Výsledky vyhledávání - "Nadiga, B. T."

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Stochastic Parameterization of Column Physics using Generative Adversarial Networks

Publikováno v: Environmental Data Science, Dec. 2022

We demonstrate the use of a probabilistic machine learning technique to develop stochastic parameterizations of atmospheric column-physics. After suitable preprocessing of NASA's Modern-Era Retrospective analysis for Research and Applications, versio

Externí odkaz: http://arxiv.org/abs/2211.16654

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Meridional Propagation of Zonal Jets in Ocean Gyres

Autor: Nadiga, B. T., Straub, D. N.

Analyses of both altimetric data and in-situ measurements reveal patterns of meridionally-alternating, nearly zonal, coherent jet-like structures in many of the world ocean basins. In this context, recent Ocean General Circulation Model (OGCM) simula

Externí odkaz: http://arxiv.org/abs/2211.16511

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Reservoir Computing as a Tool for Climate Predictability Studies

Autor: Nadiga, B. T.

Reduced-order dynamical models play a central role in developing our understanding of predictability of climate irrespective of whether we are dealing with the actual climate system or surrogate climate-models. In this context, the Linear-Inverse-Mod

Externí odkaz: http://arxiv.org/abs/2103.06206

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Dependence of Inferred Climate Sensitivity on the Discrepancy Model

Autor: Nadiga, B. T., Urban, N. M.

Publikováno v: NCAR Technical Notes NCAR/TN-529+PROC, 2016

We consider the effect of different temporal error structures on the inference of equilibrium climate sensitivity\footnote{ECS is defined as the realized equilibrium surface warming---globally-averaged surface air temperature---for a doubling of CO$_

Externí odkaz: http://arxiv.org/abs/1809.04068

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Low-frequency regime transitions and predictability of regimes in a barotropic model

Autor: Nadiga, B. T., O'Kane, T. J.

Predictability of flow is examined in a barotropic vorticity model that admits low frequency regime transitions between zonal and dipolar states. Such transitions in the model were first studied by Bouchet and Simonnet (2009) and are reminiscent of r

Externí odkaz: http://arxiv.org/abs/1605.06068

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Investigations of a Two-Phase Fluid Model

Autor: Nadiga, B. T., Zaleski, S.

We study an interface-capturing two-phase fluid model in which the interfacial tension is modelled as a volumetric stress. Since these stresses are obtainable from a Van der Waals-Cahn-Hilliard free energy, the model is, to a certain degree, thermody

Externí odkaz: http://arxiv.org/abs/comp-gas/9511003

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