Earth Observation with CHAMP (eBook)

PREFACE 5
Table of Contents 7
Orbit and Earth Gravity Field 18
Ice Mass Balance and Antarctic Gravity Change: Satellite and Terrestrial Perspectives 19
Gravity Model TUM-2Sp Based on the Energy Balance Approach and Kinematic CHAMP Orbits 29
On the Contribution of CHAMP to Temporal Gravity Field Variation Studies 35
Evaluation of Terrestrial Gravity Data by Independent Global Gravity Field Models 75
Recent Developments in CHAMP Orbit Determination at GFZ 81
On Calibrating the CHAMP On-Board Accelerometer and Attitude Quaternion Processing 87
Comparison of Different Stochastic Orbit Modeling Techniques 105
Determination of Non-Conservative Accelerations from Orbit Analysis 111
Application of Eigenvalue Decomposition in the Parallel Computation of a CHAMP 100x100 Gravity Field 131
Time-Variable Gravity Seen by Satellite Missions: On its Sampling and its Parametrization 137
Statistical Assessment of CHAMP Data and Models Using the Energy Balance Approach 149
Multiscale Geopotential Solutions from CHAMP Orbits and Accelerometry 155
Multiscale Modeling from EIGEN-1S, EIGEN-2, EIGEN- GRACE01S, UCPH2002_0.5, EGM96 161
A Comparison of Various Procedures for Global Gravity Field Recovery from CHAMP Orbits 167
Precise Orbit Determination for CHAMP Using an Efficient Kinematic and Reduced- Dynamic Procedure 173
On Bias and Scale and Thrust Factors for CHAMP Accelerometry 179
CHAMP Clock Characterization Revisited 191
How Baltic Sea Water Mass Variations Mask the Postglacial Rebound Signal in CHAMP and GRACE Gravity Field Solutions 197
The Impact of the New CHAMP and GRACE Gravity Models on the Measurement of the General Relativistic Lense– Thirring Effect 203
Recovery of Isostatic Topography over North America from Topographic and CHAMP Gravity Correlations 209
Impact of the CHAMP Mission on Estimating the Mean Sea Surface 221
Improved Estimates of the Oceanic Circulation Using the CHAMP Geoid 227
Contemporary Changes in the Geoid About Greenland: Predictions Relevant to Gravity Space Missions 233
Mantle Viscosity and S-Wave to Density Conversion Profiles using CHAMP Geoid Data 239
Earth Magnetic Field 254
Ionospheric Plasma Effects for Geomagnetic LEO Missions at Mid- and Low- Latitudes 255
Magnetic Crustal Thickness in Greenland from CHAMP and Ørsted Data 271
Introducing POMME, the POtsdam Magnetic Model of the Earth 309
New Insight into Secular Variation Between MAGSAT and CHAMP/ ØRSTED 321
Time Structure of the 1991 Magnetic Jerk in the Core- Mantle Boundary Zone by Inverting Global Magnetic Data Supported by Satellite Measurements 327
The Spectrum of the Magnetic Secular Variation 345
Electromagnetic Induction by Sq Ionospheric Currents in a Heterogeneous Earth: Modeling Using Ground- based and Satellite Measurements 357
Wavelet Analysis of CHAMP Flux Gate Magnetometer Data 363
Modelling the Ocean Effect of Geomagnetic Storms at Ground and Satellite Altitude 369
The Enhancement of the Thermospheric Density During the Sept. 25– 26, 2001 Magnetic Storm 382
On the Modelling of Field-Aligned Currents from Magnetic Observations by Polar Orbiting Satellites 387
The Low-Altitude Cusp: Multi-Point Observations During the February 2002 SIRCUS Campaign 391
Detection of Intense Fine-Scale Field-Aligned Current Structures in the Cusp Region 397
Status of the CHAMP ME Data Processing 429
Neutral Atmosphere and Ionosphere 436
Ionospheric Tomography with GPS Data from CHAMP and SAC- C 469
Differential Code Bias of GPS Receivers in Low Earth Orbit: An Assessment for CHAMP and SAC- C 481
Ionosphere/Plasmasphere Imaging Based on GPS Navigation Measurements from CHAMP and SAC- C 487
Three-Dimensional Monitoring of the Polar Ionosphere with Ground- and Space- Based GPS 493
Model for Short-term Atmospheric Density Variations 505
Atmospheric Profiling with CHAMP: Status of the Operational Data Analysis, Validation of the Recent Data Products and Future Prospects 511
Simulated Temperature and Water Vapor Retrieval from Bending Angles and Refractivity Measurements using an Optimal Estimation Approach 517
An Analysis of the Lower Tropospheric Refractivity Bias by Heuristic Sliding Spectral Methods 523
Canonical Transform Methods for Analysis of Radio Occultations 535
GPS Radio Occultation with CHAMP: Comparison of Atmospheric Profiles from GFZ Potsdam and IGAM Graz 541
Tropical Tropopause Characteristics from CHAMP 577
Comparisons of MIPAS/ENVISAT and GPS- RO/ CHAMP Temperatures 583
Comparison of GPS/SAC-C and MIPAS/ ENVISAT Temperature Profiles and Its Possible Implementation for EOS MLS Observations 589
The Continuous Wavelet Transform, a Valuable Analysis Tool to Detect Atmospheric and Ionospheric Signatures in GPS Radio Occultation Phase Delay Data 607
The CHAMP Atmospheric Processing System for Radio Occultation Measurements 613
Analysis of GravityWave Variability from SAC-C and CHAMP Occultation Profiles between June 2001 and March 2003 625
AUTHOR INDEX 637
KEYWORD INDEX 641