral): A joint temperature, humidity, ozone, and SST retrieval processing system for IASI sensor data: Properties and retrieval performance analysis, 14th International TOVS Study Conference, May 2005.

Foelsche, U., A. Gobiet, A.K. Steiner, G. Kirchengast, M. Borsche, J. Wickert (poster): CHAMPCLIM: Observing Climate with CHAMP Radio Occultation Data, EGU General Assembly, Vienna, Austria, April 2005.

Gobiet, A., U. Foelsche, A.K. Steiner, M. Borsche1, G. Kirchengast, J. Wickert (oral): Validation of Stratospheric Temperatures in ECMWF Analyses with CHAMP Radio Occultation Climatologies, EGU General Assembly, Vienna, Austria, April 2005.

Borsche, M., U. Foelsche, G. Kirchengast, A. Gobiet, A. Steiner, and A. Steiner (oral): Global Climate Monitoring with Radio Occultation Data: The CHAMPCLIM Project, 65. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, Graz, Austria, Februar 2005.

Gobiet, A., H. Truhetz, G. Kirchengast, B. Ahrens, A. Beck, E. Dos Santos Cardoso, B. Chimani, M. Dorninger, H. Formayer, A. Frank, T. Gorgas, M. Köstl, W. Loibl, W. Schöner, P. Seibert, and J. Züger(oral): Regional Climate Modeling in Austria: Overview of the project reclip:more and first results, 65. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, Graz, Austria, Februar 2005.

Retscher, C., C. Rehrl, and G. Kirchengast, (oral): Atmospheric Remote Sensing Applications of Stellar and Solar Occultation Techniques (GOMOS and SMAS), 65. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, Graz, Austria, Februar 2005.

Schwaerz, M., and G. Kirchengast (oral): Joint temperature, humidity, ozone, and sea surface temperature retrieval from infrared atmospheric sounding interferometer data, 65. Jahrestagung der Deutschen Geophysikalischen Gesellschaft, February 2005.

Selected Further Presentations
(at Meetings of Int´l Bodies, Universities, Public Symposia, etc.)

Foelsche, U. (invited): Klimaentwicklung und Extremereignisse, Workshop Wetterderivate, Graz, Austria, October 2005.

Foelsche, U. (invited): Klima- und Umweltkatastrophen: Lektionen aus der Erdgeschichte und Perspektiven für die Zukunft, Universitätslehrgang Krisen- und Katastrophenmanagement, Graz, Austria, September 2005.

Foelsche, U. (invited): Klimawandel und Wintersport in Österreich, Expertenhearing des Deutschen Skiverbandes zum Thema „Klimawandel und Schneesport“, Freiburg, Germany, March 2005.

Foelsche, U. (invited): Klimwandel in Österreich: Gibt es 2030 noch Pulverschneewochen im Hospiz?, Vorträge im Hotel Hospiz, St. Christoph/Arlberg, Austria, February 2005.

Foelsche, U. (invited): Globaler Klimawandel und mögliche Folgen für Österreich, Fachhochschule Technikum Kärnten, Spittal/Drau, Austria, January 2005.

Foelsche, U., A. Gobiet, A.K. Steiner, G. Kirchengast, M. Borsche, T. Schmidt, J. Wickert (oral): Climate Monitoring With CHAMP Radio Occultation Data: The CHAMPCLIM Project, AGU Fall Meeting, San Francisco, CA, U.S.A., December 2004.

Foelsche, U. (invited): Climate Monitoring Based on Occultation Data, 2nd Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-2), Graz, Austria, September 2004.

Foelsche, U., A. Gobiet, A. K. Steiner, G. Kirchengast, M. Borsche, T. Schmidt, J. Wickert (oral): Global Climatologies Based on Radio Occultation Data: The CHAMPCLIM Project, 2nd Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-2), Graz, Austria, September 2004.

Foelsche, U., G. Kirchengast, A. K. Steiner, L. Kornblueh, and E. Manzini (poster): Testing the Climate Change Monitoring Utility of GNSS Occultations by Long-Term Simulations, 2nd Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-2), Graz, Austria, September 2004.

Borsche, M., A. Gobiet, A. K. Steiner, U. Foelsche, G. Kirchengast, T. Schmidt, and J. Wickert (poster): Pre-operational Retrieval of Radio Occultation based Climatologies within the CHAMPCLIM Project, 2nd Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-2), Graz, Austria, September 2004.

Retscher, C., A. Gobiet, and G. Kirchengast (oral): Temperature and Ozone Retrieval Results from GOMOS validated with CHAMP, MIPAS, and ECMWF, 2nd Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-2), Graz, Austria, September 2004.

Schwaerz, M., and G. Kirchengast (oral): A fast channel selection method and a joint retrieval algorithm for IASI measurements including temperature, humidity, and ozone profiles and the surface skin temperature, EGU, 1st General Assembly, 2004.

Steiner, A.K., A. Löscher, and G. Kirchengast (oral): Error characteristics of refractivity profiles retriebed from CHAMP radio occultation data, 2nd Int'l Workshop on Occultations for probing Atmosphere and Climate (OPAC-2), Graz, Austria, September 2004

Retscher, C., G. Kirchengast, and A. Gobiet(oral): Temperature and Ozone Profiles from GOMOS in Comparison to CHAMP, MIPAS, Operational GOMOS Ozone and ECMWF data, 2004 ENVISAT & ERS Symposium, Salzburg, Austria, September 2004.

Gobiet, A., U. Foelsche, A.K. Steiner, M. Borsche, T. Schmidt, A. Löscher, G. Kirchengast1, and J. Wickert (oral): Radio Occultation Based Climatologies: Status of the CHAMPCLIM Project and First Results from the Summer Season 2003, Joint CHAMP/GRACE Science Meeting GFZ, Potsdam, July 2004.

Foelsche, U., G. Kirchengast, A.K. Steiner, L. Kornblueh, and E. Manzini (poster): Monitoring climate change with GNSS occultations: a 25-year (2001-2025) simulation study, 1st International CLIVAR Conference, Baltimore, MD, U.S.A, June 2004.

Steiner, A.K., U. Foelsche, G. Kirchengast, A. Gobiet, A. Löscher, J. Wickert, and T. Schmidt (poster): CHAMPCLIM: Climatologies Based on Radio Occultation Observations, 1st International CLIVAR Conference, Baltimore, MD, U.S.A, June 2004.

Kirchengast, G., U. Foelsche, A. Gobiet, and A. Löscher (oral): Generation of global atmospheric climatologies from GNSS radio occultation data, 9th Int'l Meeting on Statistical Climatology, Cape Town, South Africa, May 2004.

Foelsche, U., G. Kirchengast, A.K. Steiner, L. Kornblueh, and E. Manzini (oral): Monitoring climate with small constellations of GNSS Receivers: A Simulation Study, ROCSAT3/COSMIC Radio Occultation Science Workshop (II), LungTan, Taiwan, May 2004.

Retscher, C., G. Kirchengast, and A. Hauchecorne (oral): Stratospheric Temperature Sounding by Exploitation of Bending Angles of the Envisat/GOMOS Occultation Sensor, EGU, 1st General Assembly, Nice, France, April 2004.

Steiner, A.K., A. Löscher, and G. Kirchengast (oral): Error characteristics of refractivity profiles retrieved from CHAMP radio occultation data, EGU, 1st General Assembly, Nice, France, April 2004

Selected Further Presentations
(at Meetings of Int´l Bodies, Universities, Public Symposia, etc.)

Kirchengast G., U. Foelsche, and D. Baumgartner (invited): Klimaforschung und Umweltmeteorologie an der UniGraz, 1. Österreichischer Meteorologentag, Innsbruck, Austria, November 2004.

Foelsche, U.(invited): Klima im Wandel, Sommeruniversität "Graz in Space", Graz, Austria, September 2004.

Foelsche, U., G. Kirchengast, A. Gobiet, A.K. Steiner, A. Löscher, M. Borsche, J. Wickert, and T. Schmidt: Das CHAMPCLIM Projekt - Klimabeobachtung mit Satelliten, 8. Österr. Klimatag, Univ. f. Bodenkultur, Vienna, Austria, April 2004.

Foelsche, U. (invited): Klimwandel: Entwicklung extremer Wetterereignisse und Auswirkungen auf Österreich, Jahresgespräche im Schlo&szl; Pichl, Austria, January 2004.

Presentations at International Conferences/Workshops/Seminars

Gobiet, A., G. Kirchengast, C. Retscher , and J. Wickert (poster): Upper Tropospheric and Stratospheric Radio Occultation Retrieval - A Validation Study Based on Data from CHAMP, ENVISAT Instruments, and NWP Analyses, AGU Fall Meeting, San Francisco, CA., December 2003.

Foelsche U. and Kirchengast (poster): Observing Climate Change with the Radio Occultation Technique: From Simulation Studies to Satellite Constellations, 30th International Symposium on Remote Sensing of the Environment, Honolulu, Hawai'i, U.S.A., November 2003.

Kirchengast, G., P. Hoeg, and U. Foelsche (oral): The ESA Radio Occultation Mission Exploring Climate Variability and Change from Space, 30th International Symposium on Remote Sensing of the Environment, Honolulu, Hawai'i, U.S.A., November 2003.

Foelsche U. and G. Kirchengast (invited): Errors in GNSS Radio Occultation Data: Relevance of the Geometry of Reference Profiles, URSI workshop on Atmospheric Remote Sensing using Satellite Navigation Systems, Matera, Italy, October 2003.

Foelsche, U. (invited, opening talk): Entwicklung extremer Wetterereignisse und regionale Auswirkungen auf Österreich, HDP-A workshop: Extreme Wetterereignisse - Auswirkungen und Auswege für betroffene österreichische Wirtschaftssektoren, Graz, Austria, September 2003.

Steiner, A.K. (invited poster): Environmental research in Biosphere 2, 15th Annual Conference of the Academia Europea, Graz, Austria, September 2003.

Foelsche, U. (invited poster): Observing climate change with the radio occultation technique, 15th Annual Conference of the Academia Europea, Graz, Austria, September 2003.

Foelsche U., A. Gobiet, A. Löscher, G. Kirchengast, A.K. Steiner, J. Wickert, and T. Schmidt (poster): The CHAMPCLIM project: An overview, 2nd CHAMP science meeting, Potsdam, Germany, September 2003.

Gobiet, A., G. Kirchengast, J. Wickert, C. Retscher, D.-Y. Wang , A. Hauchecorne (oral): Evaluation of Stratospheric Radio Occultation Retrieval Using Data from CHAMP, MIPAS, GOMOS, and ECMWF Analysis Fields, 2nd CHAMP science meeting, Potsdam, Germany, September 2003.

Wickert J, A. Gobiet, G. Beyerle, A.K. Steiner, G. Kirchengast, U. Foelsche, and T. Schmidt (oral): GPS radio occultation with CHAMP: Comparison of atmospheric profiles from GFZ Potsdam and IGAM Graz, 2nd CHAMP science meeting, Potsdam, Germany, September 2003.

Steiner, A.K., U. Foelsche, A. Gobiet, and G. Kirchengast (invited): Simulation studies on the analysis of radio occultation data, 2nd GRAS SAF User Workshop, Helsingør, Denmark, June 2003.

Foelsche, U., and G. Kirchengast (oral): Dependence of errors in GNSS radio occultation data on the geometry of reference profiles, EGS-AGU-EUG Joint Assembly 2003, Nice, France, April 2003.

Hoeg, P., and G. Kirchengast (invited): The ACE+ Mission: Exploring atmosphere and climate of the Earth using GPS, GALILEO, and LEO-LEO occultations, EGS-AGU-EUG Joint Assembly 2003, Nice, France, April 2003.

Kirchengast, G. (oral): Occultation observations of atmosphere and climate change from space: a backbone for the Global Climate Observing System (GCOS), EGS-AGU-EUG Joint Assembly 2003, Nice, France, April 2003.

Kirchengast, G., U. Foelsche, A.K. Steiner, and A. Gobiet (invited): Watching climate change: Towards global climate monitoring using GPS occultation data from CHAMP and SAC-C, 23rd General Assembly of the IUGG (IUGG 2003), Sapporo, Japan, July 2003.

Loescher, A., G. Kirchengast, and U. Foelsche (poster): A 3D-Var assimilation scheme for optimal fusion of radio occultation data with GCM fields to derive global climatologies, EGS-AGU-EUG Joint Assembly 2003, Nice, France, April 2003.

Retscher, C., G. Kirchengast, and A. Gobiet (poster): An advanced ENVISAT/GOMOS temperature and ozon retrieval algorithm and first results, EGS-AGU-EUG Joint Assembly 2003, Nice, France, April 2003.

Schwaerz, M., and G. Kirchengast (poster): Joint retrieval of temperature, humidity and ozone profiles and of SST from IASI measurements, EGS-AGU-EUG Joint Assembly 2003, Nice, France, April 2003.

Steiner, A.K., and G. Kirchengast (oral): Empirical error characteristics of radio occultation data for assimilation systems, EGS-AGU-EUG Joint Assembly 2003, Nice, France, April 2003.

Selected Further Presentations
(at Meetings of Int´l Bodies, Universities, Public Symposia, etc.)

Kirchengast, G. (invited): Verändert sich unser Klima? Von Menschenhand gesteuert oder normale Entwicklung?, Symp. "Hochwasser, Stürme, Lawinen: Was kommt morgen?" des ökosozialen forums Steiermark, Pischelsdorf, Styria, Austria, January 2003.

Foelsche, U. (invited): Klima- und Umweltveränderungen im Laufe der Erdgeschichte, Pädagogisches Institut des Bundes, PI-Seminar Nr. 13301, Graz, Austria, January 2003.

Kirchengast, G. (invited): Die Atmosphären- und Klimasatellitenmission ACE+: Dem Klimawandel auf der Spur, PI (Pädagog. Institut) Seminar zu "Umwelt und Klima", Lichtenfelsgymnasium, Graz, Austria, January 2003.

Kirchengast, G. (invited): The end-to-end occultation sounding simulator EGOPS - EGOPS4 and next steps, Final Presentation Meeting of the EUMETSAT GRAS Test Data Generation Study, EUMETSAT, Darmstadt, Germany, March 2003.

Kirchengast, G., J. Fritzer, J. Ramsauer, and U. Foelsche (invited): Generation of GNSS Receiver for Atmospheric Sounding (GRAS) test data - results and insights, Final Presentation Meeting of the EUMETSAT GRAS Test Data Generation Study, EUMETSAT, Darmstadt, Germany, March 2003.

Kirchengast, G., and the EGOPS Development Team (J. Ramsauer, J. Fritzer, W. Poetzi, A. Steiner, U. Foelsche, P. Silvestrin, S. Syndergaard, M. Gorbunov, G. Larsen, K. Schultz, L. Kornblueh, H. Reichinger, S. Healy, S. Schweitzer, A. Gobiet, M. Schwaerz, M. Lohmann, A. Nielsen, L. Olsen, P. Eriksson, L. Gradinarsky, T. Kuhn, C. Melsheimer, S. Leroy, and several others in the institutions involved) (invited): The end-to-end occultation sounding simulator EGOPS - from EGOPS4 to EGOPS5, Mid-Term Review Meeting of the ESA ACE+ Phase A Scientific Support (ACEPASS) Study on LEO-LEO occultation characterization, ESA/ESTEC, Noordwijk, Netherlands, May 2003.

Kirchengast, G. (invited): Atmosphere and Climate Explorer ACE+: European context and an overview, IGAM/UniGraz Visit of EC Commissioner Philippe Busquin and Delegation, University of Graz, Austria, May 2003.

Kirchengast, G. (invited): ACE+ temperature and humidity retrieval performance for LEO-LEO occultation: first end-to-end simulation results of the ACEPASS study, 4th Meeting of the ACE+ Mission Advisory Group (ACE+ MAG), ESA/ESTEC, Noordwijk, Netherlands, August 2003.

Foelsche, U. (invited): Klimawandel: Entwicklung extremer Wetterereignisse und Auswirkungen auf Österreich, Landeskammer für Land- und Forstwirtschaft Steiermark, Oktober 2003.

Presentations at International Conferences/Workshops/Seminars

Foelsche, U., G. Kirchengast, A.K. Steiner, A. Gobiet, A. Löscher, C. Bichler, J. Wickert, G. Beyerle, L. Kornblueh, M. Gorbunov, S. Syndergaard, and A. Hauchecorne (invited): Global climate monitoring based on CHAMP/GPS radio occultation data, 1st CHAMP Science Meeting, Potsdam, Germany, January 2002.

Wickert, J., G. Beyerle, G. Hajj, G. Kirchengast, T. Schmidt, C. Marquardt, and R. König (poster): Space-based single differencing: An alternative approach for CHAMP occultation processing, 1st CHAMP Science Meeting, Potsdam, Germany, January 2002.

Kirchengast, G., W. Pötzi, J. Ramsauer, J. Fritzer, A.K. Steiner, P. Silvestrin, S. Syndergaard, M. Gorbunov, G.B. Larsen, K. Schultz, L. Kornblueh, H. Reichinger, and S. Healy (invited; opening talk): The End-to-end GNSS Occultation Performance Simulator version 4 (EGOPS4): Overview, exemplary applications, and future avenues, Int'l Presentation Meeting of the ESA EGOPS Extension Study, ESA/ESTEC, Noordwijk, Netherlands, March 2002.

Retscher, C., G. Kirchengast, and A. Hauchecorne (oral): Middle atmospheric ozone sounding by the ENVISAT/GOMOS stellar occultation sensor, 29th Int'l  Symposium on Remote Sensing of Environment (ISRSE), Buenos Aires, Argentina, April 2002.

Foelsche, U., and G. Kirchengast (oral): Sensitivity of GNSS radio occultation data to horizontal variability in the troposphere, 27th Gen. Assembly of the Europ. Geophys. Society, Nice, France, April 2002.

Kirchengast, G. (oral): On self-calibration of GNSS occultation - An unbiased look at residual biases, 27th Gen. Assembly of the Europ. Geophys. Society, Nice, France, April 2002.

Retscher, C., G. Kirchengast, A. Gobiet, and A. Hauchecorne (oral): Stratospheric temperature sounding by exploitation of bending angles of the ENVISAT/GOMOS occultation sensor, 27th Gen. Assembly of the Europ. Geophys. Society, Nice, France, April 2002.

Schwaerz, M., and G. Kirchengast (poster): A fast channel selection method and joint humidity and temperature retrieval from IASI measurements, 27th Gen. Assembly of the Europ. Geophys. Society, Nice, France, April 2002.

Steiner, A.K., and G. Kirchengast (poster): Empirical error analysis based on realistically simulated GNSS radio occultation data, 27th Gen. Assembly of the Europ. Geophys. Society, Nice, France, April 2002.

Foelsche, U., and G. Kirchengast (poster): Observing atmospheric effects of the next major volcanic eruption with the GNSS radio occultation technique, Chapman Conference on Volcanism and the Earth's Atmosphere, Thera, Greece, June 2002.

Foelsche, U., and G. Kirchengast (oral): Sensitivity of GNSS occultation profiles to horizontal variability in the troposphere, Int'l COSMIC Radio Occultation Science Workshop, Boulder, CO, U.S.A., August 2002.

Engeln, A.v., G. Nedoluha, G. Kirchengast, and S. Buehler (oral): 1DVAR assimilation of radio occultation data: A simulation study, Int'l COSMIC Radio Occultation Science Workshop, Boulder, CO, U.S.A., August 2002.

Kirchengast, G. (invited): Climate change monitoring by radio occultation: From simulation studies via CHAMP to COSMIC and ACE+ constellations, Int'l COSMIC Radio Occultation Science Workshop, Boulder, CO, U.S.A., August 2002.

Gobiet, A., G. Kirchengast, U. Foelsche, A.K. Steiner, and A. Loescher (oral): Advancements of GNSS occultation retrieval in the stratosphere for climate monitoring, 2002 EUMETSAT Meteorol. Satellite Data Users Conference, Dublin, Ireland, September 2002.

Foelsche, U., and G. Kirchengast (oral): Sensitivity of GNSS occultation profiles to horizontal variability in the troposhere, 1st Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-1), Graz, Austria, September 2002.

Gobiet, A., and G. Kirchengast (oral): Advancement of GNSS radio occultation retrieval in the upper stratosphere, 1st Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-1), Graz, Austria, September 2002.

Kirchengast, G. (opening talk): Occultations for probing atmosphere and climate: Setting the scene, 1st Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-1), Graz, Austria, September 2002.

Kirchengast, G. (oral): End-to-end simulation of atmospheric sounding by occultation sensors – EGOPS4 and beyond, 1st Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-1), Graz, Austria, September 2002.

Ramsauer, J., J. M. Fritzer, and G. Kirchengast (software demo): End-to-end GNSS occultation simulations live – EGOPS4 software demonstration, 1st Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-1), Graz, Austria, September 2002.

Rehrl, C., and G. Kirchengast (poster): Mesospheric temperature and ozone sounding by the SMAS solar occultation sensor, 1st Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-1), Graz, Austria, September 2002.

Retscher, C., G. Kirchengast, A. Gobiet, and A. Hauchecorne (oral): Stratopheric temperature and ozone sounding with ENVISAT/GOMOS stellar occultation, 1st Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-1), Graz, Austria, September 2002.

Steiner, A. K., and G. Kirchengast (poster): Ensemble-based analysis of errors in atmospheric profiles retrieved from GNSS occultation data, 1st Int'l Workshop on Occultations for Probing Atmosphere and Climate (OPAC-1), Graz, Austria, September 2002.

Kirchengast, G. (invited): ACE+ objectives, mission concept, and science team building, 1st ACE+ International Science Team (ACE+ IST) Meeting, Graz, Austria, September 2002.

Steiner, A. K., and G. Kirchengast (oral): Climate monitoring using GNSS occultation: Empirical error analysis of GNSS radio occultation data, Workshop on Atmospheric Investigations Using GPS Techniques, 4th Oersted International Science Team Conference (OIST-4), Copenhagen, Denmark, September 2002.

Kirchengast, G., U. Foelsche, and A. K. Steiner (invited): Climate monitoring using GNSS occultation: From promises via simulation studies to real monitoring and beyond, 4th Oersted International Science Team Conference (OIST-4), Copenhagen, Denmark, September 2002.

Selected Further Presentations
(at Meetings of Int´l Bodies, Universities, Public Symposia, etc.)

Foelsche, U. (invited): Klima- und Umweltveränderungen im Laufe der Erdgeschichte, Pädagogisches Institut des Bundes, PI-Seminar Nr. 13201, Graz, Austria, January 2002.

Kirchengast, G., U. Foelsche, A. Gobiet, and J. Ramsauer (invited): Error analysis of GNSS radio occultation for climate applications: Sensitivity to instrumental errors, ionospheric residual and high-altitude initialization errors, and horizontal variability, Final Review Meeting of the ESA Atmos. Clim. Experiment (ACE) Science Support Study, ESA/ESTEC, Noordwijk, Netherlands, March 2002.

Foelsche, U., G. Kirchengast, A.K. Steiner (invited): Klimawandel-Monitoring mit satellitengetragenen GNSS Okkultationssensoren, 7tes Österr. Klimakolloquium, Univ. f. Bodenkultur, Vienna, Austria, March 2002.

Kirchengast, G. (invited): EGOPS-Version 4: Objectives, new features, and future avenues, 13th Meeting of the ESA/EUMETSAT GNSS Receiver for Atmospheric Sounding Science Advisory Group (GRAS-SAG), ESA/ESTEC, Noordwijk, Netherlands, May 2002.

Kirchengast, G. (invited): Monitoring des Klimawandels mittels Okkultationsmethoden: von Simulationsstudien über CHAMP zu Konstellationsmissionen wie ACE+, Scientific Seminar at GFZ Potsdam, GeoForschungsZentrum (GFZ) Potsdam, Germany, July 2002.

Kirchengast, G. (invited): ACE+ – Atmosphere and Climate Explorer mission objectives, overview, and science requirements and ACEPASS – ACE+ Phase A Scientific Support Study on LEO-LEO occultation characterization, 1st Meeting of the ACE+ Mission Advisory Group (ACE+ MAG), ESA/ESTEC, Noordwijk, Netherlands, August 2002.

Kirchengast, G. (invited): ACE+ – Atmosphere and Climate Explorer based on GPS, GALILEO, and LEO-LEO radio occultation, BNSC/NERC (Brit. Nat. Space Centre/Natural Environ. Research Council) Town Meeting on 2nd Round Selection of ESA Earth Explorer Opportunity Missions, London, U.K., September 2002.

Kirchengast, G., J. Ramsauer, and J. Fritzer (invited): Generation of GNSS Receiver for Atmospheric Sounding (GRAS) test data - overview and setup, Mid-Term Review Meeting of the EUMETSAT GRAS Test Data Generation Study, EUMETSAT, Darmstadt, Germany, December 2002.

Presentations at International Conferences/Workshops/Seminars

Foelsche, U., G. Kirchengast, A.K. Steiner, L. Kornblueh, E. Manzini, and L. Bengtsson (oral): Error analysis for climate change monitoring by GNSS occultation sensors, 26th Gen. Assembly of the Europ. Geophys. Society (EGS), Nice, France, March 2001.

Kirchengast, G., W. Pötzi, J. Ramsauer, A.K. Steiner, S. Syndergaard, M. Gorbunov, G.B. Larsen, K. Schultz, H. Reichinger, and P. Silvestrin (oral): EGOPS4 - An end-to-end simulator for atmospheric sounding based on GNSS signals, 26th Gen. Assembly of the Europ. Geophys. Society (EGS), Nice, France, March 2001.

Rehrl, C., and G. Kirchengast (oral): A realistic transmission model for mesospheric ozone and temperature profiling by solar UV occultation, 26th Gen. Assembly of the Europ. Geophys. Society, Nice, France, March 2001.

Rieder, M.J., and G. Kirchengast (poster): Error analysis for mesospheric temperature profiling based on absorptive occultation or air density data, 26th Gen. Assembly of the Europ. Geophys. Society, Nice, France, March 2001.

Weisz, E., J.A. Lerner, and G. Kirchengast (poster): A fast channel selection method and characteristics of temperature retrievals from IASI measurements, 26th Gen. Assembly of the Europ. Geophys. Society, Nice, France, March 2001.

Kirchengast, G., A.K. Steiner, U. Foelsche, L. Kornblueh, E. Manzini, and L. Bengtsson (invited): Climate change monitoring by GNSS occultation: An observing system simulation experiment, American Geophys. Union (AGU) 2001 Spring Meeting, Boston/MA, U.S.A., May 2001.

Steiner, A. K., and G. Kirchengast (oral/prevented from coming; presentation pdf sent to convener for distrib.): Empirical error analysis of GNSS radio occultation data, 8th Scientific Assembly of the International Association of Meteorology and Atmospheric Sciences (IAMAS), Innsbruck, Austria, July 2001.

Löscher, A. (poster): The principle of radio and star occultation observations to retrieve atmospheric temperature, water vapor and ozone profiles with high vertical resolution, International Space University (ISU) Alumni Conference, Bremen, Germany, August 2001.

Foelsche, U., G. Kirchengast, A.K. Steiner, L. Kornblueh, E. Manzini, and L. Bengtsson (poster): Klimawandel-Monitoring mit satellitengetragenen GNSS Okkultationssensoren, DACH (deutsch-österr.-schweiz.) Meteorologentagung 2001, Vienna, Austria, September 2001.

Kirchengast, G., P. Silvestrin, G. Elgered, A. Hauchecorne, E. Kaas, S. Leroy, D. Offiler, N. Floury, J. Fuchs, J. Guijarro, and P. Hoeg (plenary presentation of satellite mission): The Water vapour and temperature in the Troposphere and Stratosphere (WATS) Mission, User Consult. Meeting on Future ESA Earth Explorer Core Missions, Granada, Spain, October 2001.

Selected Further Presentations
(at Meetings of Int´l Bodies, Universities, Public Symposia, etc.)

Kirchengast, G., and M. Gorbunov (invited): The canonical transform – a new robust method for bending angle retrieval under multipath conditions, 11th Meeting of the ESA/EUMETSAT GNSS Receiver for Atmospheric Sounding Science Advisory Group (GRAS-SAG), ESA/ESTEC, Noordwijk, Netherlands, May 2001.

Ramsauer, J., and G. Kirchengast (invited): Sensitivity of temperature profiles retrieved from GNSS occultation data to instrumental errors,Progr. Meeting of the ESA Atmos. Clim. Experiment (ACE) Science Support Study, ESA/ESTEC, Noordwijk, Netherlands, May 2001.

Kirchengast, G. (invited): The START-ATCHANGE programme - An atmospheric remote sensing and climate system research cornerstone, START/Wittgenstein-Workshop of Prize Winners, International Jury and Austrian Science Fund Delegates, FWF (Austrian Science Fund) Weyringerg., Vienna, Austria, June 2001.

Kirchengast, G. (invited): Atmosphärensondierung mittels GNSS-Okkultation und Klimawandel-Monitoring als Beispielanwendung, Meteorologisches Kolloquium der Univ. Frankfurt/Main und der Univ. Mainz, Inst. for Meteorology and Geophysics, Univ. Frankfurt/Main, Germany, July 2001.

Kirchengast, G. (invited): The End-to-end GNSS Occultation Performance Simulator EGOPS4 - An Introduction, Seminar of the Inst. Atmos. Phys./Univ. of Arizona, Inst. of Atmospheric Physics, Univ. of Arizona, Tucson, U.S.A., July 2001.

Kirchengast, G., A. Gobiet, and J. Ramsauer (invited): Error analysis for climate applications: on ionospheric residual errors, high-altitude initialization errors, and residual biases, Mid-Term Review Meeting of the ESA Atmos. Clim. Experiment (ACE) Science Support Study, TERMA Elektronik A/S, Birkeroed, Denmark, September 2001.

Kirchengast, G. (invited; opening talk): Von globalen Klimaänderungen zum Klimawandel in Österreich, Österr. Klimabündnis-Jahrestreffen 2001 "Wege in ein neues Energiezeitalter", Weiz/Gleisdorf, Styria, Austria, September 2001.

Presentations at International Conferences/Workshops/Seminars

Kirchengast, G., A.K. Steiner, U. Foelsche, L. Kornblueh, E. Manzini, and L. Bengtsson (oral): Spaceborne climate change monitoring by GNSS occultation sensors, 11th Symp. on Global Change Studies, American Met. Society (AMS) 2000 Annual Meeting, Long Beach/CA, U.S.A., January 2000.

Engeln, A. v., S. Bühler, G. Kirchengast, and K. Künzi (poster; awarded by a Jury of senior peers as 2nd best of ~20 student-lead-author posters in the session): Temperature profile retrieval from surface to mesopause by combining GNSS radio occultation and passive MW limb sounder data, 10th Conf. on Satellite Meteorology and Oceanography, American Met. Society (AMS) 2000 Annual Meeting, Long Beach/CA, U.S.A., January 2000.

Lerner, J., E. Weisz, and G. Kirchengast (oral): Optimal estimation of temperature profiles using a subset of IASI channels, 10th Conference on Satellite Meteorology and Oceanography, American Met. Society (AMS) 2000 Annual Meeting, Long Beach/CA, U.S.A., January 2000.

Kirchengast, G., W. Pötzi, J. Ramsauer, A. Veronig, M. Gorbunov, G. Holler, A.K. Steiner, S. Syndergaard, G.B. Larsen, P. Hoeg, P. Silvestrin, and A. Tobias (invited; 60 min opening talk): The End-to-end GNSS Occultation Performance Simulator (EGOPS) version 3, 2nd Int´l Seminar on Radio Occultation with GNSS, ESA/ESTEC, Noordwijk, Netherlands, January 2000.

Kirchengast, G., J. Ramsauer, W. Pötzi (oral): Hands-on demonstration of EGOPS-3 with emphasis on new features, 2nd Int´l Seminar on Radio Occultation with GNSS, ESA/ESTEC, Noordwijk, Netherlands, January 2000.

Gorbunov, M., and G. Kirchengast (invited step-in): Wave optics propagation and diffraction correction in EGOPS-3 – An introduction and overview, 2nd Int´l Seminar on Radio Occultation with GNSS, ESA/ESTEC, Noordwijk, Netherlands, January 2000.

Sokolovskiy, S., C. Rocken, G. Kirchengast, M. Sust, H. Reichinger, and F. Zangerl (oral): Tracking radio occultation signals through the troposphere: Advances via realistic high-resolution simulations, 2nd Int´l Seminar on Radio Occultation with GNSS, ESA/ESTEC, Noordwijk, Netherlands, January 2000.

Kirchengast, G., A. K. Steiner, U. Foelsche, L. Kornblueh, E. Manzini, and L. Bengtsson (oral): A climate monitoring observing system simulation experiment with GNSS radio occultation data, 2nd Int`l Seminar on Radio Occultation with GNSS, ESA/ESTEC, Noordwijk, Netherlands, January 2000.

Kirchengast, G. (invited; plenary lecture/opening talk of meeting): Rauschen als Signal: Das Global Positioning System (GPS) in der Atmosphärenphysik, Frühjahrstagung 2000 der Deutschen Phys. Gesellschaft (DFG), Bremen, Germany, March 2000.

Foelsche, U., and G. Kirchengast (oral): A new "geometric'' mapping function for the hydrostatic delay at GPS frequencies, 25th Gen. Assembly of the Europ. Geophys. Society (EGS), Nice, France, April 2000.

Steiner, A. K., G. Kirchengast, U. Foelsche, L. Kornblueh, E. Manzini, and L. Bengtsson (invited): GNSS occultation sounding for climate monitoring, 25th Gen. Assembly of the Europ. Geophys. Society (EGS), Nice, France, April 2000.

Weisz, E., Lerner, J.A., and G. Kirchengast (poster): Retrieval characterisitics of temperature and humidity profiles from the IASI sensor, 25th Gen. Assembly of the Europ. Geophys. Society (EGS), Nice, France, April 2000.

Weisz, E., Lerner, J.A., and G. Kirchengast (oral): Estimation of atmospheric temperature and humidity profiles using IASI measurements, International Radiation Symposium (IRS-2000), St. Petersburg, Russia, July 2000.

Lerner, J., E. Weisz, and G. Kirchengast (oral): Retrieval of water vapor from IASI measurements, 11th Int´l ATOVS Study Conference, Budapest, Hungary, September 2000.

Kirchengast, G. (invited): Noise as a signal: The Global Navigation Satellite System (GNSS) in atmospheric physics, Int´l Scientific Seminar at IGAM (70th birthday of S.J. Bauer), Graz, Austria, October 2000.

Selected Further Presentations
(at Meetings of Int´l Bodies, Universities, Public Symposia, etc.)

Kirchengast, G. (invited): Von Wettervorhersage bis Klimaforschung – Nutzung des Global Positioning System in der Meteorologie, Meteorologisch-Geophysikalisches Kolloquium der Meteorol./Geophys.-Inst. Wiens, Central Inst. for Meteorol. and Geodyn., Vienna, Austria, January 2000.

Kirchengast, G. (invited): Theoretical and empirical analysis of errors in occultation data products, 9th Meeting of the ESA/EUMETSAT GNSS Receiver for Atmospheric Sounding Science Advisory Group (GRAS-SAG), ESA/ESTEC, Noordwijk, The Netherlands, May 2000.

Kirchengast, G. (invited): Klimawandel und Klimamodellierung, Vortragsreihe "Facetten der Physik" der Physik-Inst./Univ. Graz, Inst. for Theoret. Phys., Graz, Austria, December 2000.

Presentations at International Conferences/Workshops/Seminars

Rieder, M.J., and G. Kirchengast (poster): Water vapor profiling with SSM/T-2 data employing a hybrid inversion algorithm, 10th Int´l ATOVS Study Conference, Boulder/CO, U.S.A., January 1999.

Foelsche, U., and G. Kirchengast (oral): Tropospheric water vapor imaging by combination of spaceborne and ground-based GNSS sounding data, 24th Gen. Assembly of the Europ. Geophys. Society (EGS), The Hague, The Netherlands, April 1999.

Kirchengast, G. (invited): Climate change monitoring from space by occultation sensors – The promise and the challenges for science and measurement, Int´l Forum on Frontiers in Science and Measurement, Teddington/Middlesex, U.K., June 1999.

Kirchengast, G., A. K. Steiner, U. Foelsche, L. Kornblueh, E. Manzini, and L. Bengtsson (oral): GNSS occultation sounding for climate monitoring and atmospheric change analysis, 22nd General Assembly of the International Union of Geodesy and Geophysics (IUGG), Birmingham, U.K., July 1999.

Kirchengast, G., A.K. Steiner, L. Kornblueh, E. Manzini, and L. Bengtsson (oral): GNSS occultation sounding for climate monitoring and atmospheric change analysis, 26th Gen. Assembly of the Int´l Union of Radio Science (URSI), Toronto, Canada, August 1999.

Foelsche, U., and G. Kirchengast (poster & oral by invited step-in): Water vapor imaging in the troposphere by combination of GNSS occultation data and ground-based GPS measurements, 26th Gen. Assembly of the Int´l Union of Radio Science, Toronto, Canada, August 1999.

Selected Further Presentations
(at Meetings of Int´l Bodies, Universities, Public Symposia, etc.)

Kirchengast, G. (invited): Menschgemachter Klimawandel – Ein globales Problem für das 21. Jahrhundert?, Geographisches Kolloquium der Univ. Graz und der Österr. Geogr. Gesellschaft/Zweigst. Graz, Inst. for Geography/Univ. of Graz, Austria, May 1999.

Kirchengast, G. (invited): Klimamodelle als Beispiel komplexer Modellierung, Pro Scientia Sommerakademie 1999 "Modell und Wirklichkeit", Bildungshaus Sodalitas, Tainach/Tinje, Carinthia, Austria, September 1999.

Kirchengast, G. (invited): The End-to-end GNSS Occultation Performance Simulator – status, exemplary results, and availability, 8th Meeting of the ESA/EUMETSAT GNSS Receiver for Atmospheric Sounding Science Advisory Group (GRAS-SAG), EUMETSAT, Darmstadt, Germany, December 1999.

Presentations at International Conferences/Workshops/Seminars

Kirchengast, G., J. Ramsauer, W. Mühlmann, G. Holler, K. Holler, W. Rothleitner, K. Hocke, A.K. Steiner, U. Foelsche, K. Schultz, D. Hansen, L. Maresi, S. Syndergaard, M. Mortensen, P. Hoeg, P. Silvestrin, J. Fuchs, and A. Tobias (invited): The End-to-end GNSS Occultation Performance Simulator EGOPS – Overview and exemplary applications, 1st Int´l Seminar on Atmospheric Sounding by Radio Occultation, ESA/ESTEC, Noordwijk, Netherlands, January 1998.

Kirchengast, G., and U. Foelsche (oral): Atmospheric imaging with radio occultation data: geometrical aspects, 1st Int´l Seminar on Atmospheric Sounding by Radio Occultation, ESA/ESTEC, Noordwijk, Netherlands, January 1998.

Kirchengast, G., R. Leitinger, K. Hocke, A.K. Steiner, H.-P. Ladreiter, and W. Rothleitner (oral): Ionospheric corrections and ionospheric applications of radio occultation data, 1st Int´l Seminar on Atmospheric Sounding by Radio Occultation, ESA/ESTEC, Noordwijk, The Netherlands, January 1998.

Foelsche, U., and G. Kirchengast (oral): Atmospheric Imaging involving GNSS Occultation: A Quantitative Study, 23rd Gen. Assembly of the Europ. Geophys. Society (EGS), Nice, France, April 1998.

Kirchengast, G. (oral): Orbit quality requirements for spaceborne atmospheric sounding using GNSS, 23rd Gen. Assembly of the Europ. Geophys. Society (EGS), Nice, France, April 1998.

Kirchengast, G., J. Ramsauer, W. Mühlmann, G. Holler, K. Holler, W. Rothleitner, K. Hocke, A.K. Steiner, U. Foelsche, K. Schultz, D. Hansen, L. Maresi, S. Syndergaard, M. Mortensen, P. Hoeg, P. Silvestrin, J. Fuchs, and A. Tobias (oral): An end-to-end occultation sounding simulator: Overview and exemplary results, 23rd Gen. Assembly of the Europ. Geophys. Society (EGS), Nice, France, April 1998.

Kirchengast, G. (invited): EGOPS news and climate monitoring extensions, MPIM Int´l GNSS Occultation Workshop, Max-Planck-Institute for Meteorology (MPIM), Hamburg, Germany, September 1998.

Kirchengast, G., J. Ramsauer, W. Mühlmann, S. Syndergaard, K. Schultz, and P. Silvestrin (oral): Comprehensive simulation of atmospheric sounding based on GPS/GLONASS radio occultation, 1998 American Geophys. Union (AGU) Fall Meeting, San Francisco/CA, U.S.A., December 1998.

Steiner, A. K., and G. Kirchengast (oral): Atmosphere profiles from GPS/MET observations: Data validation and analysis of gravity wave spectra, 1998 Fall Meeting of the American Geophysical Union (AGU), San Francisco, USA, December 1998.

Selected Further Presentations
(at Meetings of Int´l Bodies, Universities, Public Symposia, etc.)

Kirchengast, G. (invited): Hochauflösende Temperatur- und Feuchteprofilbestimmung mit GNSS–Okkultationsmessungen, Umweltphysikalisches Seminar, Inst. f. Umweltphysik/ Inst. f. Fernerkundung, Univ. of Bremen, Bremen, Germany, July 1998.

Kirchengast, G. (invited): Wasser und Klima - Die Schlüsselrolle des nassen Elements beim globalen Klimawandel, Tagung "Das Wasser der Alpen" der Nationalparkakademie Hohe Tauern, Heiligenblut, Carinthia, Austria, September 1998.

Presentations at International Conferences/Workshops/Seminars

Kirchengast, G., and A.K. Steiner (oral): Methods for ionospheric correction of GNSS occultation data under adverse conditions, Joint Progress Meeting of the ESA Studies on Atmospheric Sounding using GNSS Occultation, ESA/ESTEC, Noordwijk, The Netherlands, January 1997.

Leitinger, R., G. Kirchengast, and H.-P. Ladreiter (oral): Ionospheric tomography combining data from spaceborne GNSS and ground-based NNSS, Joint Progress Meeting of the ESA Studies on Atmospheric Sounding using GNSS Occultation, ESA/ESTEC, Noordwijk, The Netherlands, January 1997.

Foelsche, U., and G. Kirchengast (oral): Space–time resolution conditions for atmospheric imaging involving GNSS occultation: a quantitative study, Joint Review Meeting of the ESA Studies on Atmospheric Sounding using GNSS Occultation, Birkeroed, Denmark, April 1997.

Leitinger, R., G. Kirchengast, and H.-P. Ladreiter (oral): Ionospheric tomography involving real spaceborne GPS/MET and ground-based NNSS data, Joint Review Meeting of the ESA Studies on Atmospheric Sounding using GNSS Occultation, Birkeroed, Denmark, April 1997.

Kirchengast, G., J. Ramsauer, W. Mühlmann, G. Holler, K. Holler, K. Hocke, A.K. Steiner, U. Foelsche, K. Schultz, L. Maresi, S. Syndergaard, M. Mortensen, P. Hoeg, P. Silvestrin, and A. Tobias (oral): End-to-end GNSS occultation performance simulation, 22nd Gen. Assembly of the Europ. Geophys. Society (EGS), Vienna, Austria, April 1997.

Hocke, K., G. Kirchengast, and A.K. Steiner (poster): Inversion of GPS/MET data - problems and solutions,  22nd Gen. Assembly of the Europ. Geophys. Society (EGS), Vienna, Austria, April 1997.

Steiner, A. K., K. Hocke, G. Kirchengast, and H.P. Ladreiter (oral): Analysis of GPS/MET data and error estimation with discrete matrix inversion, 22nd Gen. Assembly of the Europ. Geophys. Society (EGS), Vienna, Austria, April 1997.

Kirchengast, G. (invited): Atmosphären- und Ionosphärensondierung mit GNSS-Okkultationsmessungen, 1997 Int´l Union of Radio Science (URSI) German Meeting, Kleinheubach/Main, Germany, October 1997.

Selected Further Presentations
(at Meetings of Int´l Bodies, Universities, Public Symposia, etc.)

Kirchengast, G. (invited): Atmospheric sounding principles and critical areas of instrument development for GNSS-based sounding, Working Meeting of the ESA Study on Development of a GNSS Receiver for Atmospheric Sounding, Austrian Aerospace, Vienna, Austria, February 1997.

Kirchengast, G. (invited): Der Treibhauseffekt - eine globale Gefahr für das 21. Jahrhundert?, Symposium "Umweltschutz als positive Zukunktsaufgabe für eine nachhaltige regionale Fremdenverkehrsentwicklung" der Klimabündnisregion Grossglockner, Winklern i. Mölltal, Carinthia, Austria, May 1997.

Presentations at International Conferences/Workshops/Seminars

Kirchengast, G., K. Hocke, and H.-P. Ladreiter (invited): GNSS-based atmospheric profiling: Local and global high-quality information on key climate variables, 1996 General Assembly of the Int´l Union of Radio Science (URSI), Lille, France, August 1996.

Kirchengast, G., R. Leitinger, and H.-P. Ladreiter (oral): Tomographic reconstruction using data from GPS/MET and NNSS, 1996 General Assembly of the Int´l Union of Radio Science (URSI), Lille, France, August 1996.

Kirchengast, G., K. Hocke und H.-P. Ladreiter (poster): Regionale und globale Messung klimatischer Schlüsselvariablen mit hoher Genauigkeit durch GNSS-basierte Atmosphärenfernerkundung, 1996 Int´l Union of Radio Science (URSI) German Meeting, Kleinheubach/Main, Germany, October 1996.

Kirchengast, G. und H.-P Ladreiter (oral): Das Potential der Radio-Okkultationstechnik basierend auf GPS/GLONASS-Signalen zur Bestimmung fundamentaler atmosphärischer Parameter, 1995 Int´l Union of Radio Science (URSI) German Meeting, Kleinheubach/Main, Germany, October 1995.

Kirchengast, G. (oral): Methodology and main characteristics of the radio occultation technique, Int´l Presentation Meeting of the ESA Study on the Derivation of Atmospheric Properties using a Radio Occultation Technique, ESA/ESTEC, Noordwijk, The Netherlands, November 1995.

Kirchengast, G., R. Leitinger, and H.-P. Ladreiter (oral): Ionospheric errors in radio occultation data and their removal, Int´l Presentation Meeting of the ESA Study on the Derivation of Atmospheric Properties using a Radio Occultation Technique, ESA/ESTEC, Noordwijk, The Netherlands, November 1995.

Selected Further Presentations
(at Meetings of Int´l Bodies, Universities, Public Symposia, etc.)

Kirchengast, G. (invited): An End-to-end GNSS Occultation Performance Simulator: scientific and technical overview, Kick-off Meeting of the ESA Study on Techniques and Implementation Concepts for Atmospheric Sounding with GNSS occultation, ESA/ESTEC, Noordwijk, The Netherlands, February 1996

Kirchengast, G. (invited): End-to-end GNSS Occultation Performance Simulator functionality definition and software design, Kick-off Meeting of the ESA Study on Simulation and Performance Verification of the GNSS Radio Occultation Technique, ESA/ESTEC, Noordwijk, The Netherlands, August 1996.

Kirchengast, G. (invited): Temperatur- und Feuchteprofilbestimmung aus GPS-Daten, DLR Institutsseminar, DLR Inst. f. Physik der Atmosphäre, Oberpfaffenhofen/München, Germany, November 1995.