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Showing 4051 to 4100 of 22070 works
An overview of aerosol properties in clear and cloudy sky based on the CALIPSO observations
A full understanding of the climatological properties of aerosols is an important step towards characterizing their effects on the regional and global climate. Utilizing the obser…
Hydrothermal friction experiments on simulated basaltic fault gouge and implications for megathrust earthquakes
Nucleation of earthquake slip at the plate boundary fault (décollement) in subduction zones has been widely linked to the frictional properties of subducting sedimentary facies. H…
Precipitating electron energy spectra and auroral power estimation by incoherent scatter radar with high temporal resol…
This study presents an improved method to estimate differential energy flux, auroral power and field-aligned current of electron precipitation from incoherent scatter radar data. …
35-years decadal changes in planform morphology of the Niger and Benue Rivers confluence, West Africa
In this study, time-lapse data covering 35 years record (1987-2022) of publicly available Landsat imageries and shuttle radar topography mission DEM are used to investigate the ch…
Droughts can reduce the nitrogen retention capacity of catchments
In 2018–2019, Central Europe experienced an unprecedented multi-year drought with severe impacts on society and ecosystems. In this study, we analyzed the impact of this drought o…
Elastic Interaction between a Vortex Dipole and an Axisymmetrical Vortex in Quasi-Geostrophic Ocean Dynamics
We investigate numerically the elastic interaction between a dipole and an axisymmetrical vortex in inviscid isochoric two-dimensional (2D), as well as in three-dimensional (3D) f…
Upgrades to the MAVEN Echelle Data Reduction Pipeline: New Calibration Standard and Improved Faint Emission Detection A…
The Mars Atmosphere and Volatile Evolution (MAVEN) mission instrument suite includes an ultraviolet echelle spectrograph with high-spectral resolution designed to resolve D and H …
Stability Characteristics of the Mesopause Region above the Andes
We report a detailed analysis of characteristics of stability based on high-resolution temperature and horizontal wind measurement made with a Na lidar at the Andes Lidar Observat…
The Ribosomal Protein Cluster Organization In Asgard Archaea -- An Analysis
Introduction: It has been proposed that the recently discovered superphylum of Asgard archaea may represent a historical link/bridge between the Archaea and Eukarya. The arrangeme…
A large subsoil carbon sink in the United States Corn Belt
Current soil C inventories focus on surface layers although over half of soil C is found below 20 cm. Recent and ongoing changes in agricultural management, crop productivity, and…
Spring Phytoplankton Distributions and Primary Productivity in Waters off Northern Norway
• Phytoplankton distributions and primary productivity were assessed off the northern coast of Norway in spring. Biomass and productivity were greatest off the continental shelf d…
Lithospheric Imaging through Reverberant Layers: Sediments, Oceans, and Glaciers
The Earth, in large portions, is covered in oceans, sediments, and glaciers. High-resolution body wave imaging in such environments often suffers from severe reverberations, that …
Something missing: Andean cryosphere research comic (version: Maroc darija Arab)
A short watercolor comic about the broken connection between humans and mountains. Funded by Sharing Science grants of the AGU, 2021.
Late Cretaceous-early Paleogene extensional ancestry of the Harcuvar and Buckskin-Rawhide metamorphic core complexes, w…
Metamorphic core complexes in the western North American Cordillera are commonly interpreted as the result of a single phase of large-magnitude extension during the middle to late…
SASSIER22: Full-waveform tomography of the eastern Indonesian region that includes surface topography and the fluid oce…
We present a new 3-D seismic structural model of the eastern Indonesian region and its surroundings from full-waveform inversion (FWI) that exploits seismic data filtered at perio…
The evolving deformation field in central Afar from two decades of InSAR observations: Implications for the decoupling …
Located at the meeting point between the Red Sea Ridge, the East African Rift and the Aden Ridge, the Afar Depression is characterized by contrasting modes of deformation with foc…
Crosshole Ground-Penetrating Radar in Clay-Rich Quaternary deposits: Towards Characterization of High-Loss Media
Knowing the centimeter- to meter-scale distribution of sand in clayey deposits is important for determining the dominating water flow pathways. Borehole information has a high ver…
Interpretable Deep Learning for Probabilistic MJO Prediction
The Madden–Julian Oscillation (MJO) is the dominant source of sub-seasonal variability in the tropics. It consists of an Eastward moving region of enhanced convection coupled to c…
Density staircases generated by symmetric instability in a cross-equatorial deep western boundary current
Density staircases are observed in an idealised model of a deep western boundary current upon crossing the equator. We propose that the staircases are generated by the excitement …
Interpretation of net surface heat fluxes and Meridional Overturning Circulations in global coupled UK-HadGEM3 climate …
The annual mean net surface heat fluxes (NSHFs) from the ocean to the atmosphere play an important role in driving both atmospheric circulations and oceanic meridional overturning…
The Habitability of Venus and a Comparison to Early Earth
Venus today is inhospitable at the surface, its average temperature of 750 K being incompatible to the existence of life as we know it. However, the potential for past surface hab…
Direct observations of electron firehose fluctuations in the magnetic reconnection outflow
Electron temperature anisotropy-driven instabilities such as the electron firehose instability (EFI) are especially significant in space collisionless plasmas, where collisions ar…
Near-Real-Time analysis of the ionospheric response to the 15 January 2022 Hunga Tonga-Hunga Ha'apai volcanic eruption
We present a near-real-time (NRT) scenario of analysis of ionospheric response to the 15 January 2022 Hunga Tonga-Hunga Ha’apai eruption by using GNSS data. We introduce a new met…
The role of subtropical Rossby waves in amplifying the divergent circulation of the Madden Julian Oscillation
The composite structure of the Madden-Julian Oscillation (MJO) has long been known to feature pronounced Rossby gyres in the subtropical upper troposphere, whose existence can be …
Nine Martian Years of polar caps observations by SPICAM-IR
SPICAM-IR, an AOTF spectrometer onboard Mars Express spacecraft with a resolving power of 2,000 covering the spectral range 1-1.7 μm has been observing Mars since 2004. In this wa…
Cycles-L: A coupled, 3-D, land surface, hydrologic, and agroecosystem landscape model
Managing landscapes to increase agricultural productivity and environmental stewardship requires spatially distributed models that can integrate data and operate at spatial and te…
Calculating the Electron Diffusion Region Aspect Ratio with Magnetic Field Gradients
We calculate the aspect ratio of the electron diffusion region (EDR) during symmetric magnetic reconnection using magnetic field gradients measured by the Magnetospheric Multiscal…
Observation of corona discharges and cloud microphysics at the top of thunderstorm cells in cyclone Fani
Blue corona discharges are bursts of streamers often observed at the top of thunderclouds, but the cloud conditions that facilitate them are not well known. Here we present observ…
Machine learning-based detection of weather fronts and associated extreme precipitation in historical and future climat…
Extreme precipitation events, including those associated with weather fronts, have wide-ranging impacts across the world. Here we use a deep learning algorithm to identify weather…
Garbage-In Garbage-Out (GIGO): The Use and Abuse of Combustion Modeling and Recent U.S. Spacelaunch Environmental Impac…
Although adequately detailed kerosene chemical-combustion Arrhenius reaction-rate suites were not readily available for combustion modeling until ca. the 1990’s (e.g., Marinov [19…
Influence of the Interdecadal Pacific Oscillation on Super Cyclone Activities over the Bay of Bengal During the Primary…
An obvious interdecadal change is measured in the super cyclones (SCs, categories 4 and 5) that occur from Oct-Nov over the Bay of Bengal (BoB). This change may be modulated by th…
Complexity Analysis of Three-dimensional Stochastic Discrete Fracture Networks with Fractal and Multifractal Techniques
The fractal dimension and multifractal spectrum can characterize the complexity of fracture sets. However, studies of impacts of fracture geometries on their fractal and multifrac…
Respiration rate scales inversely with sinking speed of settling marine aggregates
Sinking marine particles have been studied for a long time to understand its role in carbon sequestration. Traditionally, sinking speed and respiration rates have been treated as …
Climatology of Traveling Ionospheric Disturbances Observed by HamSCI Amateur Radio with Connections to Geospace and Neu…
Traveling Ionospheric Disturbances (TIDs) are propagating variations in ionospheric electron densities that affect radio communications and can help with understanding energy tran…
Towards a New Baseline of Vertical Land Motions in the Chesapeake Bay Using GNSS and InSAR
Relative sea-level rise is a major coastal hazard affecting about half the population of the United States. The Chesapeake Bay is characterized by the fastest rate of sea-level ri…
Intercalibration of DMSP-OLS and NPP-VIIRS to Develop Enhanced Night-time Light Time-series for Evaluating the Urban De…
Defense Meteorological Satellite Program-Operational Line scan System (DMSP-OLS) and Suomi National Polar-orbiting Partnership-Visible Infrared Imaging Radiometer Suite (NPP-VIIRS…
Statistical analysis of wave propagation properties of equatorial noise observed at low altitudes
Equatorial noise is an electromagnetic emission with line spectral structure, predominantly located in the vicinity of the geomagnetic equatorial plane at radial distances ranging…
Impact of Ocean Data Assimilation on Climate Predictions with ICON-ESM
We develop a data assimilation scheme with the Icosahedral Non-hydrostatic Earth System Model (ICON-ESM) for operational decadal and seasonal climate predictions at the German wea…
Effect of surface hydraulics and salmon redd size on redd induced hyporheic exchange
Salmonids bury their eggs in hyporheic streambed gravel, forming an egg nest, called a redd, characterized by a pit and a hump topography resembling a dune. Embryos’ survival depe…
Cold Weather Teleconnections from Future Arctic Sea Ice Loss and Ocean Warming
Rapid Arctic warming and decline in sea ice have been observed in recent decades. These trends will likely continue, potentially changing winter extremes elsewhere in the Northern…
Data Fusion of AIRS and CrIMSS Near Surface Air Temperature
We present a near surface air temperature (NSAT) fused data product over the contiguous United States using Level 2 data from the Atmospheric Infrared Sounder (AIRS), on the Aqua …
A thermodynamic nonequilibrium model for preferential infiltration and refreezing of melt in snow
The transport of meltwater through porous snow is a fundamental process in hydrology that remains poorly understood but essential for more robust prediction of how the cryosphere …
Sunward Ion Flows in the Martian Magnetotail: Mars Express Observations
We investigate sunward planetary ions in the Martian magnetotail that potentially reduce the amount of escaping ions. The global properties of sunward flows in the Martian magneto…
Temperature: a key driver of Earth’s habitability over the last billion years
The habitability and ecology of Earth is fundamentally shaped by surface temperature, but the temperature history of our planet is not easily reconstructed, especially before the …
Climate change risk and farmers’ behavior: Testing main driving factors from social learning in northern Italy
Because climate change is both a physical and social phenomenon, personal experience has been considered the first step to entail how individuals perceive climate change risk and …
Seasonality of the QBO Impact on Equatorial Clouds
The Quasi-Biennial Oscillation (QBO) dominates the interannual variability in the tropical lower stratosphere and is characterized by the descent of alternating easterly and weste…
Shift peaks of PAH-associated health risks from East Asia to South Asia and Africa in the future
Polycyclic aromatic hydrocarbons (PAHs), emitted from combustion of biofuels and fossil fuels, are toxic compounds and known to cause lung-cancer. Integrating a global atmospheric…
A Four-Dimensional Ensemble-Variational (4DEnVar) Data Assimilation System for Global NWPs: System Description and Prim…
A four-dimensional ensemble-variational (4DEnVar) data assimilation (DA) system was developed for global numerical weather predictions (NWPs). Instead of using the adjoint techniq…
Grain size reduction by plug flow in the wet oceanic upper mantle explains the asthenosphere's low seismic Q zone
The prominent seismic low-velocity zone (LVZ) in the oceanic low-viscosity asthenosphere is approximately coincident with a zone of high seismic attenuation (or low seismic Q). Sm…
Internal tides responsible for lithogenic inputs along the Iberian continental slope
This study proposes new insights for the interpretation of GEOVIDE particle measurements. Potentiel resuspension sites due to internal tides (ITs) have been identified along the w…
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