Results 51 to 60 of about 9,075 (140)

On the impact of observation‐error correlations in data assimilation, with application to along‐track altimeter data

open access: yesQuarterly Journal of the Royal Meteorological Society, Volume 151, Issue 772, October 2025 Part A.
We study the impact of observation‐error correlations in data assimilation using both a simple idealised system and a more realistic configuration. A spectral analysis of data assimilation in the idealised system allows us to gain insights on the effect of observation‐error correlations, which are then validated using the realistic configuration.
Olivier Goux   +4 more
wiley   +1 more source

Large Eddy Simulation of Canonical Atmospheric Boundary Layer Flows With the Spectral Element Method in Nek5000

open access: yesJournal of Advances in Modeling Earth Systems, Volume 17, Issue 10, October 2025.
Abstract Simulation of turbulence in the atmospheric boundary layer (ABL) is challenging due to the wide range of turbulent scales in the flow. To leverage the currently available computational power for high‐resolution simulation of atmospheric turbulence, fluid solvers that scale well on large compute clusters are required.
L. Huusko   +5 more
wiley   +1 more source

Improved High Resolution Heat Exposure Assessment With Personal Weather Stations and Spatiotemporal Bayesian Models

open access: yesGeoHealth, Volume 9, Issue 9, September 2025.
Abstract Most of the United States (US) population resides in cities, where they are subjected to the urban heat island effect. In this study, we develop a method to estimate hourly air temperatures at 0.01°×0.01° $0.01{}^{\circ}\times 0.01{}^{\circ}$ resolution, improving exposure assessment of US population when compared to existing gridded products.
Eva Marquès, Kyle P. Messier
wiley   +1 more source

Monitoring Fracture Hydromechanical Evolution in the Lab and Field Using Unsupervised Metric Learning

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 3, September 2025.
Abstract Fractures evolve in time through thermal‐hydraulic‐mechanical‐chemical (THMC) processes that alter their long‐range hydraulic transport properties and modify subsurface behavior and activities. The location of subsurface fractures makes it necessary to use remote sensing techniques such as passive or active seismic monitoring for fracture ...
David D. Nolte   +2 more
wiley   +1 more source

Linear transformations that are tridiagonal with respect to both eigenbases of a Leonard pair

open access: yesLinear Algebra and its Applications, 2007
12 ...
Nomura, Kazumasa, Terwilliger, Paul
openaire   +2 more sources

Approximate Exponential Integrators for Time-Dependent Equation-of-Motion Coupled Cluster Theory. [PDF]

open access: yesJ Chem Theory Comput, 2023
Williams-Young DB   +3 more
europepmc   +1 more source

Tridiagonal pairs and the q-tetrahedron algebra

open access: yesLinear Algebra and its Applications, 2009
30 pages, bibliography added (references were missing in first version), published in Linear Algebra and its ...
openaire   +2 more sources

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