Empirical evidence for a global atmospheric temperature
control system: physical structure
L. Mark W. Leggett* & David A. Ball
Global Risk Policy Group Pty Ltd, Townsville, Queensland, Australia
*mleggett.globalriskprogress@gmail.com
29 September 2020
Abstract
There is evidence that a natural control system influences global atmospheric surface temperature (Leggett and Ball, 2020). The present paper sets up and tests a hypothesis concerning the physical makeup of the sequential elements of the control system and its outcomes. The final outcome of the control system influences is defined as global atmospheric surface temperature. The terms used for the control system element types in the hypothesis are, in sequence: leading element, controller, and actuator. Actuators are hypothesized to affect, in turn, the final outcome: either directly, or via penultimate outcomes. The existence of the control system is evidenced by the demonstration of statistically significant one-way Granger causality across each step of the hypothesized control system sequence. Evidence is presented that the leading element of the control system, represented by the Normalized Difference Vegetation Index, is the global biosphere. The biosphere as a control system has previously been referred to as Gaia (Lovelock and Margulis, 1974). A fourth, second derivative, term is found to enhance the Proportional, Integral and Derivative process terms of the control system shown in Leggett and Ball (2020). The main actuators of the control system found are shown to be wind speed and cloud cover. Cloud cover is shown to influence the final outcome, global surface temperature, directly. It and wind speed also influence the penultimate outcomes found, those of enhanced ocean heat uptake and enhanced outgoing longwave radiation. These together lead to control system output to the final outcome, global atmospheric temperature. Overall, evidence for the activity of the control system is present across many major physical dimensions of the Earth’s atmosphere.
Full paper URL: https://arxiv.org/ftp/arxiv/papers/2011/2011.06708.pdf