Submitted as: model description paper
24 May 2022
Submitted as: model description paper | 24 May 2022
Status: this preprint is currently under review for the journal GMD.

GCAM-CDR v1.0: Enhancing the Representation of Carbon Dioxide Removal Technologies and Policies in an Integrated Assessment Model

David R. Morrow, Raphael Apeaning, and Garrett Guard David R. Morrow et al.
  • Institute for Carbon Removal Law and Policy, American University, Washington, DC, 20016, USA

Abstract. This paper introduces GCAM-CDR 1.0, an integrated assessment model for climate policy based on the open-source Global Change Analysis Model (GCAM). GCAM-CDR extends GCAM v5.4 by enabling users to model additional carbon dioxide removal (CDR) technologies and additional policies and controls related to CDR. New CDR technologies include terrestrial enhanced weathering with basalt, ocean liming, and additional versions of direct air capture. New CDR policies and controls include integration of bioenergy with carbon capture and storage (BECCS) into the CDR market, interregional trade in CDR, exogenous control over the rate of growth of CDR, the ability to set independent targets for emissions abatement and CDR, and a variety of mechanisms for setting demand for CDR at the regional and/or global level. These extensions enhance users’ ability to study the potential roles of CDR in climate policy.

David R. Morrow et al.

Status: open (until 19 Jul 2022)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse

David R. Morrow et al.

Model code and software

GCAM-CDR 1.0 David R. Morrow, Raphael Apeaning, and Garrett Guard

David R. Morrow et al.


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Short summary
GCAM-CDR is a variant of the Global Change Analysis Model that makes it easier to study the roles that carbon dioxide removal (CDR) might play in climate policy. Building on GCAM 5.4, GCAM-CDR adds several extra technologies to permanently remove carbon dioxide from the air and enables users to simulate a wider range of CDR-related policies and controls.