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Showing 7851 to 7900 of 59105 works
Dependence of horizontal characteristic scale of chlorophyll a distribution on eddy activity at the mid-latitudes of gl…
Understanding of the spatial distribution of near-surface oceanic chlorophyll a (Chl-a) in relation to eddy activity is important because Chl-a is critical to biological productio…
Capitalizing on the Capabilities of the New Generation of Instruments for Real-time Quantification and Prediction of St…
Advancing the understanding of watershed dynamics and underpinning scientific studies on the changes in water cycles, ecological patterns, and climate trends often rely on streamf…
Quantifying the impact of the COVID-19 lockdown on air quality in downtown Toronto using open-path Fourier transform sp…
During the global COVID-19 pandemic, anthropogenic emissions of air pollutants and greenhouse gases, especially traffic emissions in urban areas, have declined significantly. Long…
Seasonal Effects of Experimental Warming on Soil Biogeochemistry and Plant Functional Diversity in Pacific Northwest Pr…
This project aims to quantify the resiliency of prairie ecosystems in the U.S. Pacific Northwest (PNW) to climate change. Prairies in this region sustain over one million beef cow…
On the reconstruction and sampling of random fields based on information from limited-size marginals
In an ideal application of sequential simulation, parameters are simulated one at a time conditioned to all previously simulated parameters. This requires that marginal distributi…
Optical Characterization Model of the DART Impact Ejecta Plume
The Double Asteroid Redirection Test (DART) mission is the world’s first planetary defense mission. Reaching the binary (65803) Didymos-Dimorphos asteroid system in late September…
Tropical Cirrus in Global Storm-Resolving Models. Part I: Role of Deep Convection
Pervasive cirrus clouds in the upper troposphere and tropical tropopause layer (TTL) influence the climate by altering the top-of-atmosphere radiation balance and stratospheric wa…
Photo-reactivity of surfactants in the sea-surface microlayer and subsurface water of
We report the first estimates of total surfactant photo-reactivity in the sea-surface microlayer (SML) and in subsurface water (SSW) (Tyne estuary, UK; salinity 0.3-32.0). In addi…
Characterizing the Carbon Fluxes of a Bottomland Hardwood Forest
Bottomland hardwood forests are a historically dominant ecosystem in the Southeastern United States, with 5.3 million-acres remaining in the Lower Mississippi Alluvial Valley. Des…
Non-reversible aging increases the solar absorptivity of African biomass burning plumes
Biomass-burning emissions impact almost all of the radiative forcing terms considered by the IPCC, yet little is known about smoke aerosol aging in nature beyond a few days. The m…
High-Tide Floods and Storm Surges During Atmospheric Rivers on the US West Coast
Atmospheric rivers (ARs) effect inland hydrological impacts related to extreme precipitation. However, little is known about the possible coastal hazards associated with these eve…
Insights Into Fire-based Soil Temperature and Moisture Changes From a Long-term Data Set in Alaska
Wildfires are one of the main sources of disturbance in boreal forests. Post-fire changes to soil temperature and moisture regimes can have wide-ranging impacts on boreal forests …
Convective cloud regimes from the classification of object-based CloudSat observations over Asian-Australian monsoon ar…
The present study objectively classify the convective cloud objects detected by the space-borne CloudSat radar over the Asian-Australian monsoon region using the hierarchical aggl…
Asynchronous strath terrace formation in a collisional mountain belt
Structural and lithological controls in mountain valleys have been shown to affect the erosional connectivity of hillslopes, tributaries and alluvial fans, as well as the formatio…
The north-south asymmetry of Martian ionosphere and thermosphere
Based on the data of Maven's NGISM neutral composition and Langmuir probe electron density and temperature, we statistically analyzed the climatic variations of the Martian thermo…
AI-Track-tive: open source software for automated recognition and counting of surface semi-tracks using computer vision…
Abstract A new method for automatic counting of etched fission tracks in minerals is developed and recently published in Geochronology (see Nachtergaele and De Grave, 2021). Artif…
Characterizing Convection Schemes Using Their Responses to Imposed Tendency Perturbations
Convection is usually parameterized in global climate models, and there are often large discrepancies between results obtained with different convection schemes. Conventional meth…
Convective cloud size distributions in idealized cloud resolving model simulations
It is now widely accepted that cumulus cloud size distributions follow power-laws, at least over part of the cloud size spectrum. Providing reliable fits to empirical size distrib…
First observation of off-season lee wave formation over the Arsia Mons in Mars
We report the first observation of the largest Martian lee wave and its atmospheric characteristics over Arsia Mons Elongated Cloud (AMEC). We analyze the wavelength, the cloud’s …
Quantifying the soil freezing characteristic: the dominant role of salt exclusion
The phenomenon of freezing point depression in frozen soils results in the co-existence of ice and liquid water in soil pores at temperatures below 273.15 K, and is thought to hav…
A +CG flash caused by a sequence of bidirectional leaders that served to form a ground-reaching branch of a pre-existin…
High‐speed video and electric field change data were used to analyze the initiation and propagation of four predominantly vertical bidirectional leaders making connection to a pre…
Geohydrologic Characterization of Southern Sonoma Valley to Support Water Management, Sonoma County, California
The U.S. Geological Survey and Sonoma County Water Agency (SCWA) are engaged in a cooperative project to characterize the hydrogeology of southern Sonoma Valley, a groundwater bas…
Study of Solar Wind and Interplanetary Magnetic Field Features Associated with Geomagnetic Storms: The Cross Wavelet Ap…
Researchers have studied the interplanetary magnetic field (IMF) and solar-wind (SW) parameters that influence the development of geomagnetic storms for more than a decade. This s…
High-resolution Climate Projections over Minnesota for the 21st Century
Minnesota is the U.S. state with the strongest winter warming in the contiguous United States. We performed regional climate projections at 10 km horizontal resolution using the W…
New data on the stick-slip mechanics of seismogenic faults from rotary shear experiments
Rotary shear (RS) experiments have been used to characterize the deformational behavior of materials and attempt to understand earthquakes. Typical RS experiments test materials u…
Physical interpretation of time-varying StorAge Selection functions in a model hillslope via geophysical imaging of age…
Understanding transit times (TT) and residence times (RT) distributions of water in catchments has recently received a great deal of attention in hydrologic research since it can …
Short-periodic VLF emissions observed simultaneously by Van Allen Probes and on the ground
We present simultaneous observations of VLF emissions with periodic (2 or 4 s) bursts by Van Allen Probe near geomagnetic equator and Kannuslehto and Lovozero ground-based sites. …
Rheological implications of post-seismic deformation following the 2019 Ridgecrest Earthquakes
Post-seismic deformation following large earthquakes offers insights into the rheology of the lithosphere and upper asthenosphere. The Mojave, in southern California, is one of th…
Interseismic Strain Accumulation near Lisbon (Portugal) from Space Geodesy
The Lisbon Metropolitan Area (LMA, Portugal) has been affected by several destructive earthquakes nucleating both along the offshore Africa-Eurasia plate boundary and on onshore i…
Drag-based CME modeling with heliospheric images incorporating frontal deformation: ELEvoHI 2.0
The evolution and propagation of coronal mass ejections (CMEs) in interplanetary space is still not well understood. As a consequence, accurate arrival time and arrival speed fore…
Gravity Wave Observations by the Mars Science Laboratory REMS Pressure Sensor and Comparison with Mesoscale Atmospheric…
Surface pressure measurements on Mars have revealed a wide variety of atmospheric phenomena. The Mars Science Laboratory Rover Environmental Monitoring Station pressure sensor dat…
Toward High-Resolution Soil Moisture Monitoring over India by Combining Remote Sensing Products with Land Surface Models
Soil moisture is a vital climatic variable driving environmental and biological processes. Large scale soil moisture can be estimated using Land Surface Models or observed using a…
Energetic Fe Ions In And Near The Magnetospheres Of Earth, Jupiter, And Saturn
We examine long-term energetic heavy ion measurements including three planets’ magnetospheres, focusing on Fe ions (specifically, but not exclusively, Fe+) in and near Earth’s mag…
Increasing contribution of evaporative demand to future intensified drought across global drylands
Drylands face more threat from droughts under global warming. It remains insufficient in quantifying the roles of potential evapotranpiration (PET) and precipitation (P) to drough…
CUSRA2021: A Radially Anisotropic Model of the Contiguous US and surrounding regions by full-waveform inversion
The lithospheric structure of the contiguous US and surrounding regions is significant in revealing the historical tectonic deformations and interactions between subducting slabs …
Ensemble Riemannian Data Assimilation for High-dimensional Nonlinear Dynamics
This paper presents the results of an ensemble data assimilation methodology over the Wasserstein space for high-dimensional nonlinear dynamical systems, focusing on the chaotic L…
Laboratory landquakes: Insights from experiments into the high-frequency seismic signal generated by geophysical granul…
Geophysical granular flows exert basal forces that generate seismic signals, which can be used to better monitor and model these severe natural hazards. A number of empirical rela…
Lightning Interferometric Processing and Uncertainty Analysis for General Noncoplanar Antenna Arrays
Broadband radio frequency interferometric technique is being rapidly advanced in recent years and is being increasingly widely used in the lightning community for detailed dischar…
Revealing the Southeast Greenland physical environment to enhance biological knowledge
Southeastern Greenland (SEG) provides a complex habitat area consisting of dozens of deep fjords that connect land-based ice with the open ocean. Within these fjords, glacial ice …
Subsurface Flow and Transport Through a Snowmelt-recharged Hillslope Constrained with Multiyear Water Balance
Quantifying flow and transport from hillslopes is vital for understanding surface water quality, but remains obscure because of limited subsurface measurements. A recent combinati…
Calcium carbonate dissolution triggered by high productivity during the last glacial-interglacial interval at the deep …
Studies reconstructing surface paleoproductivity and benthic conditions allow us to measure the effectiveness of the biological pump, an important mechanism in the global climate …
Observing System Simulation Experiments double scientific return of surface-atmosphere synthesis
The observing system design of multi-disciplinary field measurements involves a variety of considerations on logistics, safety, and science objectives. Typically, this is done bas…
Winter Dynamics in an Epishelf Lake: Quantitative Mixing Estimates and Ice Shelf Basal Channel Considerations
Milne Ice Shelf is located at the mouth of Milne Fiord (82.6$^\circ$N, 81.0$^\circ$W), on Ellesmere Island, Nunavut. This floating ice feature is attached to both sides of the fjo…
Elastic properties of the pyrite-type FeOOH-AlOOH system from first principles calculations
The stability, structure, and elastic properties of pyrite-type (FeS2 structured) FeO2H were determined using density functional theory-based computations with a self-consistent C…
A Global Set of Subduction Zone Earthquake Scenarios and Recurrence Intervals Inferred From Geodetically Constrained Bl…
The past 100 years have seen the occurrence of five Mw> 9 earthquakes and 94 Mw> 8 earthquakes. Here we assess the potential for future great earthquakes using inferences of inter…
Back-arc dynamics controlled by slab rollback and tearing: a reappraisal of seafloor spreading and kinematic evolution …
In spite of clear fan-shaped magnetic anomalies in the Eastern Algerian Basin (EAB), the way how and the time when seafloor spreading occurred are still debated. In this work, a n…
Fuzzy-Committees of Conceptual distributed Models
Conceptual hydrological models imply a simplification of the complexity of the hydrological system; however, it lacks the flexibility in reproducing a wide range of the catchment …
Combining magnetic and seismic reflection data for characterization of inner shelf sand nourishment areas
The CHIMERA project, contracted by the Portuguese Environment Agency (APA) and co-funded by the EuropeanUnion Cohesion Fund (Portugal 2020 | POSEUR) intended to characterize the s…
Crustal structure and intraplate seismicity in Nordland, Northern Norway: Insight from Seismic Tomography
The Nordland region, Northern Norway, situated in an intraplate continental setting, has the highest seismicity rate in mainland Norway. Better understanding of factors that influ…
MHD-test particles simulations of moderate CME and CIR-driven geomagnetic storms at solar minimum
As part of the Whole Heliosphere and Planetary Interactions (WHPI) initiative, contrasting drivers of radiation belt electron response at solar minimum have been investigated with…
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