New modelling technique for improving crop model performance - Application to the GLAM model

A - Papers appearing in refereed journals

Droutsas, I., Challinor, A. J., Swiderski, M. and Semenov, M. A. 2019. New modelling technique for improving crop model performance - Application to the GLAM model. Environmental Modelling & Software. 118, pp. 187-200.

AuthorsDroutsas, I., Challinor, A. J., Swiderski, M. and Semenov, M. A.
Abstract

Crop models simulate growth and development and they are often used for climate change applications. However, they have a variable skill in the simulation of crop responses to extreme climatic events. Here, we present a new dynamic crop modelling method for simulating the impact of abiotic stresses. The Simultaneous Equation Modelling for Annual Crops (SEMAC) uses simultaneous solution of the model equations to ensure internal model consistency within daily time steps; something that is not always guaranteed in the usual sequential method. The SEMAC approach is implemented in GLAM, resulting in a new model version (GLAM-Parti). The new model shows a clear improvement in skill under water stress conditions and it successfully simulates the acceleration of leaf senescence in response to drought. We conclude that SEMAC is a promising crop modelling technique that might be applied to a range of models.

KeywordsSEMAC; GLAM-Parti; Allometric relationships; Model improvement; Water stress
Year of Publication2019
JournalEnvironmental Modelling & Software
Journal citation118, pp. 187-200
Digital Object Identifier (DOI)doi:10.1016/j.envsoft.2019.05.005
Open accessPublished as green open access
FunderBiotechnology and Biological Sciences Research Council
Funder project or codeDesigning Future Wheat - WP1 - Increased efficiency and sustainability
Publisher's version
Accepted author manuscript
Output statusPublished
Publication dates
Online08 May 2019
Publication process dates
Accepted01 May 2019
PublisherElsevier Sci Ltd
ISSN1364-8152

Permalink - https://repository.rothamsted.ac.uk/item/8wwwx/new-modelling-technique-for-improving-crop-model-performance-application-to-the-glam-model

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