First CHAMP Mission Results for Gravity, Magnetic and Atmospheric Studies

Front Matter....Pages I-XIII
Front Matter....Pages 1-1
CHAMP Orbit and Gravity Instrument Status....Pages 3-10
On Board Evaluation of the STAR Accelerometer....Pages 11-18
Determination of CHAMP Accelerometer Calibration Parameters....Pages 19-25
CHAMP Accelerometer and Star Sensor Data Combination....Pages 26-31
CHAMP Clock Error Characterization....Pages 32-37
Determination of the Offset of CHAMP GPS Antenna with Respect to Satellite’s Mass Center....Pages 38-41
Spaceborne GPS for POD and Earth Science....Pages 42-52
The CHAMP Orbit Comparison Campaign....Pages 53-58
CHAMP Orbit Determination with GPS Phase-Connected Precise Point Positioning....Pages 59-64
Kinematic and Dynamic Determination of Trajectories for Low Earth Satellites Using GPS....Pages 65-69
CHAMP Double-Difference Kinematic POD with Ambiguity Resolution....Pages 70-77
Approaches to CHAMP Precise Orbit Determination....Pages 78-84
STAR Accelerometer Contribution to Dynamic Orbit and Gravity Field Model Adjustment....Pages 85-91
Impact of different data combinations on the CHAMP orbit determination....Pages 92-97
CHAMP Rapid Science Orbit Determination — Status and Future Prospects....Pages 98-103
Orbit Predictions for CHAMP — Development and Status....Pages 104-111
Thermospheric events in CHAMP Precise Orbit Determination....Pages 112-119
New Global Gravity Field Models from Selected CHAMP Data Sets....Pages 120-127
First insight into temporal gravity variablility from CHAMP....Pages 128-133
CHAMP Gravity Field Recovery with the Energy Balance Approach: First Results....Pages 134-139
Front Matter....Pages 1-1
Preliminary Analysis of CHAMP State Vector and Accelerometer Data for the Recovery of the Gravity Potential....Pages 140-145
CHAMP Precise Orbit Determination and Gravity Field Recovery....Pages 146-152
Gravitational Field Modelling From CHAMP-Ephemerides by Harmonic Splines and Fast Multipole Techniques....Pages 153-158
Evaluation of Geoid Models with GPS/Levelling Points in Sweden and Finland....Pages 159-164
Geophysical Impact of Field Variations....Pages 165-173
CHAMP, Mass Displacements, and the Earth’s Rotation....Pages 174-179
CHAMP Gravity Anomalies over Antarctica....Pages 180-186
Assimilation of Altimeter and Geoid Data into a Global Ocean Model....Pages 187-192
Total density retrieval with STAR....Pages 193-199
Front Matter....Pages 201-201
CHAMP ME Data Processing and Open Issues....Pages 203-211
Ion Drift-Meter Status and Calibration....Pages 212-219
CO2 — A Champ Magnetic Field Model....Pages 220-225
Decadal and Subdecadal Secular Variation of Main Geomagnetic Field....Pages 226-232
Modelling the Earth’s Magnetic Field: Wavelet based and Standard Methods....Pages 233-238
Improved Parameterization of External Magnetic Fields from CHAMP Measurements....Pages 239-244
Monitoring Magnetospheric Contributions using Ground-Based and Satellite Magnetic Data....Pages 245-250
Unraveling the Magnetic Mystery of the Earth’s Lithosphere: The Background and the Role of the CHAMP Mission....Pages 251-260
A Comparison of Global Lithospheric Field Models Derived from Satellite Magnetic Data....Pages 261-268
Mapping the Lithospheric Magnetic Field from CHAMP Scalar and Vector Magnetic Data....Pages 269-274
Improving the Definition of Cratonic Boundaries Utilizing the Lithospheric Magnetic Field derived from CHAMP Observations....Pages 275-280
Front Matter....Pages 201-201
Crustal Magnetisation Distribution Deduced from CHAMP Data....Pages 281-287
Multiscale Downward Continuation of CHAMP FGM-Data for Crustal Field Modelling....Pages 288-295
CHAMP Enhances Utility of Satellite Magnetic Observations to Augment Near-Surface Magnetic Survey Coverage....Pages 296-301
Comparing Magsat, Ørsted and CHAMP crustal Magnetic Anomaly Data over the Kursk Magnetic Anomaly, Russia....Pages 302-308
CHAMP, Ørsted, and Magsat Magnetic Anomalies of the Antarctic Lithosphere....Pages 309-314
Separation of External Magnetic Signal for Induction Studies....Pages 315-320
Two-dimensional Spatiotemporal Modelling of Satellite Electromagnetic Induction Signals....Pages 321-327
Night-time Ionospheric Currents....Pages 328-338
Multiscale Determination of Radial Current Distribution from CHAMP FGM-Data....Pages 339-346
Ionospheric Currents from CHAMP Magnetic Field Data — Comparison with Ground Based Measurements....Pages 347-352
Mapping of Field-Aligned Current Patterns during Northward IMF....Pages 353-360
Field-aligned Currents Inferred from Low-Altitude Earth-Orbiting Satellites and Ionospheric Currents Inferred from Ground-Based Magnetometers — Do They Render Consistent Results?....Pages 361-368
Front Matter....Pages 369-369
GPS Radio Occultation with CHAMP....Pages 371-383
Validation and Data Quality of CHAMP Radio Occultation Data....Pages 384-396
Global Climate Monitoring based on CHAMP/GPS Radio Occultation Data....Pages 397-407
Initial Results on Ionosphere/Plasmasphere Sounding based on GPS Data Obtained On Board CHAMP....Pages 408-414
Backpropagation Processing of GPS Radio Occultation Data....Pages 415-422
Combination of NOAA16/ATOVS Brightness Temperatures and the CHAMP Data to get Temperature and Humidity Profiles....Pages 423-429
An Improvement of Retrieval Techniques for Ionospheric Radio Occultations....Pages 430-440
Validation of Water Vapour Profiles from GPS Radio Occultations in the Arctic....Pages 441-446
Front Matter....Pages 369-369
Comparison of DMI Retrieval of CHAMP Occultation Data with ECMWF....Pages 447-452
The Assimilation of Radio Occultation Measurements....Pages 453-461
Status of Ionospheric Radio Occultation CHAMP Data Analysis and Validation of Higher Level Data Products....Pages 462-472
NWP Model Specific Humidities Compared with CHAMP/GPS and TERRA/MODIS Data....Pages 473-478
Analysis of Gravity Waves from Radio Occultation Measurements....Pages 479-484
GPS Atmosphere and Ionosphere Methods used on Ørsted Data and Initial Application on CHAMP Data....Pages 485-490
Combining Radio Occultation Measurements with Other Instruments to Map the Ionospheric Electron Concentration....Pages 491-499
Vertical Gradients of Refractivity in the Mesosphere and Atmosphere Retrieved from GPS/MET and CHAMP Radio Occultation Data....Pages 500-507
Observation of Reflected Signals in MIR/GEO and GPS/MET Radio Occultation Missions....Pages 508-514
Assimilation Experiments of One-dimensional Variational Analyses with GPS/MET Refractivity....Pages 515-520
Monitoring the 3 Dimensional Ionospheric Electron Distribution based on GPS Measurements....Pages 521-527
Comparison of Three Different Meteorological Datasets (ECMWF, Met Office and NCEP)....Pages 528-535
Radio Occultation Data Processing at the COSMIC Data Analysis and Archival Center (CDAAC)....Pages 536-544
Verification of CHAMP Radio-Occultation Observations in the Ionosphere Using MIDAS....Pages 545-550
Approach to the Cross-Validation of MIPAS and CHAMP Temperature and Water Vapour Profiles....Pages 551-556
Back Matter....Pages 557-563