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Publications
Helmholtz Centre Potsdam
GFZ German Research Centre for Geosciences
(Co) Author: Köhler, W.
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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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Köhler, W. (2011): Matrix theory of gravitation. General Relativity and Gravitation, 43, 6, 1787-1825.
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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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Häusler, K.; Lühr, H.; Rentz, S.; Köhler, W. (2007): A statistical analysis of longitudinal dependences of upper thermospheric zonal winds at dip equator latitudes derived from CHAMP. Journal of Atmospheric and Solar-Terrestrial Physics, 69, 12, 1419-1430.
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Liu, H.; Lühr, H.; Watanabe, S.; Köhler, W.; Henize, V.; Visser, P. (2006): Zonal winds in the equatorial upper thermosphere: Decomposing the solar flux, geomagnetic activity, and seasonal dependencies. Journal of Geophysical Research, 111, A07307.
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Liu, H.; Lühr, H.; Henize, V.; Köhler, W. (2005): Global distribution of the thermospheric total mass density derived from CHAMP. Journal of Geophysical Research, 110, A4, A04301.
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Galas, R.; Köhler, W. (2001): A binary exchange format for GPS data. Physics and Chemistry of the Earth (A), 26, 6-8, 645-648.
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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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Neumayer, K.-H.; Flechtner, F.; König, R.; Michalak, G.; Snopek, K.; Köhler, W. (2007): Optimized Algorithms and Methods for Improved CHAMP and GRACE Gravity Fields. Observations of the System Earth from Space : status seminar, 22 - 23 November 2007, Bavarian Academy of Sciences and Humanities, Munich; Programme & Abstracts, Koordinierungsbüro GEOTECHNOLOGIEN, 12-17.
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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.; 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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Barthelmes, F.; Köhler, W. (2010): ICGEM - a Web Based Service for Using Global Earth Gravity Field Models. IAG Symposium on Terrestrial Gravimetry: Static and Mobile Measurements (TG-SMM2010) (Saint Petersburg, Russia 2010).
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Barthelmes, F.; Köhler, W. (2010): ICGEM - the International Centre for Global Earth Models. 2nd International Symposium of the International Gravity Field Service (Fairbanks, Alaska 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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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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Falck, C.; Ramatschi, M.; Bartsch, M.; Merx, A.; Hoeberechts, J.; Schmidt, G.; Chen, J.; Ge, M.; Dousa, J.; Köhler, W. (2009): The GNSS-based component for the new Indonesian tsunami early warning centre provided by GITEWS. 3rd annual conference Space Systems and Security (Potsdam 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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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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Barthelmes, F.; Köhler, W.; Kusche, J. (2008): ICGEM The International Centre for Global Earth Models. Observing and Forecasting the Ocean GODAE Final Symposium (Nice, France 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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Barthelmes, F.; Köhler, W.; Kusche, J. (2007): ICGEM - The International Centre for Global Earth Models. General Assembly European Geosciences Union (EGU) (Vienna, Austria 2007).
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Häusler, K.; Lühr, H.; Liu, H.; Rentz, S.; Köhler, W. (2007): Longitudinal dependences of thermospheric zonal winds at dip equator latitudes derived from CHAMP. The International Symposium on Coupling Processes in the Equatorial Atmosphere (CPEA Symposium) (Kyoto, Japan 2007).
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Häusler, K.; Lühr, H.; Rentz, S.; Köhler, W. (2007): Longitudinal dependences of thermospheric zonal winds at dip equator latitudes as derived from CHAMP. 24th IUGG 2007 (Perugia, Italy 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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Barthelmes, F.; Köhler, W. (2006): The International Centre for Global Earth Models (ICGEM). 3rd General Assembly European Geosciences Union (Vienna, Austria 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.; 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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Köhler, W. (2001): CHAMP RINEX format observable extensions for CHAMP SST Data. GeoForschungsZentrum, 1.
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Falck, C.; Ramatschi, M.; Bartsch, M.; Merx, A.; Hoeberechts, J.; Schmidt, G.; Chen, J.; Ge, M.; Dousa, J.; Köhler, W. (2010): GNSS technology for tsunami early warning.
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Falck, C.; Ramatschi, M.; Bartsch, M.; Merx, A.; Hoeberechts, J.; Schmidt, G.; Chen, J.; Ge, M.; Dousa, J.; Köhler, W. (2009): GPS sensor application for tsunami early warning systems.
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