Thomas Gruber

ORCID: 0000-0003-2615-3681
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About
Contact & Profiles
Research Areas
  • Geophysics and Gravity Measurements
  • Geomagnetism and Paleomagnetism Studies
  • GNSS positioning and interference
  • Inertial Sensor and Navigation
  • Solar and Space Plasma Dynamics
  • Ionosphere and magnetosphere dynamics
  • Spacecraft and Cryogenic Technologies
  • Computational Physics and Python Applications
  • Reservoir Engineering and Simulation Methods
  • Geological Modeling and Analysis
  • Geophysical and Geoelectrical Methods
  • Methane Hydrates and Related Phenomena
  • Geological and Geophysical Studies
  • Spacecraft Design and Technology
  • Corporate Governance and Management
  • Additive Manufacturing Materials and Processes
  • Planetary Science and Exploration
  • Astro and Planetary Science
  • Synthetic Aperture Radar (SAR) Applications and Techniques
  • Medical and Health Sciences Research
  • Satellite Image Processing and Photogrammetry
  • Geophysics and Sensor Technology
  • Welding Techniques and Residual Stresses
  • Astronomical Observations and Instrumentation
  • Additive Manufacturing and 3D Printing Technologies

Technical University of Munich
2014-2024

Silicon Austria Labs (Austria)
2024

Voestalpine (Austria)
2021-2023

Czech Academy of Sciences, Institute of Animal Physiology and Genetics
2022

Osnabrück University
2018

Audi (Germany)
2017

MESH (United States)
1995-2015

National Oceanography Centre
2013

Berlin School of Economics and Law
2013

Agriculture Victoria Services (Australia)
2003

Abstract XGM2019e is a combined global gravity field model represented by spheroidal harmonics up to degree and order (d/o) 5399, corresponding spatial resolution of 2′ (~ 4 km). As data sources, it includes the satellite GOCO06s in longer wavelength range d/o 300 with ground grid which also covers shorter wavelengths. The consist over land ocean anomalies provided courtesy NGA (15′ resolution, identical XGM2016) augmented topographically derived information (EARTH2014). Over oceans, from...

10.1007/s00190-020-01398-0 article EN cc-by Journal of Geodesy 2020-07-01

The satellite‐only gravity field model GOCO01S is a combination solution based on 61 days of GOCE gradient data, and 7 years GRACE GPS K‐band range rate resolved up to degree/order 224 harmonic series expansion. was performed consistently by addition full normal equations stochastic modeling observations. has been validated against external global models regional GPS/leveling While low medium degrees are mainly determined GRACE, significant contributions the new measurement type gradients...

10.1029/2010gl044906 article EN Geophysical Research Letters 2010-10-01

Abstract. GOCO06s is the latest satellite-only global gravity field model computed by GOCO (Gravity Observation Combination) project. It based on over a billion observations acquired 15 years from 19 satellites with different complementary observation principles. This combination of measurement techniques key in providing consistently high accuracy and best possible spatial resolution Earth's field. The motivation for new release was availability reprocessed data Gravity Recovery Climate...

10.5194/essd-13-99-2021 article EN cc-by Earth system science data 2021-01-27

Long term observation of temporal Earth's gravity field with enhanced and spatial resolution is a major objective for future satellite missions. Improving the performance accelerometers present in such missions one main path to explore. In this context, we propose study an original concept hybrid accelerometer associating state-of-the-art electrostatic (EA) promising quantum sensor based on cold atom interferometry. To assess potential instrument, numerical simulations have been performed...

10.3390/rs14143273 article EN cc-by Remote Sensing 2022-07-07

Regional sea level prediction plays a vital role in understanding the impacts of climate change and guiding design coastal infrastructure. Sea rise is mainly driven by two primary factors: barystatic change, caused melting ice sheets, glaciers, run-off terrestrial water, steric resulting from expansion seawater due to temperature salinity changes. The former can be monitored Gravity Recovery Climate Experiment (GRACE) GRACE Follow-On missions, latter commonly calculated based on ocean...

10.5194/egusphere-egu25-8792 preprint EN 2025-03-14

The Global Geodetic Observing System (GGOS) or the International Association of Geodesy (IAG) is currently focusing on definition Essential Variables (EGVs). (EVs) serve as basic metrics that encapsulate critical aspects geodetic observations, products and results, ensuring a structured framework for observing, understanding modelling Earth system, providing fundamental layer (i.e. reference frames) National Administrations sustainable development. Today, essential variables in geodesy are...

10.5194/egusphere-egu25-8814 preprint EN 2025-03-14

The new satellite Earth gravity field model GRIM5‐S1 was recently prepared in a joint GFZ and GRGS effort. Based on this solution terrestrial altimetric anomalies from NIMA, combined GRIM5‐C1, with full variance‐covariance matrix up to degree order 120, computed. Surface data are corrected for several systematic effects, such as ellipsoidal corrections aliasing. A weighting scheme anomalies, according their given standard deviations developed. From each set normal equations were finally the...

10.1029/2000gl011589 article EN Geophysical Research Letters 2000-12-15

One of the products derived from gravity field and steady-state ocean circulation explorer (GOCE) observations are gradients. These gradients provided in gradiometer reference frame (GRF) calibrated in-flight using satellite shaking star sensor data. To use these for application Earth scienes analysis, additional preprocessing needs to be done, including corrections temporal signals isolate static part, screening outliers, calibration by comparison with existing external information error...

10.1007/s00190-008-0279-9 article EN cc-by-nc Journal of Geodesy 2008-10-29

10.1016/j.jag.2013.10.005 article EN International Journal of Applied Earth Observation and Geoinformation 2013-12-02

High-frequency, time-varying mass redistributions in the ocean and atmosphere have an impact on GRACE gravity field solutions due to space–time sampling characteristics of signal orbit. Consequently, aliasing these signals into observations is present needs be taken account during data analysis by applying atmospheric oceanic model (de-aliasing). As accuracy predicted prior launch could not yet achieved real data, de-aliasing process related geophysical uncertainties are regarded as a...

10.1111/j.1365-246x.2010.04669.x article EN Geophysical Journal International 2010-06-23
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