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Representation of nitrogen in climate change forecasts

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The models used by the IPCC are yet to provide realistic predictions for nitrogen emissions from the land to the air and water. Natural isotopic benchmarks offer a simple solution to this emerging global imperative.

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Figure 1: CLM-CN projections used by the IPCC versus natural isotopic benchmarks.

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Acknowledgements

We thank W. Wieder and C. Koven for access to CLM-CN models. This work was supported by NSF grants EAR-1411,368 and DEB-1150,246, and the Andrew W. Mellon Foundation (to B.Z.H.).

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B.Z.H. designed the research and wrote the manuscript; A.R.M. and E.B. provided comments and edits. B.Z.H. and E.B. developed the nitrogen isotope model. A.R.M. prepared the figures and ran the CLM model against nitrogen isotopic benchmarks.

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Correspondence to Benjamin Z. Houlton.

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Houlton, B., Marklein, A. & Bai, E. Representation of nitrogen in climate change forecasts. Nature Clim Change 5, 398–401 (2015). https://doi.org/10.1038/nclimate2538

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