Emergence of global scaling behaviour in the coupled Earth-atmosphere interaction

TL;DR

This paper demonstrates that the Earth's topography and atmospheric temperature fluctuations both follow power-law scaling laws with the same universal exponent, indicating a fundamental geometric influence on climate dynamics.

Contribution

It reveals a universal scaling law linking Earth's topography and atmospheric temperature fluctuations, suggesting a geometric control on climate system behavior.

Findings

Power-law behavior in Earth's topography.

Temperature fluctuations share the same universal exponent.

Implication of Earth's geometry in climate dynamics.

Abstract

Scale invariance property in the global geometry of Earth may lead to a coupled interactive behaviour between various components of the climate system. One of the most interesting correlations exists between spatial statistics of the global topography and the temperature on Earth. Here we show that the power-law behaviour observed in the Earth topography via different approaches, resembles a scaling law in the global spatial distribution of independent atmospheric parameters. We report on observation of scaling behaviour of such variables characterized by distinct universal exponents. More specifically, we find that the spatial power-law behaviour in the fluctuations of the near surface temperature over the lands on Earth, shares the same universal exponent as of the global Earth topography, indicative of the global persistent role of the static geometry of Earth to control the steady state of a dynamical atmospheric field. Such a universal feature can pave the way to the theoretical understanding of the chaotic nature of the atmosphere coupled to the Earth's global topography.