Geophysik, Extraterrestische Forschung
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Attribution of Observed Recent Decrease in Low Clouds Over the Northeastern Pacific to Cloud‐Controlling Factors
; ; ; (Geophysical Research Letters, 2022-01-28)
Marine low clouds cool the Earth's climate, with their coverage (LCC) being controlled by their environment. Here, an observed significant decrease of LCC in the northeastern Pacific over the past two decades is linked ... -
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 ... -
The Vertical Structure and Entrainment of Subglacial Melt Water Plumes
; ; ; ; ; (Journal of Advances in Modeling Earth Systems, 2022-03-14)
Basal melting of marine‐terminating glaciers, through its impact on the forces that control the flow of the glaciers, is one of the major factors determining sea level rise in a world of global warming. Detailed quantitative ... -
Rupture Heterogeneity and Directivity Effects in Back‐Projection Analysis
; ; ; ; ; ; ; (Journal of Geophysical Research: Solid Earth, 2022-03-03)
The back projection method is a tremendously powerful technique for investigating the time dependent earthquake source, but its physical interpretation is elusive. We investigate how earthquake rupture heterogeneity and ... -
Prehistoric chamber tombs or geological pitfall? A multimethod case study from Ancient Aigeira with a focus on seismic full‐waveform inversion
; ; ; ; (Archaeological Prospection, 2021-07-16)
We show an extensive multimethod geophysical study of focusing on some enigmatic subsurface structures found at Ancient Aigeira (N Peloponnes, Greece) that could be interpreted either as prehistoric chamber tombs or complex ... -
The Arctic Ocean in CMIP6 Models: Biases and Projected Changes in Temperature and Salinity
; ; ; ; ; ; (Earth's Future, 2022-02-11)
We examine the historical evolution and projected changes in the hydrography of the deep basin of the Arctic Ocean in 23 climate models participating in the Coupled Model Intercomparison Project Phase 6 (CMIP6). The ... -
From the Top of Martian Olympus to Deep Craters and Beneath: Mars Radiation Environment Under Different Atmospheric and Regolith Depths
; ; ; ; (Journal of Geophysical Research: Planets, 2022-02-27)
In preparation for future human habitats on Mars, it is important to understand the Martian radiation environment. Mars does not have an intrinsic magnetic field and Galactic cosmic ray (GCR) particles may directly propagate ... -
Assessment of the Precision of Spectral Model Turbulence Analysis Techniques Using Direct Numerical Simulation Data
; ; ; (Journal of Geophysical Research: Atmospheres, 2022-02-17)
The spectral model turbulence analysis technique is widely used to derive kinetic energy dissipation rates of turbulent structures (ɛ) from different in situ measurements in the Earth's atmosphere. The essence of this ... -
Analytical Solutions for Gravity Changes Caused by Triaxial Volumetric Sources
; (Geophysical Research Letters, 2022-04-18)
Volcanic crises are often associated with magmatic intrusions or the pressurization of magma chambers of various shapes. These volumetric sources deform the country rocks, changing their density, and cause surface uplift. ... -
Ionospheric Corrections for Satellite Altimetry ‐ Impact on Global Mean Sea Level Trends
; (Earth and Space Science, 2022-04-25)
Atmospheric delay corrections for satellite altimetry measurements are essential for deriving highly accurate sea surface heights and reliable global mean sea level (GMSL) trend estimates. A commonly used method to correct ... -
Anomalous Reconnection Layer at Earth's Dayside Magnetopause
; ; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Space Physics, 2021-09-24)
Observations by the Magnetospheric Multiscale spacecraft (MMS) of an unusual layer, located between the dayside magnetosheath and the magnetosphere, alternating with encounters with the magnetosheath during an extended ... -
Lagrangian Coherent Structures and Vortex Formation in High Spatiotemporal‐Resolution Satellite Winds of an Atmospheric Kármán Vortex Street
; ; ; ; (Journal of Geophysical Research: Atmospheres, 2021-10-06)
Recent advances in geostationary imaging have enabled the derivation of high spatiotemporal‐resolution cloud‐motion winds for the study of mesoscale unsteady flows. Due to the general absence of ground truth, the quality ... -
Observed and Simulated Variability of Droplet Spectral Dispersion in Convective Clouds Over the Amazon
; ; ; ; ; ; ; ; ; ; ; (Journal of Geophysical Research: Atmospheres, 2021-10-15)
In this study, the variability of the spectral dispersion of droplet size distributions (DSDs) in convective clouds is investigated. Analyses are based on aircraft measurements of growing cumuli near the Amazon basin, and ... -
Late Holocene Climate Changes in the Altai Region Based on a First High‐Resolution Biomarker Isotope Record From Lake Khar Nuur
; ; ; ; ; ; ; ; (Geophysical Research Letters, 2021-10-19)
The Late Holocene marks a substantial cultural and economic transition in the eastern Eurasian Steppe and Altai Region with the dispersal of nomadic pastoralism. So far, paleoclimate conditions during this time remain ... -
Beating 1 Sievert: Optimal Radiation Shielding of Astronauts on a Mission to Mars
; ; ; ; (Space Weather, 2021-09-03)
Space radiation is one of the main concerns in planning long‐term human space missions. There are two main types of hazardous radiation: solar energetic particles (SEP) and galactic cosmic rays (GCR). The intensity and ... -
Spatio‐Temporal Evolution of Earthquake Static Stress Drop Values in the 2016–2017 Central Italy Seismic Sequence
; ; (Journal of Geophysical Research: Solid Earth, 2021-11-11)
The static stress drop of an earthquake is an indicator of the stress state of a specific fault before rupture initiation. The stress state is primarily controlled by the ambient stress field, fault strength, fault complexity, ... -
Geological History of Southeastern Gorgonum Chaos, Mars: A Story of Water and Wind
; ; (Journal of Geophysical Research: Planets, 2021-09-10)
Gorgonum Chaos is part of the Eridania paleolake in Terra Sirenum and displays a number of prominent light‐toned morphological features that bear a record of the regional climatic conditions throughout most of Martian ... -
Three‐dimensional investigation of an open‐ and a closed‐system Pingo in northwestern Canada
; (Permafrost and Periglacial Processes, 2021-05-13)
The present study presents three‐dimensional investigations of a hydrostatic pingo in the Mackenzie Delta region and a hydraulic pingo in the Ogilvie Mountains and contributes to a better understanding about the internal ... -
Reanalysis in Earth System Science: Toward Terrestrial Ecosystem Reanalysis
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; (Reviews of Geophysics, 2021-08-18)
A reanalysis is a physically consistent set of optimally merged simulated model states and historical observational data, using data assimilation. High computational costs for modeled processes and assimilation algorithms ... -
Uncertainties in Kelvin Waves in ECMWF Analyses and Forecasts: Insights From Aeolus Observing System Experiments
; ; (Geophysical Research Letters, 2021-11-16)
The European Space Agency Earth Explorer mission Aeolus with the first spaceborne Doppler Wind Lidar onboard provides global coverage of wind profiles twice per day. This paper discusses the impact of assimilating Aeolus ... -
Real‐Time Monitoring of Ionosphere VTEC Using Multi‐GNSS Carrier‐Phase Observations and B‐Splines
; ; ; ; (Space Weather, 2021-10-11)
Monitoring the Vertical Total Electron Content (VTEC) of the ionosphere is important for applications ranging from navigation to detection of space weather events. Therefore, emerging efforts have been made by several ... -
The Onset of a Substorm and the Mating Instability
; (Journal of Geophysical Research: Space Physics, 2021-10-19)
The paper underlines the view that the appearance of beading and its nonlinear growth in the onset arc occurs independently from the onset of reconnection in the tail at about 20 RE. Both events follow from an extreme ... -
A nonlocal three‐dimensional turbulence parameterization (NLT3D) for numerical weather prediction models
; (Quarterly Journal of the Royal Meteorological Society, 2021-10-29)
With increasing resolution of numerical weather prediction (NWP) models, classical subgrid‐scale processes become increasingly resolved on the model grid. In particular, turbulence in the planetary boundary layer (PBL) is ... -
Characterization and Evolution of Organized Shallow Convection in the Downstream North Atlantic Trades
; ; (Journal of Geophysical Research: Atmospheres, 2021-08-26)
Four previously identified patterns of meso‐scale cloud organization in the trades — called Sugar, Gravel, Flowers, and Fish — are studied using long‐term records of ground‐based measurements, satellite observations and ... -
Variability of the precipitation over the Tianshan Mountains, Central Asia. Part I: Linear and nonlinear trends of the annual and seasonal precipitation
; ; (International Journal of Climatology, 2021-06-21)
The Tianshan Mountains, with their status as ‘water tower’, receive quantities of precipitation that are among the highest in Central Asia. There are considerable knowledge gaps regarding the understanding of spatial and ...
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