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Wiley, New Phytologist, 1(213), p. 22-42, 2016

DOI: 10.1111/nph.14283

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A roadmap for improving the representation of photosynthesis in Earth system models

Journal article published in 2016 by Alistair Rogers, Be E. Medlyn ORCID, Js S. Dukes, Gordon Bonan, Susanne von Caemmerer, Mc C. Dietze, Jens Kattge, Adb D. B. Leakey, Lm M. Mercado, Ülo Niinemets, U. Niinemets, Ic Colin Prentice, Ulo Niinemets, ?? Niinemets, Sp P. Serbin ORCID and other authors.
This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Accurate representation of photosynthesis in terrestrial biosphere models (TBMs) is essential for robust projections of global change. However, current representations vary markedly between TBMs, contributing uncertainty to projections of global carbon fluxes. Here we compared the representation of photosynthesis in seven TBMs by examining leaf and canopy level responses of photosynthetic CO2 assimilation (A) to key environmental variables: light, temperature, CO2 concentration, vapor pressure deficit and soil water content. We identified research areas where limited process knowledge prevents inclusion of physiological phenomena in current TBMs and research areas where data are urgently needed for model parameterization or evaluation. We provide a roadmap for new science needed to improve the representation of photosynthesis in the next generation of terrestrial biosphere and Earth system models.