An Analysis of the Spectral Energetics for a Planet Experiencing Rapid Greenhouse Gas Emissions

Aranha, André Ferreira; Veiga, José Augusto Paixão

doi:10.4236/acs.2017.71009

Cited by 2 publications

(2 citation statements)

References 16 publications

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“…Although the original concept was formulated almost 120 years ago, it has undergone a number of further refinements and reformulations (e.g., [6,7]). The concept is still under examination from different perspectives (e.g., [8,9]).…”

Section: Introductionmentioning

confidence: 99%

Lorenz Atmospheric Energy Cycle in Climatic Projections

Michaelides

2021

Climate

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The aim of this study is to investigate whether different Representative Concentration Pathways (RCPs), as they are determined in the Fifth Assessment Report (AR5) of the Intergovernmental Panel on Climate Change (IPCC), lead to different regimes in the energetics components of the Lorenz energy cycle. The four energy forms on which this investigation is based are the zonal and eddy components of the available potential and kinetic energies. The corresponding transformations between these forms of energy are also studied. RCPs are time-dependent, consistent scenarios of concentrations of radiatively active gases and particles. In the present study, four RCPs are explored, namely, rcp26, rcp45, rcp60, rcp85; these represent projections (for the future period 2006–2100) that result in radiative forcing of approximately 2.6, 4.5, 6.0 and 8.5 Wm−2 at year 2100, respectively, relative to pre-industrial conditions. The results are presented in terms of time projections of the energetics components from 2020 to 2100 and show that the different RCPs yield diverse energetics regimes, consequently impacting the Lorenz energy cycle. In this respect, projections under different RCPs of the Lorenz energy cycle are presented.

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Section: Introductionmentioning

confidence: 99%

Lorenz Atmospheric Energy Cycle in Climatic Projections

Michaelides

2021

Climate

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“…Following its original introduction by Lorenz, alternative propositions and reformulations have been proposed, employing further refnements (e.g., [22,25,27]). Te concept available potential energy is still under scrutiny from diferent viewpoints (e.g., [28,29]).…”

Section: Introductionmentioning

confidence: 99%

Modes of Atmospheric Energetics Based on HadGEM3-GC3.1-LL Simulations in the Framework of CMIP6

Michaelides

2023

Advances in Meteorology

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In this study, the focus is on investigating how different climate scenarios, as they have been adopted in Phase 6 of the Coupled Model Intercomparison Project (CMIP6), can lead to different regimes in the energetics components in Lorenz’s energy cycle, hence impacting the “working rate” of the climate system, which is considered as a “heat engine.” The four energy forms on which this investigation is based on are the zonal and eddy components of the available potential and kinetic energies. The permissible correspondingly considered transformations between these forms of energy are also studied. Generation of available potential energy and dissipation of kinetic energy complete the Lorenz energy cycle that is adopted here. In the CMIP6 approach, the results of different climate change analyses were collected in a matrix defined by two dimensions: climate exposure as characterized by a radiative forcing or temperature level and socioeconomic development as classified by the pathways, known as Shared Socioeconomic Pathways (SSPs). The basis of the calculations in this study is the climatic projection produced by the HadGEM3-GC3.1-LL climatic model in the period from 2015 to 2100. In this respect, the results are presented in terms of time projections of the energetics components under different SSPs. The results have shown that the different SSPs yield diverse energetics regimes, consequently impacting on Lorenz energy cycle and, hence, a “working rate” of the climate system based on the components of this cycle. In this respect, Lorenz energy cycle projections are presented, under different SSPs. The results are also contrasted to the calculations for the historical period 1929 to 2014 as this is simulated by the same climatic model.

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An Analysis of the Spectral Energetics for a Planet Experiencing Rapid Greenhouse Gas Emissions

Cited by 2 publications

References 16 publications

Lorenz Atmospheric Energy Cycle in Climatic Projections

Lorenz Atmospheric Energy Cycle in Climatic Projections

Modes of Atmospheric Energetics Based on HadGEM3-GC3.1-LL Simulations in the Framework of CMIP6

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