A nonlinear parabolic problem on a Riemannian manifold without boundary arising in Climatology

JID Díaz, LT del Castillo - Collectanea Mathematica, 1999 - raco.cat
We present some results on the mathematical treatment of a global two-dimensional
diffusive climate model. The model is based on a long time averaged energy balance and …

[PDF][PDF] Stability results for discontinuous nonlinear elliptic and parabolic problems with a S-shaped bifurcation branch of stationary solutions

S Bensid, JI Díaz - Discrete Contin. Dyn. Syst. Ser. B, 2017 - academia.edu
We study stability of the nonnegative solutions of a discontinuous elliptic eigenvalue
problem relevant in several applications as for instance in climate modeling. After giving the …

On the mathematical treatment of energy balance climate models

JI Díaz - The mathematics of models for climatology and …, 1997 - Springer
Climate models have different characteristics than weather prediction models: the time scale
is completely different (centuries versus days or weaks) and their main goal is also …

[HTML][HTML] Mathematical and numerical analysis of a nonlinear diffusive climate energy balance model

R Bermejo, J Carpio, JI Diaz, L Tello - Mathematical and computer …, 2009 - Elsevier
The purpose of this paper is to carry out the mathematical and numerical analysis of a two-
dimensional nonlinear parabolic problem on a compact Riemannian manifold without …

On the exact number of monotone solutions of a simplifed Budyko climate model and their different stability

S Bensid, JI Díaz - arXiv preprint arXiv:1808.03979, 2018 - arxiv.org
We consider a simplified version of the Budyko diffusive energy balance climate model. We
obtain the exact number of monotone stationary solutions of the associated discontinuous …

Diffusive energy balance models in climatology

JI Diaz - Studies in Mathematics and its Applications, 2002 - Elsevier
This paper contains an expanded and updated version of my lecture at the Collège de
France, on May 1997, where I collected several results on a diffusive energy balance model …

[PDF][PDF] Controllability and obstruction for some non linear parabolic problems in Climatology

JI Díaz - Modelado de Sistemas en Oceanografía, Climatología …, 1994 - academia.edu
In 1955, John von Neumann wrote: Probably intervention in atmospheric and climate
matters will come in a Oew decades, and will unOold on a scale di" cult to imagine at …

Lagrangian approach to the study of level sets: application to a free boundary problem in climatology

JI DíAz, S Shmarev - Archive for rational mechanics and analysis, 2009 - Springer
We study the dynamics and regularity of level sets in solutions of the semilinear parabolic
equation u_ t-Δ\, u ∈ a\, H (u-μ)\rm in\quad Q=\it Ω * (0, T, where Ω ⊂ R^ n is a ring-shaped …

A finite volume scheme for simulating the coupling between deep ocean and an atmospheric energy balance model

A Hidalgo, L Tello - Modern Mathematical Tools and Techniques in …, 2011 - Springer
In this work we consider a model including the coupling surface/deep ocean first proposed
in [20]. It is a diagnostic model which can be used to understand the long-term climate …

A finite element algorithm of a nonlinear diffusive climate energy balance model

R Bermejo, J Carpio, JI Díaz… - Pure and Applied …, 2008 - Springer
We present a finite element algorithm of a climate diagnostic model that takes as a climate
indicator the atmospheric sea-level temperature. This model belongs to the category of …