Reigber / Lühr / Schwintzer Earth Observation with CHAMP

Results from Three Years in Orbit
1. Auflage 2005
ISBN: 978-3-540-26800-0
Verlag: Springer-Verlag
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 628 Seiten

In the summer of 2000 the German geo-research satellite CHAMP was launched into orbit. Its innovative payload arrangement and the low initial orbit allow CHAMP to simultaneously collect and almost continuously analyse precise data relating to gravity and magnetic fields at low altitude. In addition, CHAMP also measures the neutral atmosphere and ionosphere using GPS techniques. Three years after launch, more than 200 CHAMP investigators and co-investigators from all over the world met at the GeoForschungsZentrum in Potsdam to present and discuss the results derived from the  extensive data sets of the mission. The main outcome of this expert meeting is summarized in this volume. The book offers a comprehensive insight into the present status of the exploitation of CHAMP data for Earth system research and practical applications in geodesy, geophysics and meteorology.

Autoren/Hrsg.

Reigber, Christoph

Lühr, Hermann

Schwintzer, Peter

Wickert, Jens

Inhaltsverzeichnis

1;PREFACE;5
2;Table of Contents;7
3;Orbit and Earth Gravity Field;18
3.1;Ice Mass Balance and Antarctic Gravity Change: Satellite and Terrestrial Perspectives;19
3.2;Gravity Model TUM-2Sp Based on the Energy Balance Approach and Kinematic CHAMP Orbits;29
3.3;On the Contribution of CHAMP to Temporal Gravity Field Variation Studies;35
3.4;Evaluation of Terrestrial Gravity Data by Independent Global Gravity Field Models;75
3.5;Recent Developments in CHAMP Orbit Determination at GFZ;81
3.6;On Calibrating the CHAMP On-Board Accelerometer and Attitude Quaternion Processing;87
3.7;Comparison of Different Stochastic Orbit Modeling Techniques;105
3.8;Determination of Non-Conservative Accelerations from Orbit Analysis;111
3.9;Application of Eigenvalue Decomposition in the Parallel Computation of a CHAMP 100x100 Gravity Field;131
3.10;Time-Variable Gravity Seen by Satellite Missions: On its Sampling and its Parametrization;137
3.11;Statistical Assessment of CHAMP Data and Models Using the Energy Balance Approach;149
3.12;Multiscale Geopotential Solutions from CHAMP Orbits and Accelerometry;155
3.13;Multiscale Modeling from EIGEN-1S, EIGEN-2, EIGEN- GRACE01S, UCPH2002_0.5, EGM96;161
3.14;A Comparison of Various Procedures for Global Gravity Field Recovery from CHAMP Orbits;167
3.15;Precise Orbit Determination for CHAMP Using an Efficient Kinematic and Reduced- Dynamic Procedure;173
3.16;On Bias and Scale and Thrust Factors for CHAMP Accelerometry;179
3.17;CHAMP Clock Characterization Revisited;191
3.18;How Baltic Sea Water Mass Variations Mask the Postglacial Rebound Signal in CHAMP and GRACE Gravity Field Solutions;197
3.19;The Impact of the New CHAMP and GRACE Gravity Models on the Measurement of the General Relativistic Lense– Thirring Effect;203
3.20;Recovery of Isostatic Topography over North America from Topographic and CHAMP Gravity Correlations;209
3.21;Impact of the CHAMP Mission on Estimating the Mean Sea Surface;221
3.22;Improved Estimates of the Oceanic Circulation Using the CHAMP Geoid;227
3.23;Contemporary Changes in the Geoid About Greenland: Predictions Relevant to Gravity Space Missions;233
3.24;Mantle Viscosity and S-Wave to Density Conversion Profiles using CHAMP Geoid Data;239
4;Earth Magnetic Field;254
4.1;Ionospheric Plasma Effects for Geomagnetic LEO Missions at Mid- and Low- Latitudes;255
4.2;Magnetic Crustal Thickness in Greenland from CHAMP and Ørsted Data;271
4.3;Introducing POMME, the POtsdam Magnetic Model of the Earth;309
4.4;New Insight into Secular Variation Between MAGSAT and CHAMP/ ØRSTED;321
4.5;Time Structure of the 1991 Magnetic Jerk in the Core- Mantle Boundary Zone by Inverting Global Magnetic Data Supported by Satellite Measurements;327
4.6;The Spectrum of the Magnetic Secular Variation;345
4.7;Electromagnetic Induction by Sq Ionospheric Currents in a Heterogeneous Earth: Modeling Using Ground- based and Satellite Measurements;357
4.8;Wavelet Analysis of CHAMP Flux Gate Magnetometer Data;363
4.9;Modelling the Ocean Effect of Geomagnetic Storms at Ground and Satellite Altitude;369
4.10;The Enhancement of the Thermospheric Density During the Sept. 25– 26, 2001 Magnetic Storm;382
4.11;On the Modelling of Field-Aligned Currents from Magnetic Observations by Polar Orbiting Satellites;387
4.12;The Low-Altitude Cusp: Multi-Point Observations During the February 2002 SIRCUS Campaign;391
4.13;Detection of Intense Fine-Scale Field-Aligned Current Structures in the Cusp Region;397
4.14;Status of the CHAMP ME Data Processing;429
5;Neutral Atmosphere and Ionosphere;436
5.1;Ionospheric Tomography with GPS Data from CHAMP and SAC- C;469
5.2;Differential Code Bias of GPS Receivers in Low Earth Orbit: An Assessment for CHAMP and SAC- C;481
5.3;Ionosphere/Plasmasphere Imaging Based on GPS Navigation Measurements from CHAMP and SAC- C;487
5.4;Three-Dimensional Monitoring of the Polar Ionosphere with Ground- and Space- Based GPS;493
5.5;Model for Short-term Atmospheric Density Variations;505
5.6;Atmospheric Profiling with CHAMP: Status of the Operational Data Analysis, Validation of the Recent Data Products and Future Prospects;511
5.7;Simulated Temperature and Water Vapor Retrieval from Bending Angles and Refractivity Measurements using an Optimal Estimation Approach;517
5.8;An Analysis of the Lower Tropospheric Refractivity Bias by Heuristic Sliding Spectral Methods;523
5.9;Canonical Transform Methods for Analysis of Radio Occultations;535
5.10;GPS Radio Occultation with CHAMP: Comparison of Atmospheric Profiles from GFZ Potsdam and IGAM Graz;541
5.11;Tropical Tropopause Characteristics from CH577
5.12;Comparisons of MIPAS/ENVISAT and GPS- RO/ CHAMP Temperatures;583
5.13;Comparison of GPS/SAC-C and MIPAS/ ENVISAT Temperature Profiles and Its Possible Implementation for EOS MLS Observations;589
5.14;The Continuous Wavelet Transform, a Valuable Analysis Tool to Detect Atmospheric and Ionospheric Signatures in GPS Radio Occultation Phase Delay Data;607
5.15;The CHAMP Atmospheric Processing System for Radio Occultation Measurements;613
5.16;Analysis of GravityWave Variability from SAC-C and CHAMP Occultation Profiles between June 2001 and March 2003;625
6;AUTHOR INDEX;637
7;KEYWORD INDEX;641