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The LRS double prism assembly to be flown on the James Webb Space Telescope and host galaxies of active galactic nuclei in the near infrared
(Univ. Köln, 2008)
The work presented in my thesis covers two aspects of modern astronomy: Observations and instrumentation. Part I of this thesis addresses the design, the development and the qualification of the Low Resolution Spectroscopy ...
Impact of Volcanic Aerosols on the Hydrology of the Asian Monsoon and Westerlies‐Dominated Subregions: Comparison of Proxy and Multimodel Ensemble Means
(
- Journal of Geophysical Research: Atmospheres
, 2020-09-11)
Proxy‐model comparisons show large discrepancies in the impact of volcanic aerosols on the hydrology of the Asian monsoon region (AMR). This was mostly imputed to uncertainties arising from the use of a single model in ...
Machine Learning‐Based Prediction of Spatiotemporal Uncertainties in Global Wind Velocity Reanalyses
(
- Journal of Advances in Modeling Earth Systems
, 2020-05-13)
The characterization of uncertainties in geophysical quantities is an important task with widespread applications for time series prediction, numerical modeling, and data assimilation. In this context, machine learning is ...
Lumineszenzdatierung glazifluvialer Sedimente im nördlichen Alpenvorland
(Univ. Köln, 2008)
Das nördliche Alpenvorland gilt als klassische Region der Quartärforschung. Hier wurde das System der quartären Eiszeiten anhand der Terrassenstratigraphie entwickelt (PENCK & BRÜCKNER 1901/1909). Die drei letzten Eiszeiten ...
Untersuchungen zur Geschwindigkeitsstruktur im unteren Erdmantel und im Bereich der Kern-Mantel-Grenze unterhalb des Pazifiks mit Scherwellen
(Selbstverlag, 1990)
In der vorliegenden Arbeit werden anomale Laufzeitdifferenzen zwischen den Mantel- und Kernphasen S, Sdiff, SKS und SKKS mit lateralen Geschwindigkeitsperturbationen gegenüber dem Standarderdmodell PREM erklärt. Das ...
Untersuchungen zur Geschwindigkeitsstruktur im unteren Erdmantel und im Bereich der Kern-Mantei-Grenze unterhalb des Pazifiks mit Scherwellen
(Institut für Meteorologie und Geophysik, Johann Wolfgang Goethe-Universität Frankfurt am Main, 1990)
In der vorliegenden Arbeit werden anomale Laufzeitdifferenzen zwischen den Mantel- und Kernphasen S, Sdiff, SKS und SKKS mit lateralen Geschwindigkeitsperturbationen gegenüber dem Standarderdmodell PREM erklärt. Das ...
Structure and evolution of the northern part of the Northeast German Basin revealed from seismic interpretation and 3D structural modelling
(Univ. Hamburg, 2007)
During several marine geophysical data acquisition cruises in the western Baltic Sea, for the Baltseis and NeoBaltic projects, a dense grid of 2D high-resolution multichannel seismics and to some extend gravity and magnetic ...
A Combined Neural Network‐ and Physics‐Based Approach for Modeling Plasmasphere Dynamics
(
- Journal of Geophysical Research: Space Physics
, 2021-03-16)
In recent years, feedforward neural networks (NNs) have been successfully applied to reconstruct global plasmasphere dynamics in the equatorial plane. These neural network‐based models capture the large‐scale dynamics of ...
Surface properties of asteroids from mid-infrared observations and thermophysical modeling
(Univ. Berlin, 2007)
The subject of this work is the physical characterization of asteroids, with an emphasis on the thermal inertia of near-Earth asteroids (NEAs). Thermal inertia governs the Yarkovsky effect, a non-gravitational force which ...
Estimating Shortwave Clear-Sky Fluxes From Hourly Global Radiation Records by Quantile Regression
(
- Earth and Space Science
, 2019)
Estimates of radiative fluxes under cloud-free conditions (“clear-sky”) are required in many fields, from climatic analyses of solar transmission to estimates of solar energy potential for electricity generation. Ideally, ...