Observational evidence that a feedback control system with proportional-integral-derivative characteristics is operating on atmospheric surface temperature at global scale

" Here we provide statistically significant observational evidence that a feedback control system moderating atmospheric temperature is presently operating coherently at global scale. Further, this control system is of a sophisticated type, involving the corrective feedback not only of a linear error term but also its derivative and its integral. This makes it of the same type as the most widely used control system developed by humans, the proportional-integral-derivative (PID) control system." {Credits 1}

" The provision of evidence for or against the biosphere being the source of the control system is beyond the scope of this study. Suffice it to say here that the control system for which we provide evidence carries out exactly the task that Gaia is hypothesised to carry out. Further research is required on this question." {Credits 1}

{Credits 1} 🎪 Leggett, L. M. W., & Ball, D. A. (2020). Observational evidence that a feedback control system with proportional-integral-derivative characteristics is operating on atmospheric surface temperature at global scale. Tellus A: Dynamic Meteorology and Oceanography, 72(1), 1-14. © 2020 The Author(s). This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License.