Zobrazeno 1 - 10
of 7 565
pro vyhledávání: '"Jones, Chris A."'
We study local magnetohydrodynamical (MHD) instabilities of differential rotation in magnetised, stably-stratified regions of stars and planets using a Cartesian Boussinesq model. We consider arbitrary latitudes and general shears (with gravity direc
Externí odkaz:
http://arxiv.org/abs/2410.06989
The planted random subgraph detection conjecture of Abram et al. (TCC 2023) asserts the pseudorandomness of a pair of graphs $(H, G)$, where $G$ is an Erdos-Renyi random graph on $n$ vertices, and $H$ is a random induced subgraph of $G$ on $k$ vertic
Externí odkaz:
http://arxiv.org/abs/2409.16227
Autor:
Jones, Chris, Tsang, Yue-Kin
Convection driven geodynamo models in rotating spherical geometry have regimes in which reversals occur. However, reversing dynamo models are usually found in regimes where the kinetic and magnetic energy is comparable, so that inertia is playing a s
Externí odkaz:
http://arxiv.org/abs/2408.07420
Autor:
Swaminathan, Ranjini, Schewe, Jacob, Walton, Jeremy, Zimmermann, Klaus, Jones, Colin, Betts, Richard A., Burton, Chantelle, Jones, Chris D., Mengel, Matthias, Reyer, Christopher P. O., Turner, Andrew G., Weigel, Katja
Climate risk assessments must account for a wide range of possible futures, so scientists often use simulations made by numerous global climate models to explore potential changes in regional climates and their impacts. Some of the latest-generation
Externí odkaz:
http://arxiv.org/abs/2404.11939
Autor:
Jones, Chris, Pesenti, Lucas
We study a general class of first-order iterative algorithms which includes power iteration, belief propagation and Approximate Message Passing (AMP), and many forms of gradient descent. When the input is a random matrix with i.i.d. entries, we prese
Externí odkaz:
http://arxiv.org/abs/2404.07881
Autor:
Gier, Bettina K., Schlund, Manuel, Friedlingstein, Pierre, Jones, Chris D., Jones, Colin, Zaehle, Sönke, Eyring, Veronika
Improvements in the representation of the land carbon cycle in Earth system models participating in the Coupled Model Intercomparison Project Phase 6 (CMIP6) include interactive treatment of both the carbon and nitrogen cycles, improved photosynthesi
Externí odkaz:
http://arxiv.org/abs/2402.05671
Autor:
Tsang, Yue-Kin, Jones, Chris A.
Publikováno v:
Geophysical Journal International, Volume 239, Issue 1, October 2024, Pages 1-16
The ratio of the Lowes spectrum and the secular variation spectrum measured at the Earth's surface provides a time scale $\tau_{\rm sv}(l)$ as a function of spherical harmonic degree $l$. $\tau_{\rm sv}$ is often assumed to be representative of time
Externí odkaz:
http://arxiv.org/abs/2308.12375
We investigate the linear and nonlinear properties of the Goldreich-Schubert-Fricke (GSF) instability in stellar radiative zones with arbitrary local (radial and latitudinal) differential rotation. This instability may lead to turbulence that contrib
Externí odkaz:
http://arxiv.org/abs/2306.16161
Ecological networks describe the interactions between different species, informing us of how they rely on one another for food, pollination and survival. If a species in an ecosystem is under threat of extinction, it can affect other species in the s
Externí odkaz:
http://arxiv.org/abs/2306.15428
During the last few years discontinuous Galerkin (DG) methods have received increased interest from the geophysical community. In these methods the solution in each grid cell is approximated as a linear combination of basis functions. Ensemble data a
Externí odkaz:
http://arxiv.org/abs/2305.02950