Start Date
1-4-2024 3:45 PM
End Date
1-4-2024 5:00 PM
Access Type
Open Access
Abstract
ERW has garnered increasing interest as a promising technique for durable carbon dioxide removal, offering a range of potential co-benefits including increased soil pH and nutrient release. However, the impacts of ERW on river chemistry and the potential loss of initially captured CO2 during river transport remain poorly constrained. The current lack of tools for robustly predicting the effect of riverine degassing on the ERW life cycle undermines the use of this practice as a carbon mitigation strategy. I will present results from a dynamic river network model designed to quantify the downstream carbon leakage of ERW in the North American river network. This modeling framework can serve as a toolkit for quantifying the impacts of carbon cycling in downstream catchments on the overall ERW life cycle.
Biography
Shuang Zhang earned a B.S. in Geology from Peking University and a Ph.D. in Geochemistry from Yale University. Dr. Zhang studies global carbon and biogeochemical cycling, examines Earth's surface environment responses to climate perturbations, and explores carbon dioxide removal methods to mitigate climate change, with the aim of enhancing our understanding and management of future environmental and climate changes. Specifically, his current focus is quantifying the potential of using enhanced rock weathering (ERW) to reduce atmospheric CO2 levels on both global and regional scales.
Additional Links
ORCID
0000-0003-1745-4642
Downstream Leakage of Enhanced Rock Weathering
ERW has garnered increasing interest as a promising technique for durable carbon dioxide removal, offering a range of potential co-benefits including increased soil pH and nutrient release. However, the impacts of ERW on river chemistry and the potential loss of initially captured CO2 during river transport remain poorly constrained. The current lack of tools for robustly predicting the effect of riverine degassing on the ERW life cycle undermines the use of this practice as a carbon mitigation strategy. I will present results from a dynamic river network model designed to quantify the downstream carbon leakage of ERW in the North American river network. This modeling framework can serve as a toolkit for quantifying the impacts of carbon cycling in downstream catchments on the overall ERW life cycle.