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Showing 12301 to 12350 of 22070 works
A Regional Operational and Storm Surge Model for the Galway Bay :Model Configuration and Validation
The authors implemented the Regional Ocean Modelling System (ROMS) to coastal waters on the west coast of Ireland. The Connemara model has c.200 m horizontal resolution and has 20…
New high-resolution Southwest North Atlantic Regional Climatology
Ocean processes in the Southwest North Atlantic (SWNA) play an important role in long-term earth and ocean climate change. This region is also a resource-rich coastal zone with ab…
Back to Einstein: burial-induced three range diffusion in fluvial sediment transport
Individual grains move through gravel bed rivers in cycles of motion and rest with variable characteristics, so tracer grains spread apart as they transport downstream in a type o…
Oceanic oxygen ‘gO 2 ing’; but where? - ‘Henry’s Law’: is oceanic oxygen buffering atmospheric oxygen loss? - An extinc…
Greater public, and research, focus on oceanic and atmospheric oxygen budgets is needed. Oceans are “losing their breath”; there has been a 1-2% loss, 77-154 gigatons (GT) of tota…
Comparing observations and parameterizations of ice-ocean drag through an annual cycle across the Beaufort Sea
Understanding and predicting sea ice dynamics and ice-ocean feedback processes requires accurate descriptions of momentum fluxes across the ice-ocean interface. In this study, we …
Erythemal Radiation, Column Ozone, and the North American Monsoon
Recently, Anderson et al. (2012, https://doi.org/10.1126/science.1222978, 2017, https://doi. org/10.1073/pnas.1619318114) and Anderson and Clapp (2018, https://doi.org/10.1039/C7C…
Managing financial risk tradeoffs for hydropower generation using snowpack-based index contracts
Hydrologic variability poses an important source of financial risk for hydropower-reliant electric utilities, particularly in snow-dominated regions. Drought-related reductions in…
What controls the isotopic composition of tropical tropospheric water vapor? Results from general circulation models an…
The isotopic composition of water vapor (e.g. its Deuterium content) evolves along the water cycle as phase changes are associated with isotopic fractionation. In the tropics, it …
Making a Case for Hands-Off, Student-Lead Research in Alternative Settings
This summer, The GLOBE Program brought 56 students from 13 different countries to Howell Nature Center near Detroit, Michigan for a camp-like experience. The majority of the stude…
Dynamical lifetime of the Oort Cloud new comets under planetary perturbation
We describe the result of our numerical simulations that trace the dynamical evolution of the Oort Cloud new comets that fall down to the planetary region. These comets approach t…
Forecasting the Next Eruption at Axial Seamount Based on an Inflation-Predictable Pattern of Deformation
Axial Seamount is the most active submarine volcano in the NE Pacific Ocean, and is monitored by instruments connected to a cabled observatory (the US Ocean Observatories Initiati…
Volcanic disturbance during the recovery of biota in the aftermath of Permian-Triassic boundary mass extinction
Evaporites and carbonates intercalated with volcanic beds are distributed in the Jialingjiang and Leikoupo Formations straddling the boundary of the Lower and Middle Triassic in t…
Comparison of GOLD nighttime measurements of OI 135.6 nm radiance with the total electron content map: preliminary resu…
The unambiguous 2-dimensional (2D) maps of OI 135.6 nm radiance retrieved from the Global Observation of Limb and Disk (GOLD) after sunset are compared with the total electron con…
Method to Transfer Flood Risk and its Application to Hurricane Harvey
The magnitude of Hurricane Harvey significantly altered flood frequency statistics in the region that it hit, but hurricane path projections indicate that it could have made landf…
Late Quaternary aggradation and incision in the headwaters of the Yangtze River, eastern Tibet Plateau, China
River aggradation or incision at different spatial-temporal scales are governed by tectonics, climate change and surface processes which all adjust the ratio of sediment load to t…
Imaging the Solar Wind From Space: Where do we stand?
Next year marks the 50th anniversary of the detection of Coronal Mass Ejections from space. The discovery and subsequent observations of thousands of events from a stream of coron…
Application of geoacoustic inference to assess the diurnal effects of photosynthetic activity in a seagrass meadow
Seagrasses provide a multitude of ecosystem services: they alter water flow, cycle nutrients, stabilize sediments, support the food web structure, and provide a critical habitat f…
On the form drag coefficient under ridged ice: Laboratory experiments and numerical simulations from ideal scaling to r…
The bottom topography of ridged sea ice differs largely from that of other sea ice types. The form drag on ridge keels plays an important role affecting sea ice drift and deformat…
Earthquake Monitoring in Artificial Intelligence Era
Diverse algorithms have been developed for efficient earthquake signal processing and characterization. These algorithms are becoming increasingly important as seismologists striv…
Opposite symmetry in the lithospheric structure of the Alboran and Algerian basins and their margins(Western Mediterran…
The geodynamic evolution of the Western Mediterranean for the past 35My is a matter of debate. Present-day structure and composition of the lithosphere and sublithospheric mantle …
Modeling of the Influence of Sea Ice Cycle and Langmuir Circulation on the Upper Ocean Mixed Layer Depth and Freshwater…
The Southern Ocean is chronically under-sampled due to its remoteness, harsh environment and sea-ice cover. Ocean circulation models yield significant insight into key processes a…
Direction-Based P wave Traveltime Residual Estimation for some Stations Around Southern Thailand, Peninsular Malaysia, …
Path dependent corrections relative to traveltimes have been demonstrated to improve event locations. Using available global velocity models, direction-based station corrections c…
Predicting the Time-of-Arrival of Coronal Mass Ejections at Earth Solely From Heliospheric Imaging Observations
The Time-of-Arrival (ToA) of coronal mass ejections (CME) at Earth is a key parameter due to the space weather phenomena associated with the CME arrival, such as intense geomagnet…
Development and operation of ICT seafloor cable seismic and tsunami observation system in the source region of the Toho…
A seafloor-cable seismic and tsunami observation system is ideal for marine geophysical observation because the data can be obtained in real-time. We have developed a new compact …
Thermal Infrared Spectroscopy (7-14 micron) of Silicates under Simulated Mercury Daytime Surface Conditions and their D…
To support the data analysis for the MErcury Radiometer and Thermal Infrared Imaging Spectrometer (MERTIS) instrument on the ESA-JAXA BepiColombo mission, we have measured the the…
The Influence of Meltwater on Phytoplankton Blooms Near the Sea-Ice Edge
Phytoplankton blooms occur annually at the sea-ice edge throughout the Arctic during the spring melt period. Our study considers how these spring blooms may depend on sea-ice melt…
A fireside chat: large wildfires are a looming threat to US lakes
Wildfires are becoming larger and more frequent across much of the US due to a combination of climate change and land use activities. Increasing wildfires have begun to raise conc…
A Lagrangian perspective on tropical anvil cloud lifecycle in present and future climate
The evolution of tropical anvil clouds from their origin in deep convective cores to their slow decay determines the climatic effects of clouds in tropical convective regions. Des…
On the Interplanetary Parameter Schemes which Drive the Variability of the Source/Seed Electron Population at GEO
Electron variability at geosynchronous orbit plays a key role in satellite operations especially concerning the low energies which can lead to surface charging effects on spacecra…
Supraglacial river forcing of subglacial water storage and diurnal ice sheet motion
Surface melting can alter ice sheet sliding by supplying water to the bed, but subglacial processes driving ice accelerations are complex. We examine linkages between surface runo…
Evaluation of 12-year Chinese Regional Reanalysis (1998-2009): Comparison of dynamical downscaling methods with/without…
High-resolution regional reanalysis is one of the most powerful tool to study local and regional high-impact weather events, climate extremes and climate change impact. In this st…
A sampling-based path planning algorithm for improving observations in tropical cyclones
Lack of high-resolution observations at the inner-core region of tropical cyclones introduces uncertainty into the structure’s true initial state. More accurate measurements at th…
Warm and cool nearshore plumes connecting the surf zone to the inner shelf
Cross-shore transport of larvae, pollutants, and sediment between the surf zone and the inner shelf is important for coastal water quality and ecosystems. Rip currents are known t…
Scaling of shear-generated turbulence: the equatorial thermocline, a case study
We formulate an expression for the turbulent kinetic energy dissipation rate, $\epsilon$, associated with shear–generated turbulence in terms of readily measured properties of the…
Climate as a Risk Factor for Armed Conflict: State of Knowledge and Directions for Research
In this presentation, we report on a comprehensive and balanced assessment of the relationship between climate and conflict risks and its implications for future directions of res…
Evaluation of a Coupled Modeling Approach for the Investigation of the Effects of SST Mesoscale Variability on the Atmo…
This study further evaluates the modeling approach of Jia et al. (2019) to investigate the potential effects of SST mesoscale variability on the atmospheric dynamics. The approach…
The formation of hot thermal anomalies in cold regions of Earth's lowermost mantle
The seismic structure of the Earth’s lowermost mantle is characterized by two large low shear provinces (LLSVPs) beneath the Pacific and Africa. Surrounding the LLSVPs are regions…
Climatological Seasonal Cycle of Global Ocean Oxygen, Heat and Apparent Oxygen Utilization Content Anomalies in the Sur…
Mean monthly climatological mixed layer depth (MLD) combined with temperature, dissolved oxygen, and apparent oxygen utilization (AOU) are used to produce global estimates of the …
A new morphodynamic instability associated to the cross-shore transport in the nearshore
The existing theory for alongshore rhythmic bars relies on morphodynamic instabilities involving the wave-driven longshore current and rip currents. Transverse finger bars are com…
Disproportionate Impacts of Oil and Gas Extraction on Already “Disadvantaged” California Communities: How State Data Re…
The consensus is that global warming must be limited to 1.5°C to prevent profound environmental harms, and to do so will require reaching net zero CO2 emissions globally by 2050. …
Forest Management Impacts on Tree Species Diversity: Effectiveness and Costs in Light of a Beetle Epidemic
In western North America, a recent epidemic of mountain pine beetle (Dendroctonus ponderosae) caused widespread forest mortality. This outbreak was in part due to the changing cli…
Recent unprecedented change of Pacific decadal variability shows a fingerprint of anthropogenic forcing
How the Pacific Decadal Variability (PDV) would change under a warming world remains an issue of scientific debate and societal concern. Here we show that the PDV has been experie…
The Joint ESA-NASA Multi-Mission Algorithm and Analysis Platform: Next-Generation Collaboration Tool for Scientific Alg…
The ESA-NASA Multi-mission Algorithm and Analysis Platform (MAAP) is a platform designed to meet the need of the international scientific community to collaborate on the generatio…
Quantifying the Effect of Aquatic Vegetation on Interfacial Gas Transfer in Streams
Turbulence generated by aquatic vegetation in rivers, lakes, and estuaries, can significantly alter the flow structure throughout the whole water column, affecting gas transfer me…
Wetting-phase relative permeability in multi-scale porous media
Modeling relative permeability in multi-scale rocks and fractured networks has broad applications to understanding oil production and recovery in reservoir formations. Natural por…
Modeling of the Photoelectron Space-Energy Distribution Based on a Contemporary Coupled Photon-Electron Transport Appro…
Photoelectrons produced by solar EUV uxes are a major contributor to ionospheric heating at high altitudes. Modeling of photoelectron heating relies strongly on their space-energ…
Effects of Land-Use Change (1938–2018) on Surface Runoff and Flooding in the Amite River Basin, Louisiana, USA Using Co…
Formed by Mississippi River sediments, south Louisiana is a flat, low-lying coastal region with high-clay content soils and heavy annual precipitation that is particularly suscept…
Sharp Turn Ahead: Modeling the Risk of Sudden Forest Change in the Western Conterminous United States
Anthropogenic climate change is driving shifts in vegetation communities. These shifts are projected to increase in frequency and extent as climate change intensifies into the fut…
Water-saturated solidus and second critical endpoint of peridotite determined from liquid texture and chemistry
The melting of peridotite plays a key role in the chemical differentiation of planetary bodies. Water-saturated (‘wet’) solidus of mantle peridotite defines initial melting temper…
Towards an understanding of magnetic mineralogy in speleothems from South America
Paleoclimate studies on speleothems commonly use oxygen isotopes as a record of precipitation variability and carbon isotopes to document soil, vegetation, and atmospheric process…
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