Articles | Volume 15, issue 14
Geosci. Model Dev., 15, 5567–5592, 2022
https://doi.org/10.5194/gmd-15-5567-2022

Special issue: Joint UK Land Environment Simulator (JULES) – configurations,...

Geosci. Model Dev., 15, 5567–5592, 2022
https://doi.org/10.5194/gmd-15-5567-2022
Development and technical paper
20 Jul 2022
Development and technical paper | 20 Jul 2022

Improved representation of plant physiology in the JULES-vn5.6 land surface model: photosynthesis, stomatal conductance and thermal acclimation

Rebecca J. Oliver et al.

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Revised manuscript has not been submitted
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Cited articles

Atkin, O. K., Evans, J. R., and Siebke, K.: Relationship between the inhibition of leaf respiration by light and enhancement of leaf dark respiration following light treatment, Funct. Plant Biol., 25, 437–443, https://doi.org/10.1071/PP97159, 1998. 
Atkin, O. K., Evans, J. R., Ball, M. C., Lambers, H., and Pons, T. L.: Leaf Respiration of Snow Gum in the Light and Dark. Interactions between Temperature and Irradiance1, Plant Physiol., 122, 915–924, https://doi.org/10.1104/pp.122.3.915, 2000. 
Atkin, O. K., Scheurwater, I., and Pons, T. L.: High thermal acclimation potential of both photosynthesis and respiration in two lowland Plantago species in contrast to an alpine congeneric, Glob. Change Biol., 12, 500–515, https://doi.org/10.1111/j.1365-2486.2006.01114.x, 2006. 
Ball, M. C., Woodrow, I. E., and Berry, J. A.: A model predicting stomatal conductance and its contribution to the control of photosynthesis under different environmental conditions, in: Progress in Photosynthesis Research, edited by: Biggins, J., Martinus Nijhoff Publishers, Dordrecht, the Netherlands, 221–224, https://doi.org/10.1007/978-94-017-0519-6_48, 1987. 
Benomar, L., Lamhamedi, M. S., Pepin, S., Rainville, A., Lambert, M.-C., Margolis, H. A., Bousquet, J., and Beaulieu, J.: Thermal acclimation of photosynthesis and respiration of southern and northern white spruce seed sources tested along a regional climatic gradient indicates limited potential to cope with temperature warming, Ann. Bot.-London, 121, 443–457, https://doi.org/10.1093/aob/mcx174, 2017. 
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Short summary
We introduce new representations of plant physiological processes into a land surface model. Including new biological understanding improves modelled carbon and water fluxes for the present in tropical and northern-latitude forests. Future climate simulations demonstrate the sensitivity of photosynthesis to temperature is important for modelling carbon cycle dynamics in a warming world. Accurate representation of these processes in models is necessary for robust predictions of climate change.