Journal ArticleDOI
Fluctuation dissipation in a general circulation model
TLDR
In this article, the NCAR CCM0 model is applied to an all-land planet with no topography (Terra Blanda), and the decay of natural anomalies in the large-scale temperature field in each model is examined.Abstract:
This paper considers the climate response to step function changes in the solar constant in two versions of a general circulation model with simplified geography. The NCAR CCM0 model is applied to an all-land planet with no topography (Terra Blanda). In one version there is moisture in the air (as well as self-generated clouds) as evaporated from an ideal surface at a fixed 80% of saturation. In the other version there is no moisture in the atmosphere. We examine the decay of natural anomalies in the large-scale temperature field in each model and compare the time dependence of the ensemble average with the average temporal behavior of the response to step function changes in the solar constant. The fluctuation-dissipation theorem of statistical mechanics makes specific predictions about the relationship between the two curves. We conduct the experiments for both versions of the model since the sensitivity is quite different for each. The theorem is found to hold reasonably well in each case.read more
Citations
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Journal ArticleDOI
Fluctuation-dissipation: Response theory in statistical physics
TL;DR: In this paper, the relation between the relaxation of spontaneous fluctuations and the response to an external perturbation is discussed, and the connection of these works with large deviation theory is analyzed.
Journal ArticleDOI
Heat capacity, time constant, and sensitivity of Earth's climate system
TL;DR: The equilibrium sensitivity of Earth's climate is determined as the quotient of the relaxation time constant of the system and the pertinent global heat capacity as mentioned in this paper, which is derived from regression of ocean heat content vs. global mean surface temperature.
Journal ArticleDOI
Climate Response Using a Three-Dimensional Operator Based on the Fluctuation–Dissipation Theorem
Andrey Gritsun,Grant Branstator +1 more
TL;DR: The fluctuation-dissipation theorem (FDT) has been shown to hold for systems with properties very close to the properties of the earth's atmosphere as mentioned in this paper, and a three-dimensional operator for steady responses to external forcing is constructed for data from an atmospheric general circulation model (AGCM).
Journal ArticleDOI
The physics of climate variability and climate change
Michael Ghil,Valerio Lucarini +1 more
TL;DR: This paper reviewed the observational evidence on climate phenomena and the governing equations of planetary-scale flow, as well as presenting the key concept of a hierarchy of models as used in the climate sciences.
Journal ArticleDOI
The Response of a Simplified GCM to Axisymmetric Forcings: Applicability of the Fluctuation–Dissipation Theorem
Michael J. Ring,R. Alan Plumb +1 more
TL;DR: In this paper, the applicability of the fluctuation-dissipation theorem to the problem of thermal forcings is investigated, and the authors derive a theoretical relationship between forcing and response.
References
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Über die von der molekularkinetischen Theorie der Wärme geforderte Bewegung von in ruhenden Flüssigkeiten suspendierten Teilchen
TL;DR: In el marco del Proyecto subvencionado by the Fundación Antorchas (FAN) as discussed by the authors, el material was digitalizado, e.g., en la Biblioteca del Departamento de Fisica de la Facultad de Ciencias Exactas de la Universidad Nacional de La Plata.
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Thermal Agitation of Electric Charge in Conductors
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Energy Balance Climate Models
TL;DR: In this article, an introductory survey of the global energy balance climate models is presented with an emphasis on analytical results. But the model parameterizations are examined critically in light of many current uncertainties.
Journal ArticleDOI
On a Theorem of Irreversible Thermodynamics
TL;DR: In this paper, a relation between the parameter describing the irreversible response of a driven dissipative system and the spontaneous fluctuations of the thermodynamic extensive parameters of the system in equilibrium is obtained.
Journal ArticleDOI
Climate Response and Fluctuation Dissipation
TL;DR: For a system with two quadratic integrals of motion such as that of two-dimensional or geostrophic turbulence, the mean response to impulsive external forcing of a dynamical system to its natural unforced variability is investigated in this article.
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