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Showing 3951 to 4000 of 22070 works
The Sugar-to-Flower Shallow Cumulus Transition Under the Influences of Diurnal Cycle and Free-Tropospheric Mineral Dust
A transition from sugar to flower shallow cumuli occurred under a layer of mineral dust on February 2, 2020, during the multinational ATOMIC and EUREC 4 A campaign. Lagrangian lar…
Rate-and-state modeling of injection-induced aseismic slip in the Delaware Basin constrains fault-zone pore pressure ch…
Recent inversions of InSAR ground surface deformation in the Delaware Basin have revealed aseismic slip on conjugate, semi-optimally oriented normal faults. Slip, occurring over 3…
Modeling the yield, biogenic emissions, and soil carbon sequestration outcomes of Brassica carinata grown in the southe…
Sustainable aviation fuels (SAF) produced from lipid feedstocks are an increasingly mature and low-cost option for aviation sector decarbonization. Ethiopian mustard (Brassica car…
The age of evapotranspiration: continental-scale lower-bound constraints from distributed water fluxes
Unlike streamflow, which can be sampled in aggregate at the catchment outlet, evapotranspiration (ET) is spatially dispersed, challenging large-scale age estimation. Here, we intr…
AGU data citation community of practice - Credit for creators of data within collections using the concept of a reliqua…
A gap in community practice on data citation that emerged during the AGU fall meeting 2020 Data FAIR Town Hall, “Why Is Citing Data Still Hard?” with the goal of addressing the us…
3-D Crustal Shear Wave Velocity Model Derived from the Adjoint Waveform Tomography in the Central Japan Island
Adjoint waveform tomography, which is an emerging seismic imaging method for the crust- and global-scale problems, has gained popularity in the past and present decade. This study…
Tidal dispersion in short estuaries
The salinity distribution of an estuary depends on the balance between the river outflow, which is seaward, and a dispersive salt flux, which is landward. The dispersive salt flux…
Conditions for the long term stability of Pluto's azimuthal and latitudinal perihelion librations
Many of the unusual properties of the dwarf planet Pluto's orbit are widely accepted as evidence for the orbital migration of the giant planets in early solar system history. Howe…
Spatial Structure of Far Ultraviolet Martian Dayglow Observed by EMM-EMUS
Mars’ ultraviolet airglow has been used to study its upper atmosphere for over four decades. Identifying variations in emission features has provided information on composition, d…
Fluid Models Are Probably Capable To Simulate Farley-Buneman Instabilities
It is generally accepted that modeling Farley-Buneman instabilities require resolving ion Landau damping to reproduce experimentally observed nonlinear features. Particle in cell …
Seasonal and Interannual Variability of the Tropical Maritime Continent Upper-Ocean Carbon Cycle Over the Last Decade: …
A three-dimensional physical-biogeochemical ocean numerical model with eddy-permitting horizontal resolution was applied to simulate upper-ocean carbon cycle variabilities in the …
Upper plate response to a sequential elastic rebound and slab acceleration during laboratory-scale subduction megathrus…
An earthquake-induced stress drop on a megathrust instigates different responses on the upper plate and slab. We mimic homogenous and heterogeneous megathrust interfaces at the la…
Statistical Analysis of the Differential Deep Penetration of Energetic Electrons and Protons Into the Low L Region (L&l…
Deep penetration of energetic electrons (10s-100s of keV) to low L-shells (L<4), as an important source of inner belt electrons, is commonly observed during geomagnetically active…
Drift velocity partitioning indicates anomalous high velocities for the Indian plate during ~65 Ma
A rapid northward drift of the Indian plate after 130 Ma has also recorded significant plate rotations due to the torques resulting from multiple vectorial forces. Magnetic anomal…
Drift velocity partitioning indicates anomalous high westward drift component for the Indian plate during ~65 + 2 Ma
Rapid northward drift of the Indian plate after 130 Ma has also recorded significant plate rotations due to the torques resulting from multiple vector force components. Seismic to…
Comparative clumped isotope temperature relationships in freshwater carbonates
Lacustrine, riverine, and spring carbonates are archives of terrestrial climate change and are extensively used to study paleoenvironments. Clumped isotope thermometry has been ap…
Magnetostratigraphy and Environmental Magnetism of the Aptian--Albian Boundary of a Sedimentary Core from the Sergipe-A…
The Early Cretaceous was dominated by greenhouse conditions coupled with increased ocean crust production rate, which led to critical climate, geographic and oceanographic changes…
A framework for variational inference and data assimilation of soil biogeochemical models using state space approximati…
Soil biogeochemical models (SBMs) simulate element transfer processes between organic soil pools. These models can be used to specify falsifiable quantitative assertions about soi…
Remnants of the Amalgamation of the East and West Cathaysia Blocks Revealed by a Short-period Dense Seismic Array
To better constrain the amalgamation of the East and West Cathaysia blocks, we deployed a short-period dense seismic array oriented nearly north-south in the southwestern Cathaysi…
Anatomy of an Alpine bedload transport event: a watershed-scale seismic-network perspective
The way Alpine rivers mobilize, convey and store coarse material during high-magnitude events is poorly understood, notably because it is difficult to obtain measurements of bedlo…
SuperDARN observations of the two component model of ionospheric convection
We use a 20 year database of Super Dual Auroral Radar Network (SuperDARN) observations to investigate the two component model of ionospheric convection. A convection pattern is in…
Climatology of clouds containing supercooled liquid in the Western and Central Arctic
Long-term measurements at the U.S. Department of Energy (DOE) Atmospheric Radiation Measurement (ARM) at the North Slope Alaska (NSA) site in Utqiagvik, Alaska and from the Multid…
Seismological evidence for girdled olivine lattice-preferred orientation in oceanic lithosphere and implications for ma…
Seismic anisotropy produced by aligned olivine in oceanic lithosphere offers a window into mid-ocean ridge dynamics. Yet, interpreting anisotropy in the context of grain-scale def…
ARMAS radiation monitoring first results from the surface to LEO
Radiation hazards at commercial aviation altitudes up to suborbital space have been known for decades including those from galactic cosmic rays (GCRs), solar energetic particles (…
Increase of simultaneous soybean failures due to climate change
While soybeans are among the most consumed crops in the world, the majority of its production lies in hotspot regions in the US, Brazil and Argentina. The concentration of soybean…
STEREO/ACE Observations of Suprathermal and Energetic Ion Spikes in Interplanetary Shocks
Interplanetary shocks have been long known sources of suprathermal and energetic ions, and their origin will contribute in unveiling the origin of cosmic rays. Sudden ion intensit…
Validity of analytical solutions for the groundwater response to Earth tides
Harmonic Earth tide components in well water levels have been used to estimate hydraulic and geomechanical subsurface properties. However, the validity of various methods based on…
Velocity of SuperDARN echoes at intermediate radar ranges
The study investigates the relationship between SuperDARN HF radar velocities detected at intermediate ranges of 600-100 km from the radar and the plasma drift. Two approaches are…
Classification of cloud microphysical properties as a function of sea ice concentration conditions during MOSAiC
As part of the (AC)3 Arctic Amplification project, we are studying the influence of specific sea ice conditions like the presence of leads or polynyas on micro- and macrophysical …
The influence of bathymetry over circulation on the Amundsen Sea continental shelf
Ice sheets such as Pine Island and Thwaites Glaciers which terminate at their ice shelves in the eastern Amundsen Sea, West Antarctica, are losing mass faster than most others abo…
The Mobile Atmospheric Profiling Network (MAPNet): Capabilities and Research Applications
The development of mobile profiling facilities at the University of Alabama in Huntsville has led to the formation of the Mobile Atmospheric Profiling Network (MAPNet), which is n…
Clouds in the Vicinity of the Stratopause Observed with Lidars at Mid-latitudes (40.5-41°N) in China
A cloud event in the altitude range of 53-65 km was observed with lidars over Yanqing (40.5°N, 116°E) and Pingquan (41°N, 118.7°E) on 30 October 2018. Clouds with a multilayer str…
Robust determination of rock anisotropy in the laboratory using laser ultrasonics
Robust characterization of rock anisotropy is the preferred laboratory method to support seismic data interpretation in the field. Especially in shale formations, accurate elastic…
Light as a Resource, Stressor and Cue in Mediating Diversity-Productivity Relationships in Forests
In closed-canopy forests, the availability of photosynthetically active light has been a focal point of research, emphasizing the role of light as a resource in limiting carbon as…
Refrigerator as Model of How Earth's Water Manages Solar and Anthropogenic Heats and Controls Global Warming
The role of anthropogenic carbon dioxide (CO 2 ) in global warming is confusing. Experts predict that changes in ocean level and atmospheric temperature will increase considerably…
The GRRIEn Analysis Framework: effective supervised learning of earth surface processes at large spatial scales.
Globally available, georeferenced data from earth observing satellites and coupled earth systems models provide new opportunities to use limited field observations to infer trends…
Using Convolutional Neural Networks to Emulate Seasonal Tropical Cyclone Activity
It has been widely recognized that tropical cyclone (TC) genesis requires favorable large-scale environmental conditions. Based on these linkages, numerous efforts have been made …
Assessing the Atmospheric Response to Subgrid Surface Heterogeneity in CESM2
Land-atmosphere interactions are central to the evolution of the atmospheric boundary layer and the subsequent formation of clouds and precipitation. Existing global climate model…
Deep long-period earthquakes at Akutan Volcano are more directly related to magmatic processes than volcano-tectonic ea…
Both volcano-tectonic (VTs) and deep long-period earthquakes (DLPs) have been documented at Akutan Volcano, Alaska and may reflect different active processes. In this study, we pe…
Spatiotemporal variations in summertime Arctic aerosol optical depth caused by synoptic-scale atmospheric circulation i…
Atmospheric aerosols influence the radiation budget, cloud amount, cloud properties, and surface albedos of sea ice and snow over the Arctic. In spite of their climatic importance…
On the remote impacts of mid-Holocene Saharan vegetation on South American hydroclimate: a modelling intercomparison
Proxy reconstructions from the mid-Holocene (MH: 6,000 years ago) indicate an intensification of the West African Monsoon and a weakening of the South American Monsoon, primarily …
In-situ estimation of erosion model parameters using an advection-diffusion model and Bayesian inversion
We describe a framework for the simultaneous estimation of model parameters in a partial differential equation using sparse observations. Monte Carlo Markov Chain (MCMC) sampling …
Simulating global dynamic surface reflectances for imaging spectroscopy spaceborne missions - LPJ-PROSAIL
Imaging spectroscopy is a remote-sensing technique that retrieves reflectances across visible to shortwave infrared wavelengths at high spectral resolution (<10 nm). Spectroscopic…
Vertical shears of horizontal winds in the lower thermosphere observed by ICON
Vertical shears of horizontal winds play an important role in the dynamics of the middle and upper atmosphere. Prior observations have indicated that these shears predominantly oc…
The role of turbulence in fueling the subsurface chlorophyll maximum in tidally dominated shelf seas
Glider observations show a subsurface chlorophyll maximum (SCM) at the base of the seasonal pycnocline (PCB) in the central North Sea during stable summer conditions. A co-located…
Do Nudging Tendencies Depend on the Nudging Timescale Chosen in Atmospheric Models?
Nudging is a ubiquitous capability of numerical weather and climate models that is widely used in a variety of applications (e.g. crude data assimilation, “intelligent’ interpolat…
Updated assessment of climate tipping elements suggests >1.5oC global warming could trigger multiple tipping points
Over the past 15 years climate tipping points (CTPs) – which are reached when change in a climate subsystem (the ‘tipping element’) becomes self-perpetuating independent of the or…
The relationship between the global mean deep-sea and surface temperature during the Early Eocene
Our current understanding of global mean near-surface (land and sea) air temperature (GMSAT) during the Cenozoic era relies on paleo-proxy estimates of deep-sea temperature combin…
Impacts of COVID-19 restrictions on regional and local air quality across selected West African cities
The emergence of COVID-19 brought panic and a sense of urgency causing governments to impose strict restrictions on human and vehicular movement. With anthropogenic emissions, esp…
Significant Northward Jump of the Western Pacific Subtropical High: the Interannual Variability and Mechanisms
The intensity and position of the western Pacific subtropical high (WPSH) have crucial effects on climate and disaster events in East Asia during summer. The WPSH significant nort…
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