Auflistung Geophysik, Extraterrestische Forschung nach Titel
Anzeige der Dokumente 494-513 von 1221
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Impact of flex power on GPS Block IIF differential code biases
(GPS Solutions, 2020-07-08)GPS Block IIF satellites are able to redistribute the transmit power between the signal components. This ability is called flex power, and it has been developed as a remedy against jamming. Since it is operationally not ... -
Impact of Intraseasonal Waves on Angolan Warm and Cold Events
(Journal of Geophysical Research: Oceans, 2021-04-28)The intraseasonal variability of the tropical eastern boundary upwelling region in the Atlantic Ocean is investigated using multiyear mooring and satellite data. Pronounced oscillations of alongshore velocity and sea level ... -
Impact of Martian Crustal Magnetic Field on the Ion Escape
(Journal of Geophysical Research: Space Physics, 2020)Based on the Mars Atmosphere and Volatile EvolutioN (MAVEN) observations, we have analyzed the role of the crustal magnetic field on ion loss driven by the direct interaction of the solar wind with the Mars ionosphere. ... -
Impact of Parametrizing Microphysical Processes in the Jet and Vortex Phase on Contrail Cirrus Properties and Radiative Forcing
(Journal of Geophysical Research: Atmospheres, 2022-12-07)Contrail ice nucleation and ice crystal loss during the vortex phase control ice crystal numbers in young contrails and can have a strong impact on the properties and the life cycle of contrail cirrus. For current soot ... -
Impact of robot antenna calibration on dual-frequency smartphone-based high-accuracy positioning: a case study using the Huawei Mate20X
(GPS Solutions, 2020-11-10)The access to Android-based Global Navigation Satellite Systems (GNSS) raw measurements has become a strong motivation to investigate the feasibility of smartphone-based positioning. Since the beginning of this research, ... -
Impact of the Juan Fernandez Ridge on the Pampean Flat Subduction Inferred From Full Waveform Inversion
(Geophysical Research Letters, 2021-11-08)A new seismic model for crust and upper mantle of the south Central Andes is derived from full waveform inversion, covering the Pampean flat subduction and adjacent Payenia steep subduction segments. Focused crustal ... -
Impact of Tropospheric Ties on UT1‐UTC in GNSS and VLBI Integrated Solution of Intensive Sessions
(Journal of Geophysical Research: Solid Earth, 2022-11-11)Very Long Baseline Interferometry (VLBI) intensive (INT) sessions are critical for the rapid determination and densification of Universal Time 1‐Coordinate Universal Time (UT1‐UTC), which plays an important role in satellite ... -
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 ... -
Impacts of the Desiccation of the Aral Sea on the Central Asian Dust Life‐Cycle
(Journal of Geophysical Research: Atmospheres, 2022-11-06)The formation of the Aralkum (Aral Desert), following the severe desiccation of the former Aral Sea since the 1960s, has created what may be regarded as one of the world's most significant anthropogenic dust sources. In ... -
Implementing the HYbrid MAss flux Convection Scheme (HYMACS) in ICON – First idealized tests and adaptions to the dynamical core for local mass sources
(Quarterly Journal of the Royal Meteorological Society, 2020)In this study, the Hybrid MAss flux Convection Scheme (HYMACS) is implemented in the ICOsahedral Non-hydrostatic (ICON) weather prediction model. In contrast to conventional convection parametrization schemes, the convective ... -
Importance of Surface Roughness for the Local Biogeophysical Effects of Deforestation
(Journal of Geophysical Research: Atmospheres, 2019)Deforestation influences surface properties such as surface roughness, resulting in changes in the surface energy balance and surface temperature. Recent studies suggest that the biogeophysical effects are dominated by ... -
Improving Atmospheric Angular Momentum Forecasts by Machine Learning
(Earth and Space Science, 2021-12-20)Earth angular momentum forecasts are naturally accompanied by forecast errors that typically grow with increasing forecast length. In contrast to this behavior, we have detected large quasi‐periodic deviations between ... -
Improving crosshole ground‐penetrating radar full‐waveform inversion results by using progressively expanded bandwidths of the data
(Near Surface Geophysics, 2021-05-05)In the last decade, time‐domain crosshole ground‐penetrating radar full‐waveform inversion has been applied to several different test sites and has improved the resolution and reconstruction of subsurface properties. The ... -
Improving solar radiation pressure modeling for GLONASS satellites
(Journal of Geodesy, 2020-07-25)The Russian Global Navigation Satellite System (GLONASS) satellites have a stretched body shape and take a specific attitude mode inside the eclipse. Based on previous studies, the new Empirical CODE orbit model (ECOM2) ... -
Improving the ocean and atmosphere in a coupled ocean–atmosphere model by assimilating satellite sea-surface temperature and subsurface profile data
(Quarterly Journal of the Royal Meteorological Society, 2020)An ensemble-based data assimilation framework for a coupled ocean–atmosphere model is applied to investigate the influence of assimilating different types of ocean observations on the ocean and atmosphere simulation. The ... -
Improving the Vertical Modeling of Tropospheric Delay
(Geophysical Research Letters, 2022-03-08)Accurate tropospheric delays from Numerical Weather Models (NWM) are an important input to space geodetic techniques, especially for precise real‐time Global Navigation Satellite Systems, which are indispensable to earthquake ... -
Impuls- und Wärmeaustausch zwischen der Atmosphäre und dem eisbedeckten Ozean
(Univ. Bremen, 2001)Turbulence, ice ridge, polynja, drag coefficient. - Polarstern (PS) cruise ARK XII led into the Laptev Sea and into the Kara Sea. Measurements of atmospheric processes within the polar surface layer were performed by a ... -
In situ sounding of radiative flux profiles through the Arctic lower troposphere
(Bulletin of Atmospheric Science and Technology, 2020-05-15)In situ profiles and fixed-altitude time series of all four components of net radiation were obtained at Ny-Ålesund, Svalbard (78.9° N, 11.9° E), in the period May 04–21, 2015. Measurements were performed using adapted ... -
Increasing Resolution and Resolving Convection Improve the Simulation of Cloud-Radiative Effects Over the North Atlantic
(Journal of Geophysical Research: Atmospheres, 2020)Clouds interact with atmospheric radiation and substantially modify the Earth's energy budget. Cloud formation processes occur over a vast range of spatial and temporal scales, which make their thorough numerical representation ... -
Indentation methods in experimental rock deformation
(Univ. Bochum, 2002)In dieser Studie wird das Potential von Indentationsexperimenten bei erhöhten Temperaturen in der Gesteinsmechanik erkundet. Mikrohärtemessungen mit einem pyramidenförmigen Indenter werden an Olivin- und Klinopyroxen-Körnern ...