Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Miloshevich, George"'
Extreme heatwave sampling and prediction with analog Markov chain and comparisons with deep learning
We present a data-driven emulator, stochastic weather generator (SWG), suitable for estimating probabilities of prolonged heatwaves in France and Scandinavia. This emulator is based on the method of analogs of circulation to which we add temperature
Externí odkaz:
http://arxiv.org/abs/2307.09060
Publikováno v:
Front. Earth Sci., Sec. Atmospheric Science Volume 11 - 2023 | 28 August 2023
We investigate the statistics and dynamics of extreme heat waves over different areas of Europe. We find heatwaves over France and Scandinavia to be associated with recurrent wavenumber three teleconnection patterns in surface temperature and mid-tro
Externí odkaz:
http://arxiv.org/abs/2306.11769
Understanding extreme events and their probability is key for the study of climate change impacts, risk assessment, adaptation, and the protection of living beings. Forecasting the occurrence probability of extreme heatwaves is a primary challenge fo
Externí odkaz:
http://arxiv.org/abs/2208.00971
Autor:
Miloshevich, George, Burby, Joshua W.
Publikováno v:
Journal of Plasma Physics, 87(3), 835870301, 2021
We show that nonrelativsitic scaling of the collisionless Vlasov-Maxwell system implies the existence of a formal invariant slow manifold in the infinite-dimensional Vlasov-Maxwell phase space. Vlasov-Maxwell dynamics restricted to the slow manifold
Externí odkaz:
http://arxiv.org/abs/2104.03092
Publikováno v:
Journal of Plasma Physics, 87(2), 905870201, 2021
A Hamiltonian two-field gyrofluid model for kinetic Alfv\'en waves (KAWs) in a magnetized electron-proton plasma, retaining ion finite-Larmor-radius corrections and parallel magnetic field fluctuations, is used to study the inverse cascades that deve
Externí odkaz:
http://arxiv.org/abs/2007.06976
A pair of nonlinear diffusion equations in Fourier space} is used to study the dynamics of strong Alfv\'en-wave turbulence, from MHD to electron scales. Special attention is paid to the regime of imbalance between the energies of counter-propagating
Externí odkaz:
http://arxiv.org/abs/1912.05215
Publikováno v:
Physics of Plasmas 25, 072303 (2018)
The direction of cascades in a two-dimensional model that takes electron inertia and ion sound Larmor radius into account is studied, resulting in analytical expressions for the absolute equilibrium states of the energy and helicities. It is found th
Externí odkaz:
http://arxiv.org/abs/1801.06826
Publikováno v:
Physics of Plasmas, 24, 022103 (10pp) (2017)
Two types of Eulerian action principles for relativistic extended magnetohydrodynamics (MHD) are formulated. With the first, the action is extremized under the constraints of density, entropy, and Lagrangian label conservation, which leads to a Clebs
Externí odkaz:
http://arxiv.org/abs/1611.06036
Autor:
Miloshevich, George, Nguenang, Jean Pierre, Dauxois, Thierry, Khomeriki, Ramaz, Ruffo, Stefano
Publikováno v:
Journal of Physics A: Mathematical and Theoretical 50.12 (2017)
We investigate the existence and propagation of solitons in a long-range extension of the quartic Fermi-Pasta-Ulam (FPU) chain of anharmonic oscillators. The coupling in the linear term decays as a power-law with an exponent greater than 1 and less t
Externí odkaz:
http://arxiv.org/abs/1611.05350
Recent progress regarding the noncanonical Hamiltonian formulation of extended magnetohydrodynamics (XMHD), a model with Hall drift and electron inertia, is summarized. The advantages of the Hamiltonian approach are invoked to study some general prop
Externí odkaz:
http://arxiv.org/abs/1610.04952