Physical robustness of canopy temperature models for crop heat stress simulation across environments and production conditions

A - Papers appearing in refereed journals

Webber, H., White, J. W., Kimball, B. A., Ewert, F., Asseng, S., Rezaei, E. E., Pinter, P. J., Hatfield, J., Reynolds, M. P., Ababaei, B., Bindi, M, Doltra, J., Ferrise, R., Kage, Henning, Kassie, B.T., Kersebaum, K.-C., Luig, A., Olesen, J. E., Semenov, M. A., Stratonovitch, P., Ratjen, A. M., LaMorte, R. L., Leavitt, S. W., Hunsaker, D. J., Wall, G. W. and Martre, P. 2017. Physical robustness of canopy temperature models for crop heat stress simulation across environments and production conditions. Field Crops Research. 216, pp. 75-88.

AuthorsWebber, H., White, J. W., Kimball, B. A., Ewert, F., Asseng, S., Rezaei, E. E., Pinter, P. J., Hatfield, J., Reynolds, M. P., Ababaei, B., Bindi, M, Doltra, J., Ferrise, R., Kage, Henning, Kassie, B.T., Kersebaum, K.-C., Luig, A., Olesen, J. E., Semenov, M. A., Stratonovitch, P., Ratjen, A. M., LaMorte, R. L., Leavitt, S. W., Hunsaker, D. J., Wall, G. W. and Martre, P.
Abstract

Despite widespread application in studying climate change impacts, most crop models ignore complex interactions among air temperature, crop and soil water status, CO2 concentration and atmospheric conditions that influence crop canopy temperature. The current study extended previous studies by evaluating Tc simulations from nine crop models at six locations across environmental and production conditions. Each crop model implemented one of an empirical (EMP), an energy balance assuming neutral stability (EBN) or an energy balance correcting for atmospheric stability conditions (EBSC) approach to simulate Tc. Model performance in predicting Tc was evaluated for two experiments in continental North America with various water, nitrogen and CO2 treatments. An empirical model fit to one dataset had the best performance, followed by the EBSC models. Stability conditions explained much of the differences between modeling approaches. More accurate simulation of heat stress will likely require use of energy balance approaches that consider atmospheric stability conditions.

KeywordsHeat stress
Crop model improvement
Heat and drought interactions
Climate change impact assessments
Canopy temperature
Wheat
Year of Publication2017
JournalField Crops Research
Journal citation216, pp. 75-88
Digital Object Identifier (DOI)doi:10.1016/j.fcr.2017.11.005
Publication dates
Online14 Nov 2017
Copyright licenseCC BY
PublisherElsevier Science Bv
ISSN0378-4290

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