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Publications
Helmholtz Centre Potsdam
GFZ German Research Centre for Geosciences
(Co) Author: Heise, S.
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Steiner, A. K.; Hunt, D.; Ho, S.-P.; Kirchengast, G.; Mannucci, A. J.; Scherllin-Pirscher, B.; Gleisner, H.; v. Engeln, A.; Schmidt, T.; Ao, C.; Leroy, S. S.; Kursinski, E. R.; Foelsche, U.; Gorbunov, M.; Heise, S.; Kuo, Y.-H.; Lauritsen, K. B.; Marquardt, C.; Rocken, C.; Schreiner, W.; Sokolovskiy, S.; Syndergaard, S.; Wickert, J. (2013): Quantification of structural uncertainty in climate data records from GPS radio occultation. Atmospheric Chemistry and Physics, 13, 3, 1469-1484.
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Ho, S.; Hunt, D.; Steiner, A.; Mannucci, A. J.; Kirchengast, G.; Gleisner, H.; Heise, S.; v. Engeln, A.; Marquardt, C.; Sokolovskiy, S.; Schreiner, W.; Ao, C.; Wickert, J.; Syndergaad, S.; Lauritsen, K.; Leroy, S.; Kursinski, R.; Kuo, Y.-H.; Scherllin-Pirscher, B.; Foelsche, U.; Schmidt, T.; Gorbunov, M. (2012): Reproducibility of GPS radio occultation data for climate monitoring: Profile-to-profile inter-comparison of CHAMP climate records 2002 to 2008 from six data centers. Journal of Geophysical Research, 117, D18111.
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Zus, F.; Bender, M.; Deng, Z.; Dick, G.; Heise, S.; Shangguan, M.; Wickert, J. (2012): A methodology to compute GPS slant total delays in a numerical weather model. Radio Science, 47, No. 2, RS2018.
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Beyerle, G.; Grunwaldt, L.; Heise, S.; Köhler, W.; König, R.; Michalak, G.; Rothacher, M.; Schmidt, T.; Wickert, J.; Tapley, B. D.; Giesinger, B. (2011): First results from the GPS atmosphere sounding experiment TOR aboard the TerraSAR-X satellite. Atmospheric Chemistry and Physics, 11, 13, 6687-6699.
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Palm, M.; Melsheimer, C.; Noël, S.; Heise, S.; Notholt, J.; Burrows, J.; Schrems, O. (2010): Integrated water vapor above Ny Ålesund, Spitsbergen: a multi-sensor intercomparison. Atmospheric Chemistry and Physics, 10, 3, 1215-1226.
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Ho, S.-P.; Kirchengast, G.; Leroy, S.; Wickert, J.; Mannucci, A. J.; Stiner, A. K.; Hunt, D.; Schreiner, W.; Sokolovskiy, S.; Ao, C. O.; Borsche, M.; von Engeln, A.; Foelsche, U.; Heise, S.; Iijima, B.; Kuo, Y.-H.; Kursinski, R.; Pirscher, B.; Ringer, M.; Rocken, C.; Schmidt, T. (2009): Estimating the Uncertainty of using GPS Radio Occultation Data for Climate Monitoring: Inter-comparison of CHAMP Refractivity Climate Records 2002-2006 from Different Data Centers. Journal of Geophysical Research, 114, D23107.
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Wickert, J.; Michalak, G.; Schmidt, T.; Beyerle, G.; Cheng, C. Z.; Healy, S. B.; Heise, S.; Huang, C. Y.; Jakowski, N.; Köhler, W.; Mayer, C.; Offiler, D.; Ozawa, E.; Pavelyev, A. G.; Rothacher, M.; Tapley, B.; Arras, C. (2009): GPS radio occultation: results from CHAMP, GRACE and FORMOSAT-3/COSMIC. Terrestrial Atmospheric and Oceanic Sciences, 20, 1, 35-50.
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Heise, S.; Wickert, J.; Beyerle, G.; Schmidt, T.; Smit, H.; Cammas, J. P.; Rothacher, M. (2008): Comparison of Water Vapour and Temperature Results From GPS Radio Occultation Aboard CHAMP With MOZAIC Aircraft Measurements. IEEE Transactions on Geoscience and Remote Sensing, 46, 11, 3406-3411.
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Schmidt, T.; Wickert, J.; Heise, S.; Flechtner, F.; Fagiolini, E.; Schwarz, G.; Zenner, L.; Gruber, T. (2008): Comparison of ECMWF analyses with GPS radio occultations from CHAMP. Annales Geophysicae, 26, 11, 3225-3234.
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Schroedter-Homscheidt, M.; Drews, M.A.; Heise, S. (2008): Total water vapor column retrieval from MSG-SEVIRI split window measurements exploiting the daily cycle of land surface temperatures. Remote Sensing of Environment, 112, 1, 249-258.
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Stankov, S. M.; Jakowski, N.; Heise, S. (2005): Reconstruction of ion and electron density profiles from space-based measurements of the upper electron content. Planetary and Space Science, 53, 9, 945-957.
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Stolle, C.; Schlüter, S.; Heise, S.; Jacobi, Ch.; Jakowski, N.; Friedel, S.; Kürschner, D.; Lühr, H. (2005): GPS ionospheric imaging of the north polar ionosphere on October 30, 2003. Advances in Space Research, 36, 11, 2201-2206.
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Wickert, J.; Beyerle, G.; König, R.; Heise, S.; Grunwaldt, L.; Michalak, G.; Reigber, C.; Schmidt, T. (2005): GPS radio occultation with CHAMP and GRACE: A first look at a new and promising satellite configuration for global atmospheric sounding. Annales Geophysicae, 23, 3, 653-658.
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Heise, S.; Jakowski, N. (2004): Combined assimilation of GPS based TEC data from CHAMP and SAC-C for ionosphere/plasmaphere imaging. Bulgarian Geophysical Journal, 30, 1-4, 23-31.
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Arras, C.; Wickert, J.; Jacobi, C.; Beyerle, G.; Heise, S.; Schmidt, T. (2013): Global Sporadic E Layer Characteristics Obtained from GPS Radio Occultation Measurements. - In: Lübken, F.-J. (Eds.), Climate and weather of the sun-earth system (CAWSES) : highlights from a priority program, Springer, 207-222.
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Beyerle, G.; Arras, C.; Heise, S.; Schmidt, T.; Wickert, J. (2010): GPS-Radiookkultation mit dem CHAMP-Satelliten. - In: Gathen, P. v. d.; Rinke, A.; Neuber, R.; Leutert, B. (Eds.), Polare Atmosphärenforschung in Potsdam : Festschrift anlässlich des 60. Geburtstages von Klaus Dethloff mit Beiträgen von wissenschaftlichen Weggefährten, Alfred-Wegener-Institut für Polar- und Meeresforschung, Forschungsstelle Potsdam, 133-141.
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Chen, J.; Bender, M.; Beyerle, G.; Dick, G.; Falck, C.; Ge, M.; Gendt, G.; Heise, S.; Ramatschi, M.; Schmidt, T.; Stosius, R.; Wickert, J. (2010): GNSS Activities for Natural Disaster Monitoring and Climate Change Detection at GFZ - an Overview. - In: Chuvieco, E.; Li, J.; Yang, X. (Eds.), Advances in Earth Observation of Global Change, Springer, 159-172.
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Wickert, J.; Beyerle, G.; Falck, C.; Healy, S. B.; Heise, S.; Köhler, W.; Michalak, G.; Offiler, D.; Pingel, D.; Ramatschi, M.; Rothacher, M.; Schmidt, T. (2010): Global atmospheric data from CHAMP and GRACE-A: Overview and results. - In: Flechtner, F.; Gruber, T.; Güntner, A.; Mandea, M.; Rothacher, M.; Schöne, T.; Wickert, J. (Eds.), System Earth via Geodetic-Geophysical Space Techniques, Springer, 433-441.
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Wickert, J.; Schmidt, T.; Michalak, G.; Heise, S.; Arras, C.; Beyerle, G.; Falck, C.; König, R.; Pingel, D.; Rothacher, M. (2009): GPS Radio Occultation with CHAMP, GRACE-A, SAC-C, TerraSAR-X, and FORMOSAT-3/COSMIC: Brief Review of Results from GFZ. - In: Steiner, A.; Pirscher, B.; Foelsche, U.; Kirchengast, G. (Eds.), New Horizons in Occultation Research : Studies in Atmosphere and Climate, Springer, 3-16.
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Wickert, J.; Beyerle, G.; Falck, C.; Flechtner, F.; Galas, R.; Grunwaldt, L.; Healy, S. B.; Heise, S.; Köhler, W.; König, R.; Massmann, F.-H.; Michalak, G.; Offiler, D.; Pingel, D.; Poli, P.; Ozawa, E.; Rothacher, M.; Schmidt, T.; Tapley, B.; Wergen, W. (2007): Global atmospheric data from CHAMP and GRACE in near-real time. Observations of the System Earth from Space : status seminar, 22 - 23 November 2007, Bavarian Academy of Sciences and Humanities, Munich; Programme & Abstracts, Koordinierungsbüro GEOTECHNOLOGIEN, 36-40.
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Wickert, J.; Gendt, G.; Beyerle, G.; Heise, S.; Helm, A.; Reigber, C.; Schmidt, T.; Jakowski, N.; Jacobi, C. (2007): Ground and Space Based GPS Atmospheric Sounding: Brief Overview and Examples. - In: Anandan, V. K.; Roettger, J.; Rao, D. N. (Eds.), Proceedings of the INTAR colloquium -International Network of Atmosphere Radar-, National Atmospheric Research Laboratory, Gadanki, 1-10.
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Beyerle, G.; Heise, S.; Kaschenz, J.; König-Langlo, G.; Reigber, C.; Schmidt, T.; Wickert, J. (2006): Refractivity biases in GNSS occultation data. - In: Fölsche, U.; Kirchengast, G.; Steiner, A. (Eds.), Atmosphere and climate : studies by occultation methods, Springer, 37-43.
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Jakowski, N.; Wilken, V.; Tsyulya, K.; Heise, S. (2006): Earthquake Signatures in the Ionosphre Deduced from Ground and Space Based GPS Measurements. - In: Flury, J.; Rummel, R.; Reigber, C.; Rothacher, M.; Boedecker, G.; Schreiber, U. (Eds.), Observation of the Earth System from Space, Springer, 43-54.
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Wickert, J.; Beyerle, G.; Schmidt, T.; Healy, S. B.; Heise, S.; Michalak, G.; Rothacher, M. (2006): GPS based atmospheric sounding with CHAMP: Results achieved after four years. Proceedings / The 2005 EUMETSAT Meteorological Satellite Conference : Dubrovnik, Croatia, 19 - 23 September 2005, Eumetsat, 39-47.
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Wickert, J.; Schmidt, T.; Beyerle, G.; Heise, S.; Reigber, C. (2006): Global Atmospheric Sounding with GPS Radio Occultation aboard CHAMP. - In: Flury, J.; Rummel, R.; Reigber, C.; Rothacher, M.; Boedecker, G.; Schreiber, U. (Eds.), Observation of the Earth System from Space, Springer, 55-70.
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Wickert, J.; Schmidt, T.; Beyerle, G.; Michalak, G.; König, R.; Reigber, C.; Heise, S. (2006): GPS radio occultation with CHAMP and GRACE: Recent results. - In: Foelsche, U.; Kirchengast, G.; Steiner, A. (Eds.), Atmosphere and climate : studies by occultation methods, Springer, 3-16.
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Heise, S.; Jakowski, N.; Cooke, D. (2005): Ionosphere/Plasmasphere imaging based on GPS navigation measurements from CHAMP and SAC-C. - In: Reigber, C.; Lühr, H.; Schwintzer, P.; Wickert, J. (Eds.), Earth Observation with CHAMP : Results from Three Years in Orbit, Springer, 471-476.
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Heise, S.; Stolle, C.; Schlüter, S.; Jakowski, N. (2005): Differential Code Bias of GPS Receivers in Low Earth Orbit: An Assessment for CHAMP and SAC-C. - In: Reigber, C.; Lühr, H.; Schwintzer, P.; Wickert, J. (Eds.), Earth Observation with CHAMP : Results from Three Years in Orbit, Springer, 465-470.
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Helm, A.; Beyerle, G.; Heise, S.; Schmidt, T.; Wickert, J. (2005): The continuous Wavelet Transform, a valuable analysis tool to detect atmospheric and ionospheric signatures in radiooccultation path delay data. - In: Reigber, C.; Lühr, H.; Schwintzer, P.; Wickert, J. (Eds.), Earth Observation with CHAMP - Results from Three Years in Orbit, Springer, 591-596.
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Stolle, C.; Schlüter, S.; Jacobi, C.; Jakowski, N.; Heise, S.; Raabe, A. (2005): Three-Dimensional Monitoring of the Polar Ionosphere with Ground- and Space-Based GPS. - In: Reigber, C.; Lühr, H.; Schwintzer, P.; Wickert, J. (Eds.), Earth Observation with CHAMP : Results from Three Years in Orbit, Spinger, 477-482.
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Jakowski, N.; Heise, S.; Wehrenpfennig, A.; Tsybulya, K. (2004): Ionospheric Radio Occultation Measurements and Space Weather. - In: Kirchengast, G.; Foelsche, U.; Steiner, A. K. (Eds.), Occultations for Probing Atmosphere and Climate, Springer, 383-393.
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Jakowski, N.; Wehrenpfennig, A.; Heise, S.; Reigber, C.; Lühr, H. (2003): Status of Ionospheric Radio Occultation CHAMP Data Analysis and Validation of Higher Level Data Products. - In: Reigber, Ch.; Lühr, H.; Schwintzer, P. (Eds.), First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies, Springer, 462-472.
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Heise, S.; Wickert, J.; Arras, C.; Beyerle, G.; Bender, M.; Chen, J.; Deng, Z.; Dick, G.; Falck, C.; Ge, M.; Gendt, G.; Faber, A.; Ramatschi, M.; Schmidt, T.; Semmling, M.; Stosius, R. (2012): GPS-basierte Atmosphärenfernerkundung am GFZ: Beobachtungsverfahren und Anwendungen. SORACAL-Meeting (Potsdam, Germany 2012).
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Schmidt, T.; Heise, S.; Michalak, G.; Beyerle, G.; Zus, F.; Wickert, J.; Faber, A.; de la Torre, A.; Alexander, P. (2012): Upper tropospheric and lower stratospheric variability observed with GPS radio occultation data since 2001: Results from CHAMP, GRACE, TerraSAR-X, and FORMOSAT-3/COSMIC. International Radio Occultation Working Group (IROWG) 2nd Workshop (Boulder 2012).
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Wickert, J.; Arras, C.; Bartsch, M.; Beyerle, G.; Bender, M.; Deng, Z.; Dick, G.; Falck, C.; Ge, M.; Gendt, G.; Heise, S.; Michalak, G.; Ramatschi, M.; Schmidt, T.; Semmling, M. (2012): GPS/Galileo Earth Observation at GFZ: Recent activities and results. International Symposium and Summer School on Space Geodesy and Earth System (SGES2012) (Shanghai, China 2012).
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Wickert, J.; Beyerle, G.; Falck, C.; Grunwaldt, L.; Heise, S.; Ramatschi, M.; Stege, S.; Schmidt, T.; Semmling, M.; Zus, F. (2012): GNSS radio occultation at GFZ: Recent results and activities related to future missions. Sixth FORMOSAT-3/COSMIC Data Users' Workshop (Boulder, Colorado 2012).
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Arras, C.; Jacobi, C.; Wickert, J.; Heise, S.; Schmidt, T. (2011): Global observation and analysis of sporadic E layers detected using GPS radio occultation measurements from CHAMP, GRACE and FORMOSAT-3/COSMIC. 5th FORMOSAT-3 / COSMIC Data User Workshop (Taipei, Taiwan 2011).
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Wickert, J.; Arras, C.; Bartsch, M.; Beyerle, G.; Bender, M.; Deng, Z.; Dick, G.; Falck, C.; Ge, M.; Gendt, G.; Heise, S.; Michalak, G.; Ramatschi, M.; Schmidt, T.; Semmling, M. (2011): GPS remote sensing: Recent results from GFZ. 25th IUGG General Assembly (Melbourne 2011).
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Wickert, J.; Arras, C.; Beyerle, G.; Bender, M.; Dick, G.; Ge, M.; Gendt, G.; Heise, S.; Schmidt, T.; Semmling, M.; Zus, F. (2011): GNSS based Earth Observation: Recent activities at GFZ. APSG Workshop on Space Geodesy and Its Applications for Geosciences and Space Exploitation (Melbourne, Australia 2011).
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Wickert, J.; Arras, C.; Beyerle, G.; Falck, C.; Flechtner, F.; Förste, C.; Grunwaldt, L.; Faber [Haser], A.; Heise, S.; Jakowski, N.; Köhler, W.; König, R.; Lühr, H.; Massmann, F.-H.; Meehan, T.; Michalak, G.; Reigber, C.; Schmidt, T.; Zus, F. (2011): In Memoriam CHAMP: The pathfinder for operational GPS radio occultation. 5th FORMOSAT-3 / COSMIC Data Users Workshop & ICGPSRO 2011 (Taipei, Taiwan 2011).
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Wickert, J.; Arras, C.; Beyerle, G.; Ge, M.; Flechtner, F.; Healy, S. B.; Heise, S.; Huan, C. Y.; Kuo, B.; Marquardt, C.; Michalak, G.; Jakowski, N.; Schmidt, T.; Semmling, M. (2011): Radio occultation with navigation satellites: Recent results and prospects with Galileo. 3rd Galileo Science Colloquium (Copenhagen 2011).
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Wickert, J.; Beyerle, G.; Arras, C.; Falck, C.; Faber [Haser], A.; Heise, S.; Grunwaldt, L.; Koehler, W.; König, R.; Massmann, F.-H.; Michalak, G.; Ramatschi, M.; Schmidt, T.; Zus, F. (2011): Global atmosphere sounding with TerraSAR-X GPS radio occultation: Status and recent results, Poster. 4th TerraSAR-X Science Team Meeting (Oberpfaffenhofen 2011).
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Zus, F.; Beyerle, G.; Heise, S.; Schmidt, T.; Wickert, J. (2011): Validation of refractivity profiles derived from METOP and TerraSAR-X open-loop data. 5th FORMOSAT-3 / COSMIC Data Users Workshop and International Conference on GPS Radio Occultation (ICGPSRO) (Taipei, Taiwan 2011).
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Arras, C.; Beyerle, G.; Faber [Haser], A.; Heise, S.; Michalak, G.; Schmidt, T.; Semmling, M.; Stosius, R.; Wickert, J.; Zus, F. (2010): Radio occultation at GFZ: Recent activities. GRAS-SAG Meeting, EUMETSAT (Darmstadt 2010).
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Heise, S.; Arras, C.; Beyerle, G.; Falck, C.; Faber [Haser], A.; Köhler, W.; Michalak, G.; Schmidt, T.; Wickert, J.; Zus, F. (2010): GPS radio occultation at GFZ: Status and recent results from GRACE. GRACE Science Team Meeting (Potsdam 2010).
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Schmidt, T.; Wickert, J.; Faber [Haser], A.; Heise, S. (2010): Variability of the upper troposphere and lower stratosphere observed with GPS radio occultation bending angles and temperatures. General Assembly European Geosciences Union (Vienna, Austria 2010).
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Wickert, J.; Arras, C.; Beyerle, G.; Faber [Haser], A.; Heise, S.; Michalak, G.; Schmidt, T.; Semmling, M.; Stosius, R.; Zus, F. (2010): GPS remote sensing: Recent results from GFZ. International Beacon Satellite Symposium (Barcelona 2010).
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Wickert, J.; Arras, C.; Beyerle, G.; Grunwaldt, L.; Faber [Haser], A.; Heise, S.; Michalak, G.; Schmidt, T.; Semmling, M.; Stosius, R.; Zus, F. (2010): GNSS radio occultation at GFZ: Recent results and activities. OPAC 2010 - Joint OPAC-4 & GRAS SAF Climate Workshop (Graz 2010).
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Beyerle, G.; Grunwaldt, L.; Heise, S.; Köhler, W.; Schmidt, T.; Choi, K.-R.; Michalak, G.; König, R.; Rothacher, M.; Wickert, J. (2009): First results from the GPS atmospheric remote sensing experiment TOR aboard TerraSAR-X. General Assembly European Geosciences Union (Vienna, Austria 2009).
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Chen, J.; Bender, M.; Beyerle, G.; Dick, G.; Falck, C.; Ge, M.; Gendt, G.; Heise, S.; Ramatschi, M.; Schmidt, T.; Stosius, R.; Wickert, J. (2009): GNSS Activities for Natural Disaster Monitoring and Climate Change Detection at GFZ. 2nd Conference on Earth Observation for Global Changes (EOGC2009) (Chengdu, China 2009).
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Heise, S.; Beyerle, G.; Grunwaldt, L.; Köhler, W.; Schmidt, T.; Choi, K.-R.; Michalak, G.; König, R.; Rothacher, M.; Wickert, J. (2009): First results from the GPS atmospheric remote sensing experiment TOR aboard TerraSAR-X. 24th Meeting of the ESA/EUMETSAT GNSS Receiver for Atmospheric Sounding Science Advisory Group (GRAS-SAG) (Darmstadt, Germany 2009).
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Schmidt, T.; de la Torre, A.; Heise, S.; Wickert, J. (2009): A global analysis of gravity wave activity in the upper troposphere and lower stratosphere region derived from GPS radio occultation data. IAMAS/IAPSO/IACS 2009 Joint Assembly (Montreal, Canada 2009).
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Schmidt, T.; Heise, S.; Wickert, J. (2009): Trends in the global tropopause estimated from CHAMP GPS radio occultation data. IAMAS/IAPSO/IACS 2009 Joint Assembly (Montreal, Canada, 2009).
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Schmidt, T.; Wickert, J.; Faber [Haser], A.; de la Torre, A.; Alexander, P.; Heise, S.; Beyerle, G. (2009): Observing the upper troposphere and lower stratosphere with GPS radio occultation data: Results from CHAMP, GRACE, TerraSAR-X, and FORMOSAT-3/COSMIC. 4th FORMOSAT-3/COSMIC Data Users Workshop ( Boulder, USA 2009).
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Wickert, J.; Arras, C.; Bender, M.; Beyerle, G.; Chen, J.; Dick, G.; Ge, M.; Heise, S.; Helm, A.; Rothacher, M.; Ramatschi, M.; Schmidt, T.; Stosius, R. (2009): GNSS atmosphere sounding at GFZ : Overview and recent results. International Technical Meeting on GNSS ( (ITM-GNSS) (Beijing 2009).
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Wickert, J.; Arras, C.; Bender, M.; Beyerle, G.; Deng, Z.; Dick, G.; Gendt, G.; Heise, S.; Michalak, G.; Ramatschi, M. (2009): Ground and space based GPS atmosphere sounding: recent results from GFZ. IAG 2009 Scientific Assembly 'Geodesy for Planet Earth' (Buenos Aires, Argentina 2009).
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Wickert, J.; Arras, C.; Brieß, K.; Beyerle, G.; Falck, C.; Grunwaldt, L.; Helm, A.; Herfort, M.; Heise, S.; Köhler, W.; Massmann, F. H.; Michalak, G.; Schmidt, T.; Stosius, R. (2009): GPS radio occultation at GFZ: Recent activities and plans. International Workshop GPS Radio Occultation, NASA/JPL (Pasadena 2009).
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Arras, C.; Wickert, J.; Jacobi, C.; Heise, S.; Beyerle, G.; Schmidt, T.; Rothacher, M. (2008): Sporadic E layer climatology derived from CHAMP, GRACE and COSMIC radio occultations – initial results from GFZ Potsdam. 12th International Symposium on Equatorial Aeronomy - ISEA (Heraklion, Crete, Greece 2008).
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Wickert, J.; Arras, C.; Ao, C. O.; Beyerle, G.; Falck, C.; Grunwaldt, L.; Healy, S. B.; Heise, S.; Helm, A.; Huang, C. Y.; Jakowski, N.; König, R.; Mannucci, T.; Mayer, C.; Michalak, G.; Rothacher, M.; Schmidt, T.; Stosius, R.; Tapley, B. (2008): Tapley CHAMP, GRACE, SAC-C, TerraSAR-X/Tandem-X, Science results, status and future prospects. ECMWF/GRAS SAF joint workshop on 'The assimilation of GPS radio-occultation (GPS RO) measurements', ECMWF (Reading, UK 2008).
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Wickert, J.; Arras, C.; Bender, M.; Beyerle, G.; Dick, G.; Heise, S.; Helm, A.; Schmidt, T.; Stosius, R.; Rothacher, M. (2008): Water vapor measurements using GPS: Recent activities at GFZ Potsdam. International PGGM-IAGOS Workshop (Taipeh 2008).
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Wickert, J.; Arras, C.; Beyerle, G.; Dick, G.; Heise, S.; Helm, A.; Ramatschi, M.; Schmidt, T.; Stosius, R.; Rothacher, M. (2008): GPS Atmosphere Sounding at GFZ: Overview and comparison of CHAMP data with MOZAIC. International PGGM-IAGOS Workshop (Taipeh 2008).
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Wickert, J.; Arras, C.; Beyerle, G.; Falck, C.; Grunwaldt, L.; Helm, A.; Heise, S.; Köhler, W.; König, R.; Michalak, G.; Ramatschi, M.; Rothacher, M.; Schmidt, T.; Stosius, R. (2008): GPS radio occultation: Recent results from GFZ. 4th Asian Space Conference (Taipeh 2008).
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Wickert, J.; Arras, C.; Beyerle, G.; Falck, C.; Grunwaldt, L.; Helm, A.; Heise, S.; Köhler, W.; König, R.; Michalak, G.; Ramatschi, M; Rothacher, M.; Schmidt, T.; Stosius, R. (2008): GPS radio occultation: Recent activities at GFZ. 4th Asian Space Conference & FORMOSAT-3/COSMIC International Workshop (Taipei, Taiwan 2008).
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Wickert, J.; Beyerle, G.; Arras, C.; Choi, K. R.; Falck, C.; Heise, S.; Grunwaldt, L.; Köhler, W.; Massmann, F. H.; Michalak, G.; Ramatschi, M.; Rothacher, M.; Schmidt, T.; Tapley, B. (2008): GPS radio occultation with TerraSAR-X: Introduction, status and initial results. 3rd TerraSAR-X Science Team Meeting (München 2008).
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Wickert, J.; Beyerle, G.; Arras, C.; Choij, K.R.; Falck, C.; Heise, S.; Grunwaldt, L.; Köhler, W.; König, R.; Massmann, F.-H.; Michalak, G.; Ramatschi, M.; Rothacher, M.; Tapley, B. (2008): GPS radio occultation with TerraSAR-X: Introduction, status and initial results. 2nd TerraSAR-X Science Meeting (Oberpfaffenhofen 2008).
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Helm, A.; Wickert, J.; Beyerle, G.; Schmidt, T.; Heise, S.; Stosius, R.; Sobolev, S. V.; Babeyko, A. Y.; Rothacher, M.; Yudanov, S.; Ashjaee, J.; Chen, R.; Rocken, C. (2007): New GNSS Remote Sensing Opportunities with ACES. ACES IWG Meeting (Paris 2007).
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Wickert, J.; Beyerle, G.; Cheng, F. Z.; Healy, S.; Heise, S.; Michalak, G.; Rocken, C.; Rothacher, M.; Schmidt, T.; Viehweg, C.; Tapley, B. (2007): Global atmospheric sounding using GPS radio occultation: Recent results from CHAMP, GRACE and COSMIC/FORMOSAT-3 (solicited). General Assembly European Geosciences Union (EGU) (Vienna, Austria 2007).
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Wickert, J.; Michalak, G.; Schmidt, T.; Beyerle, G.; Falck, C.; Galas, R.; Heise, S.; Healy, S.; Viehweg, C.; Flechtner, F.; Grunwaldt, L.; Köhler, W.; König, R.; Massmann, F.-H.; Offiler, D.; Rhodin, A.; Reigber, C.; Rothacher, M.; Tapley, B. (2007): GPS radio occultation: Operational sounding of the atmosphere with GRACE. General Assembly European Geosciences Union (EGU) (Vienna, Austria 2007).
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Wickert, J.; Michalak, G.; Schmidt, T.; Beyerle, G.; Falck, C.; Heise, S.; Viehweg, C.; Flechtner, F.; Grunwaldt, L.; Köhler, W.; König, R.; Massmann, F.-H.; Pingel, D.; Rothacher, M.; Tapley, B. (2007): GPS radio occultation with GRACE: Recent results from GFZ. Joint International GSTM and DFG SPP Symposium (Potsdam 2007).
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Schmidt, T.; Beyerle, G.; Heise, S.; Wickert, J.; Rothacher, M. (2006): Global climatologies of multiple tropopauses and gravity wave activity in the lower stratosphere with a five year GPS radio occultation data set from CHAMP. COST 723 Final Workshop (Sofia, Bulgaria 2006).
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Wickert, J.; Beyerle, G.; Cheng, F.; Healy, S. B.; Heise, S.; Huang, C. Y.; Michalak, G.; Offiler, D.; Rothacher, M.; Schmidt, T.; Viehweg, Ch.; Tapley, B. (2006): GPS radio occultation: News from CHAMP and GRACE, initial results from COSMIC/Formosat-3 data analysis. AGU 2006 Fall Meeting (San Francisco, USA 2006).
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Wickert, J.; Beyerle, G.; Falck, C.; Flechtner, F.; Galas, R.; Grunwaldt, L.; Healy, S.; Heise, S.; Köhler, W.; König, R.; Massmann, F.-H.; Michalak, G.; Offiler, D.; Rhodin, A.; Rothacher, M.; Schmidt, T.; Wergen, W. (2006): Global atmospheric data from CHAMP and GRACE in near-real time. GEOTECHNOLOGIEN Statusseminar 'Observation the system Earth from Space' (Bonn 2006).
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Wickert, J.; Beyerle, G.; Heise, S.; Schmidt, T.; Michalak, G.; König, R.; Jakowski, N.; Rothacher, M.; Typley, B. (2006): GPS radio occultation with CHAMP and GRACE: Overview, recent results and outlook to Metop. First EPS/MetOp RAO Workshop (Frascati, Italy 2006).
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Wickert, J.; Michalak, G.; Schmidt, T.; Beyerle, G.; Heise, S.; Viehweg, C.; Cheng, C. Z.; Flechtner, F.; Grunwaldt, L.; Healy, S.; König, R.; Massmann, F.-H.; Offiler, D.; Rhodin, A.; Reigber, C.; Rothacher, M.; Tapley, B. (2006): Global atmospheric data from GRACE: First results and status. GRACE Science Team Meeting (San Francisco, USA 2006).
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Wickert, J.; Michalak, G.; Schmidt, T.; Beyerle, G.; Heise, S.; Viehweg, Ch.; Aparicio, J.; Cheng, C. Z.; Healy, S. B.; Huang, C. Y.; Ozawa, E.; Offiler, D.; Rothacher, M.; Tapley, B. (2006): GPS radio occultation: Overwiev on CHAMP and GRACE results. FORMASAT-3/COSMIC-Workshop (Taipei, Taiwan 2006).
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Wickert, J.; Schmidt, T.; Michalak, G.; Healy, S. B.; Beyerle, G.; Falck, C.; Galas, R.; Heise, S.; Köhler, W.; Rothacher, M.; Offiler, D.; Wergen, W. (2006): GPS based atmospheric sounding with CHAMP: near real time provision of occultation data for numerical weather prediction. 3rd General Assembly European Geosciences Union (Vienna, Austria 2006).
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Stolle, C.; Schlüter, S.; Heise, S. (2005): The contribution of occultation data added to ground-based GPS observations to ionospheric 3D imaging. 2nd General Assembly European Geosciences Union (Vienna, Austria 2005).
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Vespe, F.; Wickert, J.; Heise, S.; Persia, T.; Pacione, R. (2005): Validation of the BPV (n,á) method for the retrieval of Atmosphere Refractivity and Water Vapour Content by Radio Occultation Data. 2nd General Assembly European Geosciences Union (Vienna, Austria 2005).
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Wickert, J.; Beyerle, G.; Schmidt, T.; Heise, S.; Jakowski, N.; König, R.; Rothacher, M.; Healy, S. B.; Offiler, D.; Wergen, W. (2005): GPS based atmospheric sounding with CHAMP: Recent GFZ activities and results. Second GPS RO Data Users Workshop (Lansdowne, Virginia 2005).
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Wickert, J.; Schmidt, T.; Beyerle, G.; Heise, S.; Flechtner, F.; Galas, R.; Grunwaldt, L.; König, R.; Massmann, F.-H.; Meehan, T.; Reigber, C.; Rothacher, M.; Tapley, B. (2005): GPS radio occultation with CHAMP and GRACE: Preliminary results. GRACE Science Team Meeting ( Austin, Texas 2005).
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Heise, S.; Jakowski, N. (2004): Ionosphere/plasmasphere imaging based on GPS TEC data from CHAMP and SAC-C. Joint CHAMP/GRACE Science Meeting (Potsdam 2004).
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Jakowski, N.; Tsybulya, K.; Heise, S.; Beniguel, Y. (2004): Ionospheric irregularities detected by radio occultation measurements onboard CHAMP. 2nd ESA Workshop on Satellite Navigation User Equipment Technologies NAVITEC, ESTEC (Noordwijk, Netherlands 2004).
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Wickert, J.; Gendt, G.; Reigber, C.; Beyerle, G.; Dick, G.; Heise, S.; Jacobi, C.; Ramatschi, M.; Rhodin, A.; Schmidt, T.; Tomassini, M.; Wergen, W. (2004): Boden- und satellitengestützte GPS-Meteorologie in Deutschland: Ergebnisse und Ausblick. DACH Meteorologentagung (Karlsruhe 2004).
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Wickert, J.; Schmidt, T.; Beyerle, G.; Jakowski, N.; Heise, S.; Reigber, C.; König, R. (2004): GPS based atmosphere sounding with CHAMP: Overview, results and future prospects. 7th Latin-American Conference on Space Geophysics (Atibaia, São Paulo, Brazil).
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Wickert, J.; Schmidt, T.; Beyerle, G.; Reigber, C.; Grunwaldt, L.; König, R.; Galas, R.; Heise, S.; Ramatschi, M. (2004): Three years of space based atmosphere sounding with CHAMP: Results, highlights and future prospects. Joint CHAMP/GRACE Science Meeting (Potsdam 2004).
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Wickert, J.; Arras, C.; Bender, M.; Beyerle, G.; Chen, J.; Dick, G.; Ge, M.; Heise, S.; Helm, A.; Rothacher, M.; Ramatschi, M.; Schmidt, T.; Stosius, R. (2009): GNSS atmosphere sounding at GFZ: Overview and recent results.
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Wickert, J.; Arras, C.; Bender, M.; Beyerle, G.; Dick, G.; Heise, S.; Helm, A.; Ramatschi, M.; Rothacher, M.; Schmidt, T.; Stosius, R. (2008): GNSS Atmosphere Sounding: Recent activities at GFZ Potsdam.
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Wickert, J.; Arras, C.; Bender, M.; Beyerle, G.; Dick, G.; Heise, S.; Helm, A.; Ramatschi, M.; Schmidt, T.; Stosius, R.; Rothacher, M. (2008): GNSS Atmosphere Sounding: Recent activities at GFZ Potsdam.
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Wickert, J.; Arras, C.; Bender, M.; Beyerle, G.; Dick, G.; Heise, S.; Helm, A.; Ramatschi, M.; Schmidt, T.; Stosius, R.; Rothacher, M. (2008): GPS Atmosphere Sounding at GFZ: Overview and recent activities.
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Wickert, J.; Arras, C.; Bender, M.; Beyerle, G.; Dick, G.; Heise, S.; Helm, A.; Schmidt, T.; Stosius, R.; Rothacher, M. (2008): GNSS Atmosphere Sounding: Recent activities at GFZ Potsdam.
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Wickert, J.; Bender, M.; Beyerle, G.; Dick, G.; Gendt, G.; Grunwaldt, L.; Heise, S.; Helm, A.; Michalak, G.; Rothacher, M.; Schmidt, T.; Stosius, R.; Viehweg, Ch. (2007): GNSS atmospheric sounding and reflectometry.
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Wickert, J.; Beyerle, G.; Dick, G.; Gendt, G.; Heise, S.; Helm, A.; Michalak, G.; Rothacher, M.; Schmidt, T.; Stosius, R.; Viehweg, Ch. (2006): Atmospheric sounding and reflectometry with GNSS.
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Wickert, J.; Beyerle, G.; Dick, G.; Gendt, G.; Heise, S.; Helm, A.; Michalak, G.; Schmidt, T.; Viehweg, C. (2006): GNSS basierte Fernerkundung: Visionen, Ideen und Fragen.
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