Results 181 to 190 of about 9,965 (268)

A Weyl Matrix Perspective on Unbounded Non-Self-Adjoint Jacobi Matrices. [PDF]

open access: yesComplex Anal Oper Theory
Eichinger B, Lukić M, Young G.
europepmc   +1 more source

Air Quality Forecasts With Observation‐Based Scaling of Anthropogenic Emissions for Urban Agglomerations

open access: yesEarth's Future, Volume 14, Issue 8, August 2026.
Abstract Air quality forecasts are essential to support decision‐making in urban agglomerations, where millions of people are exposed to high levels of pollution. However, these forecasts are often limited by uncertainties in anthropogenic emissions, especially in large urban agglomerations where no dedicated operational system exists.
Adrien Deroubaix   +12 more
wiley   +1 more source

Temporal Changes in the Earth's Outer Core From Nuclear‐Test PKP Waves

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 8, August 2026.
Abstract We investigate temporal changes in P‐wave velocity in the outer core using short‐period PKP waves generated by underground nuclear tests conducted in French Polynesia and recorded at seismic station BRVK in Kazakhstan. The observed first arriving PKP phase cannot be explained by ray theory.
Ying Zhou
wiley   +1 more source

Adjoint analysis of PM<sub>2.5</sub> and O<sub>3</sub> episodes in priority control zones in China. [PDF]

open access: yesEnviron Sci Ecotechnol
Zhang R   +12 more
europepmc   +1 more source

Vertical Momentum Flux at 0°N, 140°W: Unresolved Internal Waves and Implications for Cold Tongue SST

open access: yesJournal of Geophysical Research: Oceans, Volume 131, Issue 8, August 2026.
Abstract The Equatorial Pacific Cold Tongue is critical to the Bjerknes feedback driving the El Niño‐Southern Oscillation (ENSO), yet simulating Cold Tongue sea surface temperature (SST) remains difficult. Historical turbulence observations reveal a vertical momentum flux deficit in the zonal momentum budget at 0°N, 140°W.
E. H. Davenport   +6 more
wiley   +1 more source

A Hybrid ML‐PDE Framework for Predicting Breaking Ocean Waves

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract Wave breaking plays a central role in ocean dynamics, dissipating wave energy and shaping the evolution of the sea surface. Yet, breaking remains difficult to model: envelope‐based models efficiently capture nonlinear wave evolution and are interpretable but exclude breaking, while high‐fidelity direct numerical simulations resolve breaking ...
Y. Liu   +3 more
wiley   +1 more source

Physics‐Informed Machine Learning Framework to Retroactively Estimate Mantle Thermal Convection From Partial Geophysical Observations

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 4, August 2026.
Abstract Mantle convection drives the solid Earth, powering plate motions, volcanism, and earthquakes while regulating planetary heat loss. Reconstructing its history is hampered by sparse, noisy observations concentrated near the surface and the present day. Here I develop an inverse physics‐informed neural network framework to estimate mantle thermal
Atsushi Nakao
wiley   +1 more source

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