> The "gotcha" is that at 83 microns, this study showed only 0.15% of the theoretical CO2 capacity absorbed in the first year According to the study [1] (and t

> The "gotcha" is that at 83 microns, this study showed only 0.15% of the theoretical CO2 capacity absorbed in the first year According to the study [1] (and the article), that's because the experiment was purposely conducted in a dry climate (inland northern CA) and during a drought to determine a lower bound on the CO2 absorption capacity. More well suited (wetter) climates are expected to result in more CO2 absorption. "Given that climate change impacts such as heatwaves and droughts are already widespread, knowledge of the robustness of enhanced weathering under extreme conditions is essential to understanding its future efficacy. Here we show that enhanced weathering maintains modest carbon dioxide (CO2) removal in a multi-acre field trial under an extreme drought in California, one of the largest agricultural producers globally." 1. https://iopscience.iop.org/article/10.1088/2515-7620/acfd89 https://iopscience.iop.org/article/10.1088/2515-7620/acfd89