Periodic Solutions in Low-Dimensional Climatic Models

Autor:	Toni Pujol, J.E. Llebot
Rok vydání:	1999
Předmět:	Physics Atmospheric Science Forcing (recursion theory) Climatology Heat transfer Periodic oscillations Energy balance Response time Thermodynamics Climate model Statistical physics Critical value Extended irreversible thermodynamics
Zdroj:	Journal of Climate. 12:325-333
ISSN:	1520-0442 0894-8755
DOI:	10.1175/1520-0442(1999)012<0325:psildc>2.0.co;2
Popis:	Classic climatic models use constitutive laws without any response time. A more realistic approach to the natural processes governing climate dynamics must introduce response time for heat and radiation fluxes. Extended irreversible thermodynamics (EIT) is a good thermodynamical framework for introducing nonclassical constitutive laws. In the present study EIT has been used to analyze a Budyko‐Sellers one-dimensional energybalance model developed by G. R. North. The results present self-sustained periodic oscillations when the response time is greater than a critical value. The high-frequency (few kiloyears) damped and nondamped oscillations obtained can be related to abrupt climatic changes without any variation in the external forcing of the system.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::6b29e5eb18978ed2dae12e404a9a6621 https://doi.org/10.1175/1520-0442(1999)012<0325:psildc>2.0.co Zobrazit plný text záznamu Plný text ve formátu PDF