Auflistung Geophysik, Extraterrestische Forschung nach Erscheinungsdatum
Anzeige der Dokumente 1-20 von 760
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Earth’s Albedo and Its Symmetry
; (AGU Advances, 2021-08-11)
The properties of Earth's albedo and its symmetries are analyzed using twenty years of space‐based Energy Balanced And Filled product of Clouds and the Earth's Radiant Energy System measurements. Despite surface asymmetries, ... -
Spring‐Fall Asymmetry in VLF Amplitudes Recorded in the North Atlantic Region: The Fall‐Effect
; ; ; ; ; (Geophysical Research Letters, 2021-08-10)
A spring‐fall asymmetry is observed in daytime amplitude values of very low frequency (VLF) radio wave signals propagating over the North Atlantic during 2011–2019. We explore the processes behind this asymmetry by comparing ... -
Near Surface Properties of Martian Regolith Derived From InSight HP3‐RAD Temperature Observations During Phobos Transits
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; (Geophysical Research Letters, 2021-08-09)
We use the Martian surface temperature response to Phobos transits observed next to the InSight lander in Elysium Planitia to constrain the thermal properties of the uppermost layer of regolith. Modeled transit lightcurves ... -
Spatial and Temporal Planetary Boundary Layer Moisture‐Source Variability of Crimean Peninsula Precipitation
; ; (Earth and Space Science, 2021-08-06)
The atmospheric water cycle is a key component of the global energy and moisture exchange. In order to gain better understanding of the atmospheric processes and temporal variability and trends affecting precipitation in ... -
A Universal Approach for the Non‐Iterative Parametrization of Near‐Surface Turbulent Fluxes in Climate and Weather Prediction Models
;; ; (Journal of Advances in Modeling Earth Systems, 2021-08-04)
Weather prediction and climate simulations need reliable parameterizations of turbulent fluxes in the stable surface layer. Especially in these conditions, the uncertainties of such parametrizations are still large. Most ... -
Correlation Based Time Evolution of the Archeomagnetic Field
; ; ; (Journal of Geophysical Research: Solid Earth, 2021-07-16)
In a previous study, a new snapshot modeling concept for the archeomagnetic field was introduced (Mauerberger et al., 2020, https://doi.org/10.1093/gji/ggaa336). By assuming a Gaussian process for the geomagnetic potential, ... -
Piecewise Evolutionary Spectra: A Practical Approach to Understanding Projected Changes in Spectral Relationships Between Circulation Modes and Regional Climate Under Global Warming
; (Geophysical Research Letters, 2021-07-16)
Regional climate variability is strongly related to large‐scale circulation modes. However, little is known about changes in their spectral characteristics under climate change. Here, we introduce piecewise evolutionary ... -
Thermal Conductivity of the Martian Soil at the InSight Landing Site From HP3 Active Heating Experiments
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Planets, 2021-07-14)
The heat flow and physical properties package (HP3) of the InSight Mars mission is an instrument package designed to determine the martian planetary heat flow. To this end, the package was designed to emplace sensors into ... -
Magnetic Surveys With Unmanned Aerial Systems: Software for Assessing and Comparing the Accuracy of Different Sensor Systems, Suspension Designs and Compensation Methods
; ; ; (Geochemistry, Geophysics, Geosystems, 2021-07-13)
A typical problem for magnetic surveys with small Unmanned Aerial Systems (sUAS) is the heading error caused by undesired magnetic signals that originate from the aircraft. This can be addressed by suspending the magnetometers ... -
Upper‐level trajectories in the prototype problem for tropical cyclone intensification
; (Quarterly Journal of the Royal Meteorological Society, 2021-07-12)
Data from an idealized three‐dimensional numerical simulation of tropical cyclone intensification are used to calculate Lagrangian air parcel trajectories emanating from the inflow layer that develops beneath the ... -
Quasi‐4‐Day Wave: Atmospheric Manifestation of the First Symmetric Rossby Normal Mode of Zonal Wavenumber 2
; ; (Journal of Geophysical Research: Atmospheres, 2021-07-07)
This paper describes global characteristics of the westward‐propagating planetary wave with a period of ∼4 days and zonal wavenumber 2, here referred to as quasi‐4‐day wave (Q4DW), which is considered to be a manifestation ... -
Preliminary Statistical Comparisons of Spin‐Averaged Electron Data From Arase and Van Allen Probes Instruments
;; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Space Physics, 2021-07-06)
Following the end of the Van Allen Probes mission, the Arase satellite offers a unique opportunity to continue in‐situ radiation belt and ring current particle measurements into the next solar cycle. In this study we compare ... -
Deep Emulators for Differentiation, Forecasting, and Parametrization in Earth Science Simulators
; (Journal of Advances in Modeling Earth Systems, 2021-06-28)
To understand and predict large, complex, and chaotic systems, Earth scientists build simulators from physical laws. Simulators generalize better to new scenarios, require fewer tunable parameters, and are more interpretable ... -
Results of the Electron Drift Instrument on Cluster
; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Space Physics, 2021-06-23)
The electron drift instrument (EDI) on Cluster pioneered a new method of measuring electric fields, using a beam of electrons to sample the drift velocity over a km‐scale gyro orbit. The technique is especially well suited ... -
Simulation of Record Arctic Stratospheric Ozone Depletion in 2020
; (Journal of Geophysical Research: Atmospheres, 2021-06-17)
In the Arctic winter/spring of 2019/2020, stratospheric temperatures were exceptionally low until early April and the polar vortex was very stable. As a consequence, significant chemical ozone depletion occurred in the ... -
Seismic Velocity Variations in a 3D Martian Mantle: Implications for the InSight Measurements
;; ; ; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Planets, 2021-06-17)
We use a large data set of 3D thermal evolution models to predict the distribution of present‐day seismic velocities in the Martian interior. Our models show a difference between maximum and minimum S wave velocity of up ... -
Predicting Geothermal Heat Flow in Antarctica With a Machine Learning Approach
; (Journal of Geophysical Research: Solid Earth, 2021-06-10)
We present a machine learning approach to statistically derive geothermal heat flow (GHF) for Antarctica. The adopted approach estimates GHF from multiple geophysical and geological data sets, assuming that GHF is substantially ... -
Polar Stratospheric Clouds: Satellite Observations, Processes, and Role in Ozone Depletion
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; (Reviews of Geophysics, 2021-06-10)
Polar stratospheric clouds (PSCs) play important roles in stratospheric ozone depletion during winter and spring at high latitudes (e.g., the Antarctic ozone hole). PSC particles provide sites for heterogeneous reactions ... -
The Arctic Polar Vortex Response to Volcanic Forcing of Different Strengths
; ; (Journal of Geophysical Research: Atmospheres, 2021-06-01)
Tropical volcanic eruptions injecting sulfur into the stratosphere are assumed to not only scatter radiation and cool Earth's surface but also alter atmospheric circulation and in particular to strengthen the stratospheric ... -
The Impact of Solar Activity on Forecasting the Upper Atmosphere via Assimilation of Electron Density Data
; ; ; (Space Weather, 2021-05-20)
This study presents a comprehensive comparison of the impact of solar activity on forecasting the upper atmosphere through assimilation of radio occultation (RO)‐derived electron density (Ne) into a physics‐based model ...