Multiple input control strategies for robust and adaptive climate engineering in a low order 3-box model

Bonetti, F. and McInnes, C. (2018) Multiple input control strategies for robust and adaptive climate engineering in a low order 3-box model. Proceedings of the Royal Society of London Series A: Mathematical, Physical and Engineering Sciences, 474(2217), 20180447. (doi: 10.1098/rspa.2018.0447) (PMID:30333711)

Abstract

A low-order 3-box energy balance model for the climate system is employed with a multivariable control scheme for the evaluation of new robust and adaptive climate engineering strategies using solar radiation management. The climate engineering measures are deployed in three boxes thus representing northern, southern and central bands. It is shown that, through heat transport between the boxes, it is possible to effect a degree of latitudinal control through the reduction of insolation. The approach employed consists of a closed-loop system with an adaptive controller, where the required control intervention is estimated under the RCP4.5 radiative scenario. Through the online estimation of the controller parameters, adaptive control can overcome key issues related to uncertainties of the climate model, the external radiative forcing and the dynamics of the actuator used. In fact, the use of adaptive control offers a robust means of dealing with unforeseeable abrupt perturbations, as well as the parametrization of the model considered, to counteract the RCP4.5 scenario, while still providing bounds on stability and control performance. Moreover, applying multivariable control theory also allows the formal controllability and observability of the system to be investigated in order to identify all feasible control strategies.

• Item Type: Articles
• Additional Information: This work was supported by a University of Glasgow PhD scholarship (FB) and a Royal Society 680 Wolfson Research Merit Award (CM).
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Bonetti, Federica and McInnes, Professor Colin
• Authors: Bonetti, F., and McInnes, C.
• College/School: College of Science and Engineering > School of Engineering > Systems Power and Energy
• Journal Name: Proceedings of the Royal Society of London Series A: Mathematical, Physical and Engineering Sciences
• Publisher: The Royal Society
• ISSN: 1364-5021
• ISSN (Online): 1471-2946
• Published Online: 12 September 2018
• Copyright Holders: Copyright © 2018 The Authors
• First Published: First published in Proceedings of the Royal Society of London Series A: Mathematical, Physical and Engineering Sciences 2018
• Publisher Policy: Reproduced in accordance with the publisher copyright policy
• Data DOI: 10.6084/m9.figshare.c.4211603