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Poster TitleDevelopment and testing of ALMv1-ECA-CNP
AuthorsQing Zhu. William Riley (Unlicensed), Jinyun Tang
GroupLand
ExperimentBGC
Poster CategoryEarly Result
Submission TypePoster
Poster Link



Abstract

We describe here model development and benchmarking for one of the two land model versions integrated in ALMv1 that will participate in the BGC Inter-comparison: ALMv1-ECA-CNP. ALMv1-ECA-CNP is unique in several ways that strongly affect the model's estimates of terrestrial C budgets: (1) plants have a flexible CNP stoichiometry; (2) plant allocation and storage are dynamic and respond to nutrient, water, and light stresses; (3) a multi-element co-limitation concept replaces Liebig's law of the minimum for nutrient controls on photosynthesis; (4) multiple substrate & nutrient competition is based on the Equilibrium Chemistry Approximation (ECA); and (5) BeTR vertically-resolved multi-phase reactive transport solver is used for numerically robust solutions. This poster describes the model assumptions, implementation, benchmarking, and predictions of global C, N, and P dynamics.