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Showing 2701 to 2750 of 8313 works

The present-day relation between observed bottom water oxygenation and marine oxygen proxies

This study investigates how the marine sediment proxies signal reflects dissolved oxygen levels in fjord basin water, to improve our understanding of the coastal marine deoxygenat…

Species-by-Species Pattern Analysis of Coastal Dune Vegetation

Vegetation is crucial for stabilizing and developing coastal dunes. Different plant species exhibit different spatial distributions which reflect their environmental role and adap…

Memory-based deep learning integrating multi-source satellite data leads to improved estimation of net ecosystem CO2 ex…

Accurate estimation of regional-scale terrestrial carbon budgets is of great importance but remains challenging. With particular advantages, the Long Short-Term Memory (LSTM) netw…

Unraveling the Mantle Dynamics in Central Asia with Full Waveform Inversion Tomography

We use the full waveform inversion method to study the crustal-mantle seismic structure beneath Central Asia. By combining earthquake waveforms and ambient noise cross-correlation…

Comparing Near-Simultaneous OCO-3 and EMIT Observations of CO2 Point Sources from the ISS

Carbon dioxide (CO2) emissions from combustion sources are uncertain in many places across the globe. Here, we estimate CO2 emission rates from a small number of collocated observ…

Intensifying Seasonality of the Global Water Cycle as Indicated by Sea Surface Salinity

Sea surface salinity (SSS), an essential climate variable that is sensitive to changes in the global water cycle, varies seasonally in many places due to annual variations in rain…

The Thermodynamics of the 2023 Gulf-of-Mexico Marine Heatwave

This study aims to understand the mechanisms of the activation and evolution of the marine heatwave (MHW) that occurred in the Gulf of Mexico (GOM) during summer 2023. We quantifi…

Examining Daily Temporal Characteristics of Oil and Gas Methane Emissions in the Delaware Basin Using Continuous Tower …

Top-down studies have found consistent underestimations in the United States Environmental Protection Agency (EPA) methane emissions inventory from the oil and gas (O&G) sector. M…

Interseismic coupling degree of Serre and Cittanova faults surface in Southern Calabria, (Italy): New constraints from …

Extensional faults in Southern Calabria (Italy) have been widely studied for their capability to generate high magnitude earthquakes (Mw 7-7.2). An example is the 1783 historical …

Clean Cooking Interventions to Mitigate Household Air Pollution: A Cost Benefit Analysis and Policy Assessment.

Household air pollution accounts for about 4 million premature deaths annually worldwide with Ghana recording about 8,800 deaths each year amidst the HAP-influenced diseases resul…

Lower-Hybrid Wave-Induced Plasma Mixing related to Kelvin-Helmholtz Vortices during Southward IMF

We examine characteristics of the boundaries of 11 Kelvin-Helmholtz vortex crossings observed by MMS on September 23, 2017 under southward IMF conditions. At both the leading and …

Synoptic drivers and moisture sources of snowfall in coastal Victoria Land, Antarctica

Snowfall is an important component of the mass balance of ice sheets and glaciers in Antarctica. In coastal Victoria Land (VL), changes to snowfall can impact ice masses, landscap…

Equation of State, Structure, and Transport Properties of Iron Hydride Melts at Planetary Interior Conditions

Iron hydrides are a potentially dominant component of the metallic cores of planets, primarily because of hydrogen’s ubiquity in the universe and affinity with iron. Using ab init…

Is Reservoir Storage Effectively Utilized in Southeast? A Regional Assessment to Reduce Drought Risk considering Potent…

Most of the world’s population faces freshwater scarcity threats, and reservoirs, built both for ensuring water supply during prolonged droughts and reducing downstream flood risk…

Impacts of Seastate-Dependent Sea Spray Heat Fluxes on Tropical Cyclone Structure and Intensity in Fully Coupled Atmosp…

Air-sea sensible and latent heat fluxes are fundamental to tropical cyclone (TC) energetics, but the impacts of seastate-dependent sea spray heat fluxes on TC structure and intens…

Revisiting Mesoscale Eddy Zonal Propagation: Addressing the Long-Wave Approximation Limitation for Improved Global Esti…

Mesoscale eddies play a crucial role in the transport and mixing processes of the global ocean. Their zonal propagation has routinely been predicted using the theoretical phase sp…

A Universal Framework to Describe Unimodal and Bimodal Soil Hydraulic Properties over Full Water Saturation Range

Soil hydraulic properties (SHPs) are impacted by various mechanisms such as soil structure, capillarity, and adsorption forces, often showing a bimodal shape. Developing soil hydr…

Parameterizing Snow Sublimation in Conditions of Drifting and Blowing Snow

Snow transport favors strong sublimation and may therefore have an important effect on the surface mass balance of polar and high-mountain regions. Recently, small-scale models su…

Improving Physics-informed, Differentiable Hydrologic Models for Capturing Unseen Extreme Events

• Differentiable models (DMs) better capture extreme events with magnitudes not included in the training data compared to LSTM. • DM optimized for better extreme predictions can s…

Limited effect of future land-use changes on human heat stress and labour capacity

To achieve the 1.5°C target of the Paris agreement, rapid, sustained, and deep emission reductions are required, which often includes negative emissions through land-based mitigat…

Semidiurnal inner shelf flow in the Southern California Bight

Semidiurnal variability of alongshore currents on the inner shelf of the Southern California Bight is investigated using a seven year velocity and pressure time series. Analysis r…

Optimising interannual sea ice thickness variability retrieved from CryoSat-2

Satellite radar altimeters like CryoSat-2 estimate sea ice thickness by measuring the return-time of transmitted radar pulses, reflected from the sea ice and ocean surface, to mea…

Flux Ropes Induced by O+ Outflow in the Near-Earth Magnetotail: Three-Dimensional Hybrid Simulations

Spacecrafts observe signatures of duskside magnetic reconnection in the Earth’s magnetotail associated with the presence of oxygen (O+) ions of ionospheric origin. The exact role …

Numerical Simulations of Satellite-Sensed Surface Maps in the Marginal Ice Zone

The heterogeneity of sea ice in the marginal ice zone (MIZ) causes multiscale secondary circulations that are challenging to model or observe. Their absent or inadequate represent…

Paleosol-based reconstruction indicates decoupling of mean annual precipitation and precipitation intensity during the …

The Earth is transitioning to a state unprecedented in human history. This transition poses a challenge for predicting the future, as climate models require testing and calibratio…

Internal Kelvin waves in a broad, mid-latitude fjord

Broad embayment, such as some Fjords, can host the generation and propagation of internal Kelvin waves should the ratio of their stratification level to shelf-slope width be impor…

Monthly crop water requirements of irrigated crops in the United States from 1981-2019

Irrigated agriculture depends on surface water and groundwater, but we do not have a clear picture of how much water is consumed from these sources by different crops across the U…

Insights on Tropical High-Cloud Radiative Effect from a New Conceptual Model

The new capabilities of global storm-resolving models to resolve individual clouds allow for a more physical perspective on the tropical high-cloud radiative effect and how it mig…

Particle production and transformation in the Eastern Tropical North Pacific Oxygen Deficient Zone: a δ15N-amino acids’…

The eastern tropical North Pacific oxygen deficient zone (ETNP-ODZ) exhibits a distinct physical and biological environment compared to other oxygenated water columns, leading to …

Influence of Anomalous Ocean Heat Transport on the Extratropical Atmospheric Circulation in a High-Resolution Slab-Ocea…

Key questions remain about the atmospheric response to variability in the oceanic western boundary currents (WBCs). Here we exploit a unique high-resolution slab-ocean coupled cli…

Hydrological vs. Mechanical Impacts of Soil Water Repellency on Erosion

Soil erosion is a major concern for both agricultural and natural resources. Soil water repellency (SWR) is known to hinder wetting of soils, decreasing infiltration of water and …

SEASONAL VARIATION IN NIGHTTIME NO RADIATIVE COOLING AS OBSERVED BY TIMED/SABER IN LOWER THERMOSPHERE DURING SOLAR MAXI…

Both composition and temperature play a crucial role in determining the NO radiative cooling in lower thermosphere as observed by TIMED/SABER. In this work, we present a detailed …

A Comparative Analysis of a Novel Custom Distance Metric Against Traditional Metrics in KNN Classification

This study tackles the limitations of traditional distance metrics in machine learning, particularly their inadequacy in managing missing data and varying feature importance. We i…

The Interconnected Relationship Between Hydrogen and Protons During Martian Proton Aurora Activity: A Combined MAVEN Re…

We compare observations of hydrogen (H) and protons associated with Martian proton aurora activity, co-evaluating remote sensing and in situ measurements during these events. Foll…

A NASA GISTEMPv4 Observational Uncertainty Ensemble

• A 200-member ensemble has been created to quantify uncertainty in the GISTEMP history of surface temperature anomalies. • This ensemble enables more accurate statistical analyse…

IMO2020 Regulations Accelerate Global Warming by up to 3 Years in UKESM1

• Recent regulations on the sulphur content of ship emissions has accelerated global warming by approximately 2-3 years. • Reduced ship emissions induce responses in cloud propert…

Anelastic Convective Entities. Part 1: Formulation and implication for nighttime convection

A formulation based on the anelastic approximation yields time-dependent simulations of convective updrafts, downdrafts and other aspects of convection, such as stratiform layers,…

AGU2022_A51K-09_poster

Production and use of halocarbons (halogenated hydrocarbons) saw explosive growth after the Second World War for use as refrigerants (including air conditioning and industrial ref…

Seismic Azimuthal Anisotropy Beneath the Alaska Subduction Zone

We estimate depth-dependent azimuthal anisotropy and shear wave velocity structure beneath the Alaska subduction zone by the inversion of a new Rayleigh wave dispersion dataset fr…

Assessment of Heavy Metals Agglutination to Suspended Particulate Matter on the surface and inside the leaves of select…

Urban environments are increasingly impacted by heavy metals pollution originating from traffic emissions, solid waste burning, and other anthropogenic sources (i.e., foundries,…

New estimates of stratospheric age of air from halocarbon measurements of air samples collected by a balloon-borne cryo…

The stratospheric circulation is considered to be strengthened in response to the increase of atmospheric greenhouse gases, but supporting observational evidence has not been prov…

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