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Clouds, radiation, and atmospheric circulation in the present‐day climate and under climate change
(
- Wiley Interdisciplinary Reviews: Climate Change
, 2020-11-25)
By interacting with radiation, clouds modulate the flow of energy through the Earth system, the circulation of the atmosphere, and regional climate. We review the impact of cloud‐radiation interactions for the atmospheric ...
Stick‐Slip Tremor Beneath an Alpine Glacier
(
- Geophysical Research Letters
, 2021-01-25)
Sliding of glacial ice over its base is typically described by a frictionless or slowly deforming bed. This view is challenged by recent seismic observations of stick‐slip motion at the ice‐bed interface. We revisit a ...
Using a Large‐n Seismic Array to Explore the Robustness of Spectral Estimations
(
- Geophysical Research Letters
, 2020-10-31)
Spectral analysis is widely used to estimate and refine earthquake source parameters such as source radius, seismic moment, and stress drop. This study aims to quantify the precision of the single spectra and empirical ...
Statistical Forecasts for the Occurrence of Precipitation Outperform Global Models over Northern Tropical Africa
(
- Geophysical Research Letters
, 2021-02-02)
Short‐term global ensemble predictions of rainfall currently have no skill over northern tropical Africa when compared to simple climatology‐based forecasts, even after sophisticated statistical postprocessing. Here, we ...
Kugelfunktionen und Analyse heterogener Schweredaten im Spektralbereich
(Univ. Berlin, 2007)
Zu einem aktuellen Thema der Geodäsie werden in Form geeigneter Berechnungsverfahren im Spektralbereich wie auch im Zeitbereich Auswertestrategien zur Bestimmung globaler Erdschwerefeldmodelle anhand von Satellitenbeobac ...
Data assimilation in a regional finite element sea-ice model for the Arctic
(Univ. Bremen, 2008)
Sea-ice, Finite Element Sea-Ice Model, Kalman Filter, Data Assimilation. - The Arctic region is sensitive to climate change. Since the Arctic sea-ice cover influences the surface heat budget of the Earth the observed sea-ice ...
Airborne-based geophysical investigation in Dronning Maud Land, Antarctica
(Univ. Bremen, 2008)
Antarctica represents a key component in the investigation of the geological history and reconstruction of the supercontinents Rodinia and Gondwana. Remnants of the formation and disintegration of these former land masses ...
Grain‐Size Distribution and Propagation Effects on Seismic Signals Generated by Bedload Transport
(
- Water Resources Research
, 2021-04-02)
Bedload transport is a key process in fluvial morphodynamics, but difficult to measure. The advent of seismic monitoring techniques has provided an alternative to in‐stream monitoring, which is often costly and cannot be ...
Wechselwirkung des Mars mit dem Sonnenwind
(Univ. Zugl.: Braunschweig, 2009)
Seit den 60er Jahren des letzten Jahrhunderts ist Mars immer wieder das Ziel von Raumfahrtmissionen gewesen, um unter anderem nach Wasser auf unserem Nachbarplaneten zu suchen. Nachdem die bisher analysierten Oberflächenmerkmale ...
Deformation and micromechanics of granular materials in shear zones - investigated with the Discrete Element Method
(Univ. Bremen, 2007)
Deformation, shear zone, granular, micromechanic, numerical model, discrete element method, distinct element method. - This thesis was inspired by the lack of detailed (i.e. particle scale) knowledge concerning deformation ...