How we assess the CDR effects of EW experiments

How we calculate the amount of CO₂ that has been removed from the atmosphere by weathering in our lysimeter experiments.

In our lysimeter experiments, we use the following method to quantify the increase in alkalinity export of a treated experiment compared to the control experiment based on leachate water measurements, pictured in Figure 1. It allows us to calculate the amount of CO₂ that has been removed from the atmosphere by weathering:

A detailed description can be found in our blog post How we assess the CDR effects of EW experiments.