A5040641481- Geophysics and Gravity Measurements
- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- GNSS positioning and interference
- Geomagnetism and Paleomagnetism Studies
- Wind and Air Flow Studies
- Earthquake Detection and Analysis
- Planetary Science and Exploration
- Atmospheric Ozone and Climate
- Aerodynamics and Fluid Dynamics Research
- Solar Radiation and Photovoltaics
- Spaceflight effects on biology
- Astro and Planetary Science
- Atmospheric chemistry and aerosols
- Spacecraft Design and Technology
- Wind Energy Research and Development
- Meteorological Phenomena and Simulations
- Spacecraft and Cryogenic Technologies
- Computational Physics and Python Applications
European Space Research and Technology Centre
2020-2024
Delft University of Technology
2016-2021
ESA’s Next Generation Gravity Mission (NGGM) is a candidate of Opportunity for ESA–NASA cooperation in the frame Mass Change and Geosciences International Constellation (MAGIC). The mission aims at enabling long-term monitoring temporal variations Earth’s gravity field relatively high (down to 3 days) increased spatial resolutions (up 100 km) longer time intervals. This implies also that series GRACE GRACE-FO can be extended towards climate series. Such carry information about mass change...
Abstract. The lower-thermosphere–ionosphere (LTI) system consists of the upper atmosphere and lower part ionosphere as such comprises a complex coupled to both below space above. atmospheric LTI is dominated by laws continuum fluid dynamics chemistry, while plasma controlled electromagnetic forces driven magnetosphere, solar wind, well wind dynamo. hence domain many different physical processes. However, systematic in situ measurements within this region are severely lacking, although...
The satellite acceleration data from the CHAMP, GRACE, GOCE, and Swarm missions provide detailed information on thermosphere density over last two decades. Recent work reducing errors in modelling spacecraft geometry has greatly reduced scale differences between sets these missions. However, residual inconsistencies models are still present. To a large extent, originate of gas-surface interactions (GSI), which is part aerodynamic used to processing. Physics-based GSI require in-situ...
Satellite drag modeling remains the largest source of uncertainty affecting space operations in low Earth orbit. The stems from inaccurate models for mass density and coefficient. Drag coefficient also impacts scientific knowledge on physics dynamics upper atmosphere through estimation high-fidelity measurements acceleration on-board satellites. Efforts over last decade have pushed right direction, however, resulted multiple methods tools. We provide a comprehensive review Current scale...
The Next Generation Gravity Mission (NGGM) is European Space Agency’s (ESA) next of Opportunity.  It aims to extend and improve time series satellite gravity missions by providing enhanced spatial temporal resolution time-varying field measurements with reduced uncertainty latency address the international user needs as expressed International Union Geodesy Geophysics (IUGG[1]) Global Climate Observing System (GCOS[2]) demonstrate critical capabilities for a potential...
Abstract The re‐estimates of thermospheric winds from the Gravity field and steady‐state Ocean Circulation Explorer (GOCE) accelerometer measurements were released in April 2019. In this study, we compared new‐released GOCE crosswind (cross‐track wind) data with horizontal measured by four Fabry‐Perot interferometers (FPIs) located at low middle latitudes. Our results show that during magnetically quiet periods on dusk side has typical seasonal variations largest speed around December lowest...
Abstract. The accuracy of global atmospheric models used to predict the middle/lower thermosphere characteristics is still an open topic. Uncertainties in prediction gas properties lead inaccurate computations drag force on space objects (i.e. satellites or debris). Currently lifetime and therefore population debris low Earth orbit (LEO) cannot be quantified with a satisfactory degree accuracy. In this paper, Global Ionosphere Thermosphere Model (GITM) developed at University Michigan has...
Abstract Recently, the horizontal and vertical cross wind at 225‐ to 295‐km altitude were derived from linear acceleration measurements of Gravity field steady‐state Ocean Circulation Explorer satellite. The component these data is compared mass spectrometers Atmosphere C E Dynamics 2 satellites. From a statistical analysis 120‐s moving‐window standard deviation ( σ V z )), no consistent discrepancy found between accelerometer‐derived spectrometer‐derived data. validated are then used...
The objective of ESA's Next Generation Gravity Mission (NGGM) is long-term monitoring the temporal variations Earth's gravity field at high (down to 3 days) and spatial (100 km) resolution. Such carry information about mass change induced by water cycle related exchange among atmosphere, oceans, cryosphere land, will complete our picture Global Change with otherwise unavailable data. observable variation distance between two satellites measured a laser interferometer; ultra-precise...
In the past twenty years, gravimetry missions have demonstrated a unique capability to monitor not only major climate-related changes of Earth directly from space - quantifying melt large glaciers and ice sheets, global sea level rise, continental draught, flooding events, also effects earthquakes tsunamis. Adding fundamental knowledge Earth, quantum mission will provide essential climate variables (ECV) unprecedented quality for ground water, mass balance sheets glaciers, heat transport,.....
The German CHAMP, US/German GRACE, and European Space Agency (ESA) GOCE Swarm Earth Explorer satellites have provided a data set of accelerometer observations allowing the derivation thermospheric density wind products for period spanning more than 15 years. With advent highly accurate satellite measurements, neutral characterization has been significantly improved. These detailed information on forcing by Solar Extreme Ultraviolet radiation charged particles, revealed first time extent...
Abstract. The lower-thermosphere–ionosphere (LTI) system consists of the upper atmosphere and lower part ionosphere, as such comprises a complex coupled to both below space above. atmospheric LTI is dominated by laws continuum fluid dynamics chemistry, while ionosphere plasma controlled electromagnetic forces driven magnetosphere solar wind. hence domain many different physical processes. However, systematic in situ measurements within this region are severely lacking, although located only...
The objective of ESA’s Next Generation Gravity Mission (NGGM) is long-term monitoring the temporal variations Earth’s gravity field at high (down to 3 days) and spatial (100 km) resolution. Such carry information about mass change induced by water cycle related exchange among atmosphere, oceans, cryosphere land, will complete our picture Global Change with otherwise unavailable data. observable variation distance between two satellites measured a laser interferometer;...
ESA and NASA are currently intensifying their long-term efforts on a collaborative implementation of next generation mass change gravity monitoring satellite mission under the umbrella NASA-ESA Joint Programme Planning Group sub-group 1. MAss-change Geosciences International Constellation (MAGIC) is joint NASA/ESA constellation concept based NASA’s MCDO ESA’s NGGM studies. The main objective MAGIC to extend transport time series from previous missions such as GRACE...
<p>The reestimates of thermospheric winds from the Gravity field and steady-state Ocean Circulation Explorer (GOCE) accelerometer measurements were released in April 2019. In this study, we compared new-released GOCE crosswind (cross-track wind) data with horizontal measured by four Fabry-Perot interferometers (FPIs) located at low middle latitudes. Our results show that during magnetically quiet periods on dusk side has typical seasonal variations largest speed around December...