Tuesday, April 29, 2025

Turn it to *11*! The greenhouse tactics that accelerate our ERW research — Carbon Drawdown Initiative

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After we designed the experiment idea we determined that within the greenhouse we’ll flip each potential knob which may have an effect on weathering to 11 on a scale of 0-10. We prioritized weathering efficiency and sign power over being “closer to nature”.

It’s continuously heat, moist and we’ve got twelve months of vegetation per yr. Additionally, the replicas (4 for every experiment) are a lot much less heterogeneous than actual life area settings (a number of mixing and homogenization throughout setup). Our most used rock software charge is on the larger finish of real-life quantities, 40 tons per hectare. Some experiments even have 100, 200 and 400 t/ha. A number of experiments have solely 20 t/ha so we will see the distinction a smaller quantity makes.

The thought behind that is to generate the quickest and largest potential weathering sign which we will decide up simpler utilizing varied measurement strategies that may be (or won’t be) appropriate to evaluate the rock weathering. There are plenty of unknowns on this area. The rationale for this turn-to-11-approach was our expertise: Our earlier experiments within the exterior world didn’t provide you with a notable weathering sign quick sufficient.

After all, we’re a considerably away from the issues that occur in an actual world area, deliberately. Earlier than we will return to doing MRV in nature we wished to provide legitimate ERW alerts within the greenhouse. Taking this new information again into “noisy” open nature will nonetheless stay onerous sufficient, however no less than we might then have a good suggestion what to search for.

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