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

Alistair Rogers, Belinda E. Medlyn, Jeffrey S. Dukes, Gordon Bonan, Susanne von Caemmerer, Michael C. Dietze, Jens Kattge, Andrew D.B. Leakey, Lina M. Mercado, Ülo Niinemets, I. Colin Prentice, Shawn P. Serbin, Stephen Sitch, Danielle A. Way, Sönke Zaehle

Research output: Contribution to journalComment/opinionResearchpeer-review

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.

LanguageEnglish
Pages22-42
Number of pages21
JournalNew Phytologist
Volume213
Issue number1
DOIs
Publication statusPublished - 1 Jan 2017

Fingerprint

Photosynthesis
photosynthesis
Physiological Phenomena
Vapor Pressure
Carbon Cycle
Research
Uncertainty
Soil
model uncertainty
Light
global change
vapor pressure
Temperature
Water
soil water content
assimilation (physiology)
biosphere
canopy
environmental factors
carbon

Keywords

  • carbon dioxide CO
  • light
  • soil water content
  • stomatal conductance
  • temperature
  • terrestrial biosphere models
  • vapor pressure deficit (VPD)

Cite this

Rogers, A., Medlyn, B. E., Dukes, J. S., Bonan, G., von Caemmerer, S., Dietze, M. C., ... Zaehle, S. (2017). A roadmap for improving the representation of photosynthesis in Earth system models. New Phytologist, 213(1), 22-42. https://doi.org/10.1111/nph.14283
Rogers, Alistair ; Medlyn, Belinda E. ; Dukes, Jeffrey S. ; Bonan, Gordon ; von Caemmerer, Susanne ; Dietze, Michael C. ; Kattge, Jens ; Leakey, Andrew D.B. ; Mercado, Lina M. ; Niinemets, Ülo ; Prentice, I. Colin ; Serbin, Shawn P. ; Sitch, Stephen ; Way, Danielle A. ; Zaehle, Sönke. / A roadmap for improving the representation of photosynthesis in Earth system models. In: New Phytologist. 2017 ; Vol. 213, No. 1. pp. 22-42.
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Rogers, A, Medlyn, BE, Dukes, JS, Bonan, G, von Caemmerer, S, Dietze, MC, Kattge, J, Leakey, ADB, Mercado, LM, Niinemets, Ü, Prentice, IC, Serbin, SP, Sitch, S, Way, DA & Zaehle, S 2017, 'A roadmap for improving the representation of photosynthesis in Earth system models', New Phytologist, vol. 213, no. 1, pp. 22-42. https://doi.org/10.1111/nph.14283

A roadmap for improving the representation of photosynthesis in Earth system models. / Rogers, Alistair; Medlyn, Belinda E.; Dukes, Jeffrey S.; Bonan, Gordon; von Caemmerer, Susanne; Dietze, Michael C.; Kattge, Jens; Leakey, Andrew D.B.; Mercado, Lina M.; Niinemets, Ülo; Prentice, I. Colin; Serbin, Shawn P.; Sitch, Stephen; Way, Danielle A.; Zaehle, Sönke.

In: New Phytologist, Vol. 213, No. 1, 01.01.2017, p. 22-42.

Research output: Contribution to journalComment/opinionResearchpeer-review

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AU - Medlyn, Belinda E.

AU - Dukes, Jeffrey S.

AU - Bonan, Gordon

AU - von Caemmerer, Susanne

AU - Dietze, Michael C.

AU - Kattge, Jens

AU - Leakey, Andrew D.B.

AU - Mercado, Lina M.

AU - Niinemets, Ülo

AU - Prentice, I. Colin

AU - Serbin, Shawn P.

AU - Sitch, Stephen

AU - Way, Danielle A.

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Rogers A, Medlyn BE, Dukes JS, Bonan G, von Caemmerer S, Dietze MC et al. A roadmap for improving the representation of photosynthesis in Earth system models. New Phytologist. 2017 Jan 1;213(1):22-42. https://doi.org/10.1111/nph.14283