Analysis of chemical weathering rates and fluxes of geogenic nutrients: application of a new global lithological map
WEDNESDAY, JUNE 20, 2012 - 3:30 PM IN EIT 3142 AT THE UNIVERSITY OF WATERLOO
Abstract:
Chemical weathering rates, mobilization of geogenic nutrients and fluxes of released elements to the ocean are largely controlled by only a few factors, such as runoff, lithology, soil properties and temperature, if the continental to global scale is considered.
This presentation will provide some examples of how "detailed" lithological maps at the regional to global scale can be applied to understand chemical weathering rates, silica-flux-patterns, P-release by chemical weathering to ecosystems, and land-ocean matter fluxes.
Future directions in the assessments of spatially explicit chemical weathering rates at the global scale will be addressed. In addition, the concept of enhanced weathering as a method to remove carbon dioxide from the atmosphere as a geoengineering technique will be introduced and constraints will be discussed.