GCAM-CDR v1.0: enhancing the representation of carbon dioxide removal technologies and policies in an integrated assessment model

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). extends GCAM v5.4 by enabling users to additional carbon dioxide removal (CDR) technologies and policies controls related CDR. New CDR include terrestrial enhanced weathering with basalt, ocean liming, versions of direct air capture. integration bioenergy capture storage (BECCS) into market, interregional trade in CDR, exogenous control over rate growth ability set independent targets emissions abatement a variety mechanisms setting demand at regional and/or global level. These extensions enhance users' study potential roles policy.