SURFER v2.0: a flexible and simple model linking anthropogenic CO2 emissions and solar radiation modification to ocean acidification and sea level rise

• Published in: Geoscientific Model Development
• Main Authors: Martínez Montero, Marina, Crucifix, Michel, Couplet, Victor, Brede, Nuria, Botta, Nicola
• Format: Text
• Language: English
• Published: 2022
• Subjects: Ocean acidification
• Online Access: https://doi.org/10.5194/gmd-15-8059-2022; https://gmd.copernicus.org/articles/15/8059/2022/

We present SURFER, a novel reduced model for estimating the impact of CO 2 emissions and solar radiation modification options on sea level rise and ocean acidification over timescales of several thousands of years. SURFER has been designed for the analysis of CO 2 emission and solar radiation modification policies, for supporting the computation of optimal (CO 2 emission and solar radiation modification) policies and for the study of commitment and responsibility under uncertainty. The model is based on a combination of conservation laws for the masses of atmospheric and oceanic carbon and for the oceanic temperature anomalies, and of ad-hoc parameterisations for the different sea level rise contributors: ice sheets, glaciers and ocean thermal expansion. It consists of 9 loosely coupled ordinary differential equations, is understandable, fast and easy to modify and calibrate. It reproduces the results of more sophisticated, high-dimensional earth system models on timescales up to millennia.