Influence of Surface Roughness on ERW - Kukla

How much carbon can enhanced rock weathering actually remove? In this episode, @geoengineering1 talks with Tyler Kukla of CarbonPlan about how assumptions about rock surface roughness can dramatically change enhanced weathering estimates.They discuss why surface area is critical to weathering rates, how commonly used roughness calculations can overestimate available surface area, and what this means for modeled CO₂ removal. The conversation also explores the differences between surface-area- and water-transport-limited weathering, the challenges of scaling enhanced weathering, and why better measurements are needed to constrain models.The discussion is based on Tyler Kukla et al.’s CarbonPlan article, How Surface Roughness Scaling Can Mislead Enhanced Weathering Predictions. https://carbonplan.org/research/modeling-bytes-02-roughness