System Earth Via Geodetic-geophysical Space Techniques

by Flechtner, Frank; Gruber, Thomas; Gunter, Andreas; Mandea, Mioara; Rothacher, Markus

• ISBN13: 9783642102271
• ISBN10: 3642102271
• Format: Hardcover
• Copyright: 2010-08-20
• Publisher: Springer Verlag

Summary

The Earth's magnetic and gravity field play an important role in global and regional geodynamics. Satellite exploration of these fields has received great attention in recent years. Research satellites such as CHAMP and GRACE as well as the ESA explorer GOCE apply new measurement techniques, thus allowing the recovery of the gravitational and magnetic field with unprecedented accuracy and resolution, spatial as well as temporal. Combined with terrestrial observations and computer models, this data will help develop a more detailed understanding of the Earth as a system.In Germany, many of the processing, modelling and interpreting methodologies for these new observation techniques are developed under the umbrella of the R&D-programme GEOTECHNOLOGIEN, funded by the Federal Ministry of Education and Research (BMBF). The research projects focus on a better understanding of the spatial and temporal variations in the magnetic and gravity field and their relationship to the dynamics of the Earth's interior and global change processes. This volume presents the results of the multidisciplinary studies covered by the programme for the period 2005-2008. It includes the following topics:- High-accuracy gravity field models- Near-real-time provision and usage of CHAMP and GRACE atmospheric sounding- Sea level variations- Improved GRACE gravity time series and their validation by ocean bottom pressure measurements- Integration of space geodetic techniques as a basis for the Global Geodetic-Geophysical Observing System (GGOS)- High-resolution magnetic field models and global magnetisation maps- Time-variable gravity and surface mass processes.

Table of Contents

Champ and Grace
More Accurate and Faster Available CHAMP and GRACE Gravity Fields for the User Community	p. 3
The CHAMP/GRACE User Portal ISDC	p. 15
Improvements for the CHAMP and GRACE Observation Model	p. 29
The Release 04 CHAMP and GRACE EIGEN Gravity Field Models	p. 41
Orbit Predictions for CHAMP and GRACE	p. 59
Rapid Science Orbits for CHAMP and GRACE Radio Occultation Data Analysis	p. 67
Parallelization and High Performance Computation for Accelerated CHAMP and GRACE Data Analysis	p. 79
Grace
Improved GRACE Level-1 and Level-2 Products and Their Validation by Ocean Bottom Pressure	p. 95
The GRACE Gravity Sensor System	p. 105
Numerical Simulations of Short-Term Non-tidal Ocean Mass Anomalies	p. 119
Improved Non-tidal Atmospheric and Oceanic De-aliasing for GRACE and SLR Satellites	p. 131
Global Gravity Fields from Simulated Level-1 GRACE Data	p. 143
ITG-GRACE: Global Static and Temporal Gravity Field Models from GRACE Data	p. 159
Validation of GRACE Gravity Fields by In-Situ Data of Ocean Bottom Pressure	p. 169
Antarctic Circumpolar Current Transport Variability in GRACE Gravity Solutions and Numerical Ocean Model Simulations	p. 187
Goce
Gravity and Steady-State Ocean Circulation Explorer GOCE	p. 203
GOCE Data Analysis: From Calibrated Measurements to the Global Earth Gravity Field	p. 213
GOCE and Its Use for a High-Resolution Global Gravity Combination Model	p. 231
Spectral Approaches to Solving the Polar Gap Problem	p. 243
Regionally Refined Gravity Field Models from In-Situ Satellite Data	p. 255
Quality Evaluation of GOCE Gradients	p. 265
Validation of Satellite Gravity Field Models by Regional Terrestrial Data Sets	p. 277
Comparison of GRACE and Model-Based Estimates of Bottom Pressure Variations Against In Situ Bottom Pressure Measurements	p. 297
Seavar
Sea Level Variations - Prospects from the Past to the Present (SEAVAR)	p. 313
Radar Altimetry Derived Sea Level Anomalies - The Benefit of New Orbits and Harmonization	p. 317
Combining GEOSAT and TOPEX/Poseidon Data by Means of Data Assimilation	p. 325
Reanalysis of GPS Data at Tide Gauges and the Combination for the IGS TIGA Pilot Project	p. 335
Sea Level Rise in North Atlantic Derived from Gap Filled Tide Gauge Stations of the PSMSL Data Set	p. 341
Using ARGO, GRACE and Altimetry Data to Assess the Quasi Stationary North Atlantic Circulation	p. 351
A 15-Year Reconstruction of Sea Level Anomalies Using Radar Altimetry and GPS-Corrected Tide Gauge Data	p. 359
Tivagam
Continental Water Storage Variations from GRACE Time-Variable Gravity Data	p. 369
Surface Mass Variability from GRACE and Hydrological Models: Characteristic Periods and the Reconstruction of Significant Signals	p. 377
Time-Space Multiscale Analysis and Its Application to GRACE and Hydrology Data	p. 387
Mass Variation Signals in GRACE Products and in Crustal Deformations from GPS: A Comparison	p. 399
Monthly and Daily Variations of Continental Water Storage and Flows	p. 407
Calibration of a Global Hydrological Model with GRACE Data	p. 417
NRT-RO
Near-Real-Time Provision and Usage of Global Atmospheric Data from CHAMP and GRACE (NRT-RO): Motivation and Introduction	p. 429
Global Atmospheric Data from CHAMP and GRACE-A: Overview and Results	p. 433
Near-Real Time Satellite Orbit Determination for GPS Radio Occultation with CHAMP and GRACE	p. 443
The Operational Processing System for GPS Radio Occultation Data from CHAMP and GRACE	p. 455
Assimilation of CHAMP and GRACE-A Radio Occultation Data in the GME Global Meteorological Model of the German Weather Service	p. 461
Magfield
The Earth's Magnetic Field at the CHAMP Satellite Epoch	p. 475
Ggos-D
Integration of Space Geodetic Techniques as the Basis for a Global Geodetic-Geophysical Observing System (GGOS-D): An Overview	p. 529
GGOS-D Data Management - From Data to Knowledge	p. 539
GGOS-D Consistent, High-Accuracy Technique-Specific Solutions	p. 545
GGOS-D Global Terrestrial Reference Frame	p. 555
GGOS-D Consistent and Combined Time Series of Geodetic/Geophyical Parameters	p. 565
GGOS-D Integration with Low Earth Orbiters	p. 577
Index	p. 583
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