A5019213497- Geophysics and Gravity Measurements
- Geomagnetism and Paleomagnetism Studies
- Solar and Space Plasma Dynamics
- Oceanographic and Atmospheric Processes
- Inertial Sensor and Navigation
- GNSS positioning and interference
- Geological and Geophysical Studies
- Ionosphere and magnetosphere dynamics
- Methane Hydrates and Related Phenomena
- Space exploration and regulation
- Arctic and Antarctic ice dynamics
- Culinary Culture and Tourism
- Wine Industry and Tourism
- Scientific Research and Discoveries
- Climate variability and models
- Distributed and Parallel Computing Systems
- Space Satellite Systems and Control
- Spacecraft Design and Technology
- Reservoir Engineering and Simulation Methods
- Diverse Aspects of Tourism Research
- Hydrocarbon exploration and reservoir analysis
- Atmospheric and Environmental Gas Dynamics
University of Bonn
2017-2021
Stenden University of Applied Sciences
2016
Abstract The Gravity Recovery and Climate Experiment (GRACE) mission ended its operation in October 2017, the GRACE Follow‐On was launched only May 2018, leading to approximately 1 year of data gap. Given that GRACE‐type observations are exclusively providing direct estimates total water storage change (TWSC), it would be very important bridge gap between these two missions. Furthermore, for many climate‐related applications, is also desirable reconstruct TWSC prior period. In this study, we...
Abstract The Gravity Recovery and Climate Experiment (GRACE) mission has enabled mass changes transports in the hydrosphere, cryosphere oceans to be quantified with unprecedented resolution. However, while this legacy is currently being continued GRACE Follow-On (GRACE-FO) there a gap of 11 months between end start GRACE-FO which must addressed. Here we bridge by combining time-variable, low-resolution gravity models derived from European Space Agency’s Swarm satellites dominating spatial...
Abstract. Measuring the spatiotemporal variation of ocean mass allows for partitioning volumetric sea level change, sampled by radar altimeters, into mass-driven and steric parts. The latter is related to heat change current Earth's energy imbalance. Since 2002, Gravity Recovery Climate Experiment (GRACE) mission has provided monthly snapshots time-variable gravity field, from which one can derive variability. However, GRACE reached end its lifetime with data degradation several gaps...
Abstract. Ultra-sensitive space-borne accelerometers on board of low Earth orbit (LEO) satellites are used to measure non-gravitational forces acting the surface these satellites. These consist radiation pressure, solar pressure and atmospheric drag, where first two caused by emitted from Sun, respectively, latter is related thermospheric density. On-board accelerometer measurements contain systematic errors, which need be mitigated applying a calibration before their use in gravity recovery...
Quantifying spatial and temporal changes in thermospheric neutral density is important for various applications such as precise orbit determination, estimating mission lifetime re-entry prediction of Earth orbiting objects. It also crucial analysis possible collisions between active satellite missions space debris. Empirical models are frequently applied to estimate densities at the position satellites. But their accuracy severely constrained by model simplifications sampling limitation...
This paper focuses on a specific sub-part of hospitality, namely sustainable product creation via regional integration. According to the research question "To what extent does integration local apple products contribute value in Altes Land regard tourism stakeholders?" this examined – defined as people, planet, profit created by one food speciality, apples Land. The region Land, situated close Hamburg, Germany, is known for its and promotes them part cultural heritage region. For purpose,...
Abstract. Measuring the spatiotemporal variation of ocean mass allows one to partition volumetric sea level change, sampled by radar altimeters, into a mass-driven and steric part, latter being related heat change current Earth’s energy imbalance. Since 2002, Gravity Recovery Climate Experiment (GRACE) mission provides estimates time-variable gravity field, from which can derive variability. However, GRACE has reached end its lifetime with data degradation several gaps during last years,...
<p>Improved estimates of temperature, salinity, and sea surface height changes are computed from radar altimetry, satellite gravimetry Argo profiles, validated by the in situ ocean bottom pressure measurements a South Atlantic transect Antarctic Circumpolar current. Using altimetry observations, separate contributions to global level can be estimated, but regional solution is more challenging. Furthermore, derived steric change suffers spatio-temporal sampling problems, some...