Inhaltsbereich

Publications

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(Co) Author: Michalak, G.

(since 2008) [ All ]

Paper (ISI journals)

2012

Jäggi, A.; Montenbruck, O.; Moon, Y.; Wermuth, M.; König, R.; Michalak, G.; Bock, H.; Bodenmann, D. (2012): Inter-agency comparison of TanDEM-X baseline solutions. Advances in Space Research, 50, 2, 260-271.
| EDOC: 18884 | 10.1016/j.asr.2012.03.027 |

2011

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.
| EDOC: 16379 | Abstract | 10.5194/acp-11-6687-2011 | www.atmos-chem-phys.net/11/6687/2011 |

2009

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.
| EDOC: 13109 | 10.3319/TAO.2007.12.26.01(F3C) |

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Chapter in Book

2010

Michalak, G.; König, R. (2010): Improvements for the CHAMP and GRACE Observation Model. - In: Flechtner, F.; Gruber, T.; Güntner, A.; Mandea, M.; Rothacher, M.; Schöne, T.; Wickert, J. (Eds.), System Earth via Geodetic-Geophysical Space Techniques, Springer, 29-39.
| EDOC: 16008 | 10.1007/978-3-642-10228-8_3 |

Michalak, G.; König, R. (2010): Near-Real Time Satellite Orbit Determination for GPS Radio Occultation with CHAMP and GRACE. - In: Flechtner, F.; Gruber, T.; Güntner, A.; Mandea, M.; Rothacher, M.; Schöne, T.; Wickert, J. (Eds.), System Earth via Geodetic-Geophysical Space Techniques, Springer, 443-454.
| EDOC: 16010 | 10.1007/978-3-642-10228-8_39 |

Michalak, G.; König, R. (2010): Rapid Science Orbits for CHAMP and GRACE Radio Occultation Data Analysis. - In: Flechtner, F.; Gruber, T.; Güntner, A.; Mandea, M.; Rothacher, M.; Schöne, T.; Wickert, J. (Eds.), System Earth via Geodetic-Geophysical Space Techniques, Springer, 67-77.
| EDOC: 16009 | 10.1007/978-3-642-10228-8_6 |

Schmidt, T.; Wickert, J.; Michalak, G. (2010): The operational processing system for GPS radio occultation data from CHAMP and GRACE. - In: Flechtner, F.; Gruber, T.; Güntner, A.; Mandea, M.; Rothacher, M.; Schöne, T.; Wickert, J. (Eds.), System Earth via Geodetic-Geophysical Space Techniques, Springer, 455-460.
| EDOC: 15062 | 10.1007/978-3-642-10228-8 |

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.
| EDOC: 15060 |

2009

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.
| EDOC: 13375 |

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Conference Paper

2012

Dahle, C.; Flechtner, F.; Gruber, C.; König, D.; König, R.; Michalak, G.; Neumayer, K.-H. (2012): The New GFZ RL05 GRACE Gravity Field Model Time Series. General Assembly European Geosciences Union (Vienna, Austria 2012).
| EDOC: 18890 |

Dahle, C.; Flechtner, F.; König, D.; König, R.; Michalak, G.; Neumayer, K.-H. (2012): Consistent Reprocessing of GRACE mission data at GFZ. Statusseminar Geotechnologien 'Weltraum Phase III' (Potsdam 2012).
| EDOC: 18889 |

Heise, S.; Beyerle, G.; Grunwaldt, G.; Michalak, G.; Schmidt, T.; Wickert, J.; Zus, F. (2012): Processing and application of GPS radio occultation data from TerraSAR-X and TanDEM-X. General Assembly European Geosciences Union (Vienna, Austria 2012).
| EDOC: 18844 |

Heise, S.; Wickert, J.; Arras, C.; Beyerle, G.; Faber, A.; Michalak, G.; Schmidt, T.; Zus, F. (2012): Reprocessing and application of GPS radio occultation data from CHAMP and GRACE. Statusseminar Geotechnologien 'Weltraum Phase III' (Potsdam 2012).
| EDOC: 19831 |

König, D.; Dahle, C.; Michalak, G. (2012): The integrated Approach: Status and Update. Statusseminar Geotechnologien 'Weltraum Phase III' (Potsdam 2012).
| EDOC: 18899 |

Michalak, G.; König, D.; Dahle, C.; Neumayer, K.-H. (2012): Improvement in GPS Orbit Determination at GFZ within GEOTECHNOLOGIEN. Statusseminar Geotechnologien 'Weltraum Phase III' (Potsdam 2012).
| EDOC: 18901 |

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).
| EDOC: 19829 |

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).
| EDOC: 19199 |

Zus, F.; Beyerle, G.; Grunwaldt, L.; Heise, S.; Michalak, G.; Schmidt, T.; Wickert, J. (2012): Processing of GPS radio occultation data from TerraSAR-X and TanDEM-X. Sixth FORMOSAT-3/COSMIC Data Users' Workshop (Boulder, Colorado 2012).
| EDOC: 19805 |

2011

Heise, S.; Beyerle, G.; Michalak, G.; Schmidt, T.; Wickert, J.; Zus, F. (2011): GPS radio occultation at GFZ: Status and recent results from TerraSAR-X and TanDEM-X. General Assembly European Geosciences Union (Vienna, Austria 2011).
| EDOC: 17361 |

Heise, S.; Wickert, J.; Arras, C.; Beyerle, G.; Faber, A.; Michalak, G.; Schmidt, T.; Zus, F. (2011): Applications of atmospheric data from GPS Radio Occultation. BMBF Geotechnologien Statusseminar 2011'Erfassung des Systems Erde aus dem Weltraum III'(Stuttgart 2011).
| EDOC: 19828 |

Heise, S.; Wickert, J.; Arras, C.; Beyerle, G.; Faber, A.; Michalak, G.; Schmidt, T.; Zus, F. (2011): Reprocessing and application of GPS radio occultation data from CHAMP and GRACE. BMBF Geotechnologien Statusseminar 2011 'Erfassung des Systems Erde aus dem Weltraum III' (Stuttgart 2011).
| EDOC: 19827 |

König, D.; Dahle, C.; Michalak, G. (2011): The Integrated Approach: Status and Results. BMBF Statusseminar 2011 - Weltraum Phase III (Stuttgart 2011).
| EDOC: 18049 |

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).
| EDOC: 17376 |

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).
| EDOC: 17212 |

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).
| EDOC: 17381 |

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).
| EDOC: 16962 |

2010

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).
| EDOC: 15032 |

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).
| EDOC: 16420 |

Heise, S.; Wickert, J.; Arras, C.; Beyerle, G.; Faber [Haser], A.; Michalak, G.; Schmidt, T.; Zus, F. (2010): GPS radio occultation at GFZ: processing and application. BMBF Geotechnologien Statusseminar: 'Erfassung des Systems Erde aus dem Weltraum III' (Bonn 2010).
| EDOC: 16408 |

Heise, S.; Wickert, J.; Arras, C.; Beyerle, G.; Michalak, G.; Schmidt, T.; Zus, F. (2010): GPS Radio Occultation with CHAMP and GRACE: Climatological applications. BMBF Geotechnologien Statusseminar: 'Erfassung des Systems Erde aus dem Weltraum III' (Bonn 2010).
| EDOC: 16410 |

Michalak, G.; König, R. (2010): Near-Real Time Orbit Determination for the GPS, CHAMP, GRACE, TerraSAR-X, and TanDEM-X satellites. 38th COSPAR Scientific Assembly (Bremen 2010).
| EDOC: 16017 |

Schmidt, T.; Heise, S.; Zus, F.; Michalak, G.; Beyerle, G.; Wickert, J.; Faber [Haser], A. (2010): Variability of the upper troposphere and lower stratosphere observed with GPS radio occultation temperatures. GRACE Science Team Meeting (Potsdam 2010).
| EDOC: 16423 |

Schmidt, T.; Heise, S.; Zus, F.; Michalak, G.; Beyerle, G.; Wickert, J.; Faber [Haser], A. (2010): Variability of the upper troposphere and lower stratosphere observed with GPS radio occultation temperatures. AGU 2010 Fall Meeting (San Francisco 2010).
| EDOC: 16494 |

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).
| EDOC: 15021 |

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).
| EDOC: 16067 |

2009

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).
| EDOC: 13381 |

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).
| EDOC: 14694 |

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).
| EDOC: 13822 |

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).
| EDOC: 13386 |

2008

König, R.; Rothacher, M.; Michalak, G.; Moon, Y. (2008): Precise determination of the baseline between the TerraSAR-X and TanDEM-X satellites. 37th COSPAR Scientific Assembly (Montreal 2008).
| EDOC: 11301 |

Moon, Y.; König, R.; Michalak, G.; Rothacher, M.; Tapley, B. (2008): Precise orbit and baseline determination for TerraSAR-X and TanDEM-X. 2008 IEEE International Geoscience & Remote Sensing Symposium - IGARSS (Boston 2008).
| EDOC: 11302 |

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).
| EDOC: 11575 |

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).
| EDOC: 13296 |

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).
| EDOC: 12173 |

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).
| EDOC: 13295 |

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).
| EDOC: 12172 |

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Report

2013

Dahle, C.; Flechtner, F.; Gruber, C.; König, D.; König, R.; Michalak, G.; Neumayer, K.-H. (2013): GFZ GRACE Level-2 Processing Standards Document for Level-2 Product Release 0005 : revised edition, January 2013. Scientific Technical Report - Data ; 12/02, Deutsches GeoForschungsZentrum GFZ, 21.
| EDOC: 20078 | 10.2312/GFZ.b103-1202-25 | ebooks.gfz-potsdam.de/pub... |

2012

Dahle, C.; Flechtner, F.; Gruber, C.; König, D.; König, R.; Michalak, G.; Neumayer, K.-H. (2012): GFZ GRACE Level-2 Processing Standards Document for Level-2 Product Release 0005. Scientific Technical Report - Data ; 12/02, Deutsches GeoForschungsZentrum GFZ, 20.
| EDOC: 18309 | 10.2312/GFZ.b103-12020 | ebooks.gfz-potsdam.de/pub... |

Moreno-Monge, B.; Michalak, G.; König, R. (2012): WP 2100. GPS Time Series. REGAL Project Report.
| EDOC: 18443 |

Moreno-Monge, B.; Michalak, G.; König, R. (2012): WP 2200. Galileo Orbits and Data Simulation with EPOS-OC. REGAL Project Report.
| EDOC: 18908 |

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