Inverse Climate Modelling Study of the Planet Venus

Mulholland, Philip; Wilde, Stephen Paul Rathbone

doi:10.11648/j.ijaos.20200401.13

Cited by 6 publications

(12 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To address this climate model structural limitation a planetary climate model with universal applicability was designed based on the concept of a tidally locked world [4].…”

Section: Items Recorded In W/mentioning

confidence: 99%

The Application of the Dynamic Atmosphere Energy Transport Climate Model (DAET) to Earth's Semi-Opaque Troposphere

Mulholland¹,

Wilde²

2023

Preprint

View full text Add to dashboard Cite

The objective of this work is to apply the Dynamic-Atmosphere Energy Transport (DAET) climate model to a study of the Earth’s semi-opaque troposphere. In this analysis the concept of previous authors has been followed and the Earth’s climate is treated as a single integrated structured system of solar energy collection, thermal energy retention and energy distribution across the Earth’s surface. Unlike previous authors the hemispheric duality of the Earth’s surface is modelled with two separate energy environments of a day lit hemisphere of net energy collection and a dark night surface of net energy loss as fundamental to the design. Using worked examples, it is shown how the Greenhouse Effect results from the summation of two separate physical atmospheric processes, both of which are mathematically equivalent and which together create an energy reservoir within the Earth’s troposphere. These processes are the thermal radiant opacity blocking of radiative physics, and the process of adiabatic convection and conserved energy delivery to far distance of mass-motion physics. Both these processes involve the mathematical infinite summation of halves-of-halves of energy flux and are completely saturated at a surface atmospheric pressure of 1 Bar. It is concluded that the two fundamental controls on terrestrial planetary climate for a given solar system orbit are the downwelling high frequency energy reflection filter of planetary Bond Albedo, and the upwelling low frequency energy bypass to space filter of the Atmospheric Window.

show abstract

“…To address this climate model structural limitation a planetary climate model with universal applicability was designed based on the concept of a tidally locked world [4].…”

Section: Items Recorded In W/mentioning

confidence: 99%

The Application of the Dynamic Atmosphere Energy Transport Climate Model (DAET) to Earth's Semi-Opaque Troposphere

Mulholland¹,

Wilde²

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…We are attempting here to simultaneously analyse the energy flows for the Earth's three atmospheric circulation cells, using the adiabatic form of the Dynamic-Atmosphere Energy-Transport (DAET) model, previously used for the study of the climates of Venus and Titan [5,10]. The Earth is modelled as a spherical globe that cuts a circular silhouette, or disk shadow from the beam of the solar irradiance at the planet's average orbital distance from the Sun.…”

Section: Applying the Dynamic-atmosphere Energy-transport (Daet) Model To The Study Of Earth's Climatementioning

confidence: 99%

“…The Dynamic-Atmosphere Energy-Transport (DAET) climate model contains a mechanism for energy flux recycling using the meteorological process of atmospheric circulation. This model was used to demonstrate that convective atmospheric mass motion can be invoked to explain the planetary greenhouse effect for both Venus and also Titan, the tidally locked moon of Saturn [5,10]. Atmospheric data for these two bodies show that there is little or no thermal contrast between the lit daytime and the dark nighttime hemispheres on these slowly rotating worlds.…”

Section: Applying the Dynamic-atmosphere Energy-transport (Daet) Climate Model To The Earthmentioning

confidence: 99%

“…It is the Northern Hemisphere Ferrel cell that accounts for Aristotle's Temperate Zone, with its annual seasonal changes and varied weather patterns. In this paper we adopt the climate modelling techniques first applied to the planet Venus [5] where we developed an alternative climate model, using the process of atmospheric circulation on a hypothetical tidally locked planet. We use this model to demonstrate that convective atmospheric mass motion recycling can be invoked to explain the planetary greenhouse effect.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Return to Earth: A New Mathematical Model of the Earth’s Climate

Wilde¹,

Mulholland²

2020

IJAOS

Self Cite

View full text Add to dashboard Cite

In this paper we use the inverse modelling technique, first applied to the atmosphere of the planet Venus, to demonstrate that the process of convective atmospheric mass motion can be invoked to explain the greenhouse effect of the Earth's climate. We propose that the atmospheric cell is the fundamental element of climate, and have developed an alternative climate model based on this process of atmospheric circulation for a hypothetical tidally locked world. The concept of climate derives from studies by the Greek philosopher Aristotle, who identified the three main climatic zones known to the ancient world; the equatorial torrid zone, the polar frigid zone and in between the favoured temperate zone of the Mediterranean world. Aristotle's three climatic zones can be directly linked to the three main atmospheric circulation cells that we now recognise within the Earth's atmosphere. These three cells are the Hadley cell, the Polar cell and the Ferrel cell. Based on the clear association between the traditional Greek concept of climate and the modern meteorological concept of atmospheric circulation cells, we propose that climate be defined as the presence and action of a particular circulation cell type within a given planetary latitudinal zone. We discuss how with knowledge of three simple meteorological parameters of tropopause elevation, tropopause temperature and lapse rate for each atmospheric cell, combined with the measurement of the area of that cell, the average global surface temperature can be calculated. By means of a mathematical model, the Dynamic-Atmosphere Energy-Transport (DAET) climate model we apply an individual climate analysis to each of the three atmospheric cells, and next generate a parallel composite model of the Earth's planetary climate using these data. We apply the concepts and techniques of the adiabatic version of the DAET climate model, and show how this model can be compared with the published NASA image of the Earth's outgoing long-wave radiation recorded by the CERES (Clouds and the Earth's Radiant Energy System) Instrument onboard the NASA Aqua Satellite. Our analysis of the CERES image suggests that the Tibetan plateau forms a permanent geological thermal radiant leak point in the Earth's atmosphere. We also compare the observed temperature found at the maximum elevation of the Antarctic ice cap with the freezing point of super-cooled water, and suggest that there is therefore a temperature controlled and latent heat related upper limit to the vertical development of a continental icecap.

show abstract

“…For a resolution of this paradox we propose the adoption of a new climate model, the Dynamic Atmosphere Energy Transport (DAET) model, that is based on meteorological principles and is applicable to all solar illuminated terrestrial type astronomic bodies that possess a dense semi-opaque thermally radiant atmosphere [3,17,18].…”

mentioning

confidence: 99%

An Analysis of the Earth’s Energy Budget

Wilde¹,

Mulholland²

2020

IJAOS

Self Cite

View full text Add to dashboard Cite

In this paper we quantify and attribute by inspection the constituent elements of the power intensity radiant flux transmission for the atmosphere of the Earth, as recorded in the following two published sources; Oklahoma Climatological Survey and Kiehl and Trenberth. The purpose of our analysis is to establish the common elements of the approach used in the formulation of these works, and to conduct an assessment of the two approaches by establishing a common format for their comparison. By applying the standard analysis of a geometric infinite series feed-back loop to an equipartition (half up and half down) diabatic distribution used for the atmospheric radiant flux to all elements of the climate model; our analysis establishes the relative roles of radiant and mass-motion carried energy fluxes that are implicitly used by the authors in their respective analyses. Having established the key controls on energy flux within each model, we then conduct for the canonical model a series of "what-if" scenarios to establish the limits of temperature rise that can be achieved for specific variations in the controls used to calculate the global average temperature. Our analysis establishes that, for the current insolation and Bond albedo, the maximum temperature that can be achieved for a thermally radiant opaque atmosphere is a rise to 29°C. This global average temperature is achieved by a total blocking of the surface-to-space atmospheric window. In order to raise the global average atmospheric temperature to the expected value of 36°C for a putative Cretaceous hothouse world, it is therefore necessary to reduce the planetary Bond albedo. The lack of continental icecaps, and the presence of flooded continental shelves with epeiric seas in a global eustatic high stand sea level, is invoked as an explanation to support the modelling concept of a reduced global Bond albedo during the Cretaceous period. The geological evidence for this supposition is mentioned with reference to published sources.

show abstract

Inverse Climate Modelling Study of the Planet Venus

Cited by 6 publications

References 17 publications

The Application of the Dynamic Atmosphere Energy Transport Climate Model (DAET) to Earth's Semi-Opaque Troposphere

The Application of the Dynamic Atmosphere Energy Transport Climate Model (DAET) to Earth's Semi-Opaque Troposphere

Return to Earth: A New Mathematical Model of the Earth’s Climate

An Analysis of the Earth’s Energy Budget

Contact Info

Product

Resources

About