Inclusion of a suite of weathering tracers in the cGENIE Earth system model-muffin release v.0.9.23

Markus Adloff*, Andy Ridgwell, Fanny M. Monteiro, Ian J. Parkinson, Alexander J. Dickson, Philip A.E. Pogge Von Strandmann, Matthew S. Fantle, Sarah E. Greene

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

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Abstract

The metals strontium (Sr), lithium (Li), osmium (Os) and calcium (Ca), together with their isotopes, are important tracers of weathering and volcanism-primary processes which shape the long-term cycling of carbon and other biogeochemically important elements at the Earth's surface. Traditionally, because of their long residence times in the ocean, isotopic shifts in these four elements observed in the geologic record are almost exclusively interpreted with the aid of isotope-mixing, tracer-specific box models. However, such models may lack a mechanistic description of the links between the cycling of the four metals to other geochemically relevant elements, particularly carbon, or climate. Here we develop and evaluate an implementation of Sr, Li, Os and Ca isotope cycling in the Earth system model cGENIE. The model offers the possibility to study the dynamics of these metal systems alongside other more standard biogeochemical cycles, as well as their relationship with changing climate. We provide examples of how to apply this new model capability to investigate Sr, Li, Os and Ca isotope dynamics and responses to environmental change, for which we take the example of massive carbon release to the atmosphere.

Original languageEnglish
Pages (from-to)4187-4223
Number of pages37
JournalGeoscientific Model Development
Volume14
Issue number7
DOIs
Publication statusPublished - 5 Jul 2021

Bibliographical note

Funding Information:
This research has been supported by the Natural Environment Research Council (NERC; grant nos. NE/L002434/1, Markus Adloff; NE/L011050/1 and NE/P01903X/1, Sarah E. Greene; NE/N011112/1, Fanny M. Monteiro), the NERC GW4+ Doctoral Scholarship (Markus Adloff), ERC Consolidator (grant no. 682760, Philip A. E. Pogge von Strandmann), the NSF (grant nos. 1658024 and 1702913), and the Heising Simons Foundation (Andy Ridgwell).

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