Oral Scientific Publications

Year 2002

Presentations at International Conferences/Workshops/Seminars

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

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. (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.

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.

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.

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

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.

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. (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)
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)
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., 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.