Check out our new piece on potential environmental issues around enhanced weathering. Led by Charlotte Levy, we try to give clear monitoring and mitigation recommendations, rather than just a list of problems.
The supplement has loads of useful stuff, too!
Exciting Enhanced Weathering Postdoc opportunity at Yale University. If you are experienced in modeling Earth surface processes across soils, rivers, and oceans and want to improve our understanding of CO2 removal through EW (and OAE), this is your job: https://tinyurl.com/9dn7nrwc
*please share*
Our sensitivity analysis of soil-based approaches to quantify carbon dioxide removal from enhanced rock weathering is published. In short, they should be useful in most regions as long as you get your sampling protocols right & choose the right feedstock!
Enhanced weathering (EW) of silicate rocks spread onto managed lands as agricultural amendments is a promising carbon dioxide removal (CDR) approach. However, there is an obvious need for the development of tools for Measurement, Reporting, and Verification (MRV) before EW can be brought to scale. Shifts in the concentration of mobile elements measured in the solid phase of soils after application of EW feedstocks can potentially be used to track weathering and provide an estimate of the initial carbon dioxide removal of the system. To measure feedstock dissolution accurately it is necessary to control for the amount of feedstock originally present in the sample being analyzed. This can be achieved by measuring the concentration of immobile detrital elements in soil samples after feedstock addition. However, the resolvability of a signal using a soil mass balance approach depends on analytical uncertainty, the ability to accurately sample soils, the amount of feedstock relative to the amount of initial soil in a sample, and on the fraction of feedstock that has dissolved. Here, we assess the viability of soil-based mass-balance approaches across different settings. Specifically, we define a metric for tracer-specific resolvability of feedstock mass addition (φ) and calculate the feedstock application rates (a) and dissolution fractions (b) required to resolve EW. Applying calculations of a, b, and φ to a gridded soil database from the contiguous USA in combination with kno...
My PhD method chapter is finally published. Read if you are interested in how we can use lake sediments to reconstruct how silicate rock weathering has changed over the last glacial transitions. :)
It is open acces!
https://www.sciencedirect.com/science/article/pii/S0009254124001347?via%3Dihub
The field of enhanced rock weathering keeps growing: 2023 showed another ~50% increase in publications as well as some first patents...
lit list: https://tinyurl.com/ERWlit
add missing lit: tinyurl.com/ERWmorelit
Contact me if you want to help with the review project! :-)
read me first Hey there, thanks for checking out the ERW literture list! For a current review project, I am compiling a (more or less) complete list of ERW litertaure. It would be of tremendous help to me if you could check if any publications are missing - maybe even your own or your favorite o...
If you happen to be in San Francisco next week and are excited about enhanced rock weathering -- come check out my poster at the session below and/or make sure to reach out! :)
Want to learn more on how to quantify carbon dioxide removal from enhanced rock weathering? Check out our (not yet peer reviewed) review of pros and cons of different approaches as well as sources of uncertainty and ways to navigate them!
