Browsing Geophysik, Extraterrestische Forschung by Title
Now showing items 760-779 of 1223
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On the relevance of adhesion - applications to Saturn's rings
(Univ. Potsdam, 2006)Seit ihrer Entdeckung im Jahre 1610 durch Galileo Galilei faszinieren die Ringe des Saturn sowohl Laien als auch Experten. Planetare Ringe finden sich in der Äquatorialebene aller vier Riesenplaneten unseres Sonnensystems ... -
On the representation of atmospheric circulation modes in regional climate models over Western Europe
(International Journal of Climatology, 2022-07-27)Atmospheric circulation is a key driver of climate variability, and the representation of atmospheric circulation modes in regional climate models (RCMs) can enhance the credibility of regional climate projections. This ... -
On the Resolution of Triangular Meshes
(Journal of Advances in Modeling Earth Systems, 2022-10-08)It is generally agreed that the resolution of a regular quadrilateral mesh is the side length of quadrilateral cells. There is less agreement on the resolution of triangular meshes, exacerbated by the fact that the numbers ... -
On the Ridging of the South Atlantic Anticyclone Over South Africa: The Impact of Rossby Wave Breaking and of Climate Change
(Geophysical Research Letters, 2022-10-19)Ridging South Atlantic Anticyclones contribute an important amount of precipitation over South Africa. Here, we use a global coupled climate model and the ERA5 reanalysis to separate for the first time ridging highs (RHs) ... -
On the Temperature Dependence of the Cloud Ice Particle Effective Radius—A Satellite Perspective
(Geophysical Research Letters, 2023-03-21)Cloud ice particle effective radius in atmospheric models is usually parametrized. A widely‐used parametrization comprises a strong dependence on the temperature. Utilizing available satellite‐based estimates of both cloud ... -
On the treatment of the geodetic boundary value problem by means of regular gravity space formulations - proof of concept based on numerical closed loop simulations
(Univ. Stuttgart, 2009)The aim of this thesis is to present an alternative for the solution of a fundamental problem of geodesy. This problem, the so-called classical geodetic boundary value problem, comprises the determination of the figure of ... -
On Timescales and Reversibility of the Ocean's Response to Enhanced Greenland Ice Sheet Melting in Comprehensive Climate Models
(Geophysical Research Letters, 2022-03-01)Warming of the North Atlantic region in climate history often was associated with massive melting of the Greenland Ice Sheet. To identify the meltwater's impacts and isolate these from internal variability and other global ... -
On-the-Fly Calculation of Absorbed and Equivalent Atmospheric Radiation Dose in A Water Phantom with the Atmospheric Radiation Interaction Simulator (AtRIS)
(Journal of Geophysical Research: Space Physics, 2019)Computation of the ionization and radiation dose in arbitrary (exo-) planetary atmospheres due to energetic particles is recently becoming more important due to several reasons that are either correlated with the detection ... -
One Hundred Thousand Years of Geomagnetic Field Evolution
(Reviews of Geophysics, 2019)Paleomagnetic records from sediments, archeological artifacts, and lava flows provide the foundation for studying geomagnetic field changes over 0–100 ka. Late Quaternary time-varying spherical harmonic models for 0–100 ka ... -
One Step at a Time: How Model Time Step Significantly Affects Convection-Permitting Simulations
(Journal of Advances in Modeling Earth Systems, 2019)We show that there is a strong sensitivity of cloud microphysics to model time step in idealized convection-permitting simulations using the COnsortium for Small-scale MOdeling model. Specifically, we found a 53% reduction ... -
On‐site non‐destructive determination of the remanent magnetization of archaeological finds using field magnetometers
(Archaeological Prospection, 2021-09-30)The determination of the natural remanent magnetization (NRM) of archaeological features can be used for magnetic modelling, joining of shards, archaeomagnetic dating or the investigation of the firing–cooling–collapsing ... -
Operator-splitting methods for wave-equations
(Humboldt-Univ., Berlin2007)The motivation to our studies came from simulation of earth-quakes, that are modeled with elastic wave equations. In our paper we focus on the study of the stiff problems for the wave-equations. Due to this contribution ... -
Opportunistic Constant Target Matching—A New Method for Satellite Intercalibration
(Earth and Space Science, 2020)Opportunistic constant target matching is a new method for satellite intercalibration. It solves a long-standing issue with the traditional simultaneous nadir overpass (SNO) method, namely, that it typically provides only ... -
Optical clock technologies for global navigation satellite systems
(GPS Solutions, 2021-04-05)Future generations of global navigation satellite systems (GNSSs) can benefit from optical technologies. Especially optical clocks could back-up or replace the currently used microwave clocks, having the potential to improve ... -
Optical variability of counterparts of ROSAT X-ray sources near the north ecliptic pole
(Univ. Berlin, 2005)Optical counterparts of X-ray selected sources to a large part consist of active galactic nuclei (AGN). A large proportion of these counterparts turns out to be optically variable, and because the timescales and manner of ... -
Ozon- und Wasserdampfverteilung im polaren Strahlstrom über dem Nordatlantik
(Univ. Köln, 1998) -
Ozone depletion, chlorine activation and water vapor observed in Spitsbergen
(Univ. Bremen, 2002) -
Palaeoenvironmental evolution of the Tunisian carbonate platform margin - response to global oceanographic and climatic changes (Barremian-Aptian)
(Univ. Bremen, 2008)The Late BarremianLate Aptian interval was characterised by several major changes in the ocean/climate system related to the onset of the Mid-Cretaceous greenhouse world. North Africansedimentary deposits offer excellent ...