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The International Land Model Benchmarking (ILAMB) System: Design, Theory, and Implementation

Open access
Collier, Nathan, Hoffman, Forrest M., Lawrence, David M., Keppel‐Aleks, Gretchen, Koven, Charles D., Riley, William J., Mu, Mingquan, Randerson, James T.·2018·Journal of Advances in Modeling Earth Systems

Abstract

The increasing complexity of Earth system models has inspired efforts to quantitatively assess model fidelity through rigorous comparison with best available measurements and observational data products. Earth system models exhibit a high degree of spread in predictions of land biogeochemistry, biogeophysics, and hydrology, which are sensitive to forcing from other model components. Based on insights from prior land model evaluation studies and community workshops, the authors developed an open source model benchmarking software package that generates graphical diagnostics and scores model performance in support of the International Land Model Benchmarking (ILAMB) project. Employing a suite of in situ, remote sensing, and reanalysis data sets, the ILAMB package performs comprehensive model assessment across a wide range of land variables and generates a hierarchical set of web pages containing statistical analyses and figures designed to provide the user insights into strengths and weaknesses of multiple models or model versions. Described here is the benchmarking philosophy and mathematical methodology embodied in the most recent implementation of the ILAMB package. Comparison methods unique to a few specific data sets are presented, and guidelines for configuring an ILAMB analysis and interpreting resulting model performance scores are discussed. ILAMB is being adopted by modeling teams and centers during model development and for model intercomparison projects, and community engagement is sought for extending evaluation metrics and adding new observational data sets to the benchmarking framework.

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Metadata

Authors
Collier, N., Hoffman, F. M., Lawrence, D. M., Keppel‐Aleks, G., Koven, C. D., Riley, W. J., Mu, M., & Randerson, J. T.
Venue
Journal of Advances in Modeling Earth Systems
Published
2018-11
Volume
10
Issue
11
Pages
2731-2754
ISSN
1942-2466 (ISSN-L)
OpenAlex
W2897957760
Cited by
447
References
62
FWCI
19.00
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: The International Land Model Benchmarking (ILAMB) System: Design, Theory, and Implementation. https://app.cochat.ai/papers/10.1029/2018ms001354
The paper
Collier, N., Hoffman, F. M., Lawrence, D. M., Keppel‐Aleks, G., Koven, C. D., Riley, W. J., Mu, M., & Randerson, J. T. (2018). The International Land Model Benchmarking (ILAMB) System: Design, Theory, and Implementation. Journal of Advances in Modeling Earth Systems. https://doi.org/10.1029/2018ms001354

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