Auflistung Geophysik, Extraterrestische Forschung nach Titel
Anzeige der Dokumente 69-88 von 1211
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Aerosol-Cloud-Precipitation Interactions in the Context of Convective Self-Aggregation
(Journal of Advances in Modeling Earth Systems, 2019)We investigate the sensitivity of self-aggregated radiative-convective-equilibrium cloud-resolving model simulations to the cloud condensation nuclei (CCN) concentration. Experiments were conducted on a long (2,000-km × 120-km) ... -
Age Uncertainty in Recurrence Analysis of Paleoseismic Records
(Journal of Geophysical Research: Solid Earth, 2021-08-07)Determining the aperiodicity of large earthquake recurrences is key to forecast future rupture behavior. Aperiodicity is classically expressed as the coefficient of variation of recurrence intervals, though the recent trend ... -
Airborne and ground level flask sampling for regional carbon budgets - the potential of multiple tracer and isotope analyses ; development of a new "Investigation Strategy" and of an improved "Sampling System"
(Univ. Hamburg, 2005)Aim of the study was to test the capability of multiple trace gas analyses for the assessment of regional carbon budgets. Therefore, air samples were taken by airborne and ground level activities during several field ... -
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 ... -
Air‐Sea Interactions and Water Mass Transformation During a Katabatic Storm in the Irminger Sea
(Journal of Geophysical Research: Oceans, 2022-04-28)We use a global 5‐km resolution model to analyze the air‐sea interactions during a katabatic storm in the Irminger Sea originating from the Ammassalik valleys. Katabatic storms have not yet been resolved in global climate ... -
Aktive Regionen der Sonnenoberfläche und ihre zeitliche Variation in zweidimensionaler Spektro-Polarimetrie
(Univ. Potsdam, 2008)Die Arbeit beschreibt die Analyse von Beobachtungen zweier Sonnenflecken in zweidimensionaler Spektro-Polarimetrie. Die Daten wurden mit dem Fabry-Pérot-Interferometer der Universität Göttingen am Vakuum-Turm-Teleskop auf ... -
Aktivitätskoeffizienten von Si und Cr in Fe-Ni-Legierungen und ihre Relevanz für die Thermodynamik planetarer Differentiationsprozesse
(Univ. Köln, 2005)Die Erde und viele andere planetare Körper besitzen Eisennickel-Kerne. Diese resultieren aus einer zumindest partiellen Aufschmelzung in der Frühphase ihrer Geschichte. Durch die Gravitation hat sich dabei das schwerere ... -
Akusto-optische Signalverarbeitung mit dem Material Rutil
(Univ. Köln, 2006)In der Radioastronomie und in der Atmosphärenforschung erlauben moderne Heterodyn-Empfangssysteme die Beobachtung von Atom- und Molekülübergangslinien mit ZF-Bandbreiten von bis zu 4 GHz. Zur Abdeckung dieser großen ... -
Algorithmic Differentiation for Sensitivity Analysis in Cloud Microphysics
(Journal of Advances in Modeling Earth Systems, 2022-07-12)The role of clouds for radiative transfer, precipitation formation, and their interaction with atmospheric dynamics depends strongly on cloud microphysics. The parameterization of cloud microphysical processes in weather ... -
Alternating Emission Features in Io's Footprint Tail: Magnetohydrodynamical Simulations of Possible Causes
(Journal of Geophysical Research: Space Physics, 2022-04-28)Io's movement relative to the plasma in Jupiter's magnetosphere creates Alfvén waves propagating along the magnetic field lines which are partially reflected along their path. These waves are the root cause for auroral ... -
Alternating North‐South Brightness Ratio of Ganymede's Auroral Ovals: Hubble Space Telescope Observations Around the Juno PJ34 Flyby
(Geophysical Research Letters, 2022-12-12)We report results of Hubble Space Telescope observations from Ganymede's orbitally trailing side which were taken around the flyby of the Juno spacecraft on 7 June 2021. We find that Ganymede's northern and southern auroral ... -
An ambitious new mission seeks the origin of the moons of Mars
(Proceedings of the National Academy of Sciences, 2023)Two mysterious moons whirl around Mars. Despite the many missions to the planet, not a single one has focused on its satellites — or, rather, not a single successful one. Three previous Martian moon explorers, launched by ... -
An adaptive shallow water model on the sphere
(Univ. Bremen, 2009)This thesis describes the adaptive shallow water model PLASMA-FEMmE. It solves on the sphere the shallow water equations, the prototype for partial differential equations in atmospheric modeling, using a semi-implicit ... -
An application of WKBJ theory for triad interactions of internal gravity waves in varying background flows
(Quarterly Journal of the Royal Meteorological Society, 2021-01-22)Motivated by the question of whether and how wave–wave interactions should be implemented into atmospheric gravity‐wave parametrizations, the modulation of triadic gravity‐wave interactions by a slowly varying and vertically ... -
An Asthenospheric Upwelling Beneath Central Mongolia — Implications for Intraplate Surface Uplift and Volcanism
(Acta Geologica Sinica ‐ English Edition, 2021-11-27)Intraplate processes, such as continental surface uplift and intraplate volcanism, are enigmatic and the underlying mechanisms responsible are not fully understood. Central Mongolia is an ideal natural laboratory for ... -
An Empirical Model of the Equatorial Electron Pitch Angle Distributions in Earth's Outer Radiation Belt
(Space Weather, 2022-09-20)In this study, we present an empirical model of the equatorial electron pitch angle distributions (PADs) in the outer radiation belt based on the full data set collected by the Magnetic Electron Ion Spectrometer (MagEIS) ... -
An endless summer: 2018 heat episodes in Europe in the context of secular temperature variability and change
(International Journal of Climatology, 2020)The year 2018 was affected by very long-lasting, stable summer conditions in vast parts of Europe, in many regions already starting in April and lasting until October. We investigate the thermal characteristics of this ... -
An Energy Conserving Vlasov Solver That Tolerates Coarse Velocity Space Resolutions: Simulation of MMS Reconnection Events
(Journal of Geophysical Research: Space Physics, 2022-02-11)Vlasov solvers that operate on a phase‐space grid are highly accurate but also numerically demanding. Coarse velocity space resolutions, which are largely unproblematic in particle‐in‐cell (PIC) simulations, can lead to ... -
An evaluation of operational and research weather forecasts for southern West Africa using observations from the DACCIWA field campaign in June–July 2016
(Quarterly Journal of the Royal Meteorological Society, 2020)Reliable and accurate weather forecasts, particularly those of rainfall and its extremes, have the potential to improve living conditions in densely populated southern West Africa (SWA). The limited availability of ... -
An Improved Model of the Earth’s Static Gravity Field Solely Derived from Reprocessed GOCE Data
(Surveys in Geophysics, 2021-01-18)After it was found that the gravity gradients observed by the Gravity field and steady-state Ocean Circulation Explorer (GOCE) satellite could be significantly improved by an advanced calibration, a reprocessing project ...