Building Interpretable Climate Emulators for Economics

A linear model to emulate the complexities of physical non-linear dynamics in more sophisticated models, such as Earth System Models (ESMs) or Earth System Models of Intermediate Complexity (ESMIC), and to capture the variability of carbon cycle responses across these models. The focus is on two carbon cycle model configurations: serial and parallel reservoir configurations. The models include three reservoir classes: atmosphere (A), ocean (O), and land biosphere (L). The serial model (3SR) consists of three sequentially connected carbon reservoirs, with the atmosphere connected to the upper ocean (O1), and the ocean connected to the deep ocean (O2). The parallel model (4PR) introduces the land biosphere, where carbon from the atmosphere is divided into two parallel streams: land biosphere and ocean.