Model Name: AFRC Wheat 2 photpd submodel

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Description

To calculate today's daylength and photoperiod. Daylength is calculated following the treatment of Sellers, Physical Climatology,pp 15-16 and Appendix 2. Daylength is calculated with a correction for atmospheric refraction equivalent to 50 minutes of a degree. Photoperiod is calculated assuming that light is perceived until the centre of the sun is 6 degrees below the horizon.

This is a submodel of AFRC Wheat 2 model in Simile notation (the XML version will follow shortly). All variables and parameters that are inputs to the submodel are in the "inputs " submodel box, all variables changed by the submodel are outputted via the "outputs" submodel box.

 
Contact/Model Admin Chris Davey, Aberystwyth University, cdd@aber.ac.uk
Submitted By Chris Davey, Aberystwyth University, cdd@aber.ac.uk
Submission Date 2011-02-04 15:46:39.0
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Journal Eur. J. Agron. 2(2): 69-82. 
Title AFRCWHEAT2: A Model of the Growth and Development of Wheat Incorporating Responses to Water and Nitrogen.  
Year 1993 
Authors Porter J 
Abstract  
URL