Kansas Mesonet · Degree Days

Degree Days

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References

Duncan, S., Fjell, D. Vanderlip, R. et. al. (2007). Corn Production Handbook. K-State Research and Extension.

Midwest Regional Climate Center, Corn Stress Degree Days

Vanderlip, R., Gerik, T., & Bean, B. W. (2003). Sorghum Growth and Development. Texas FARMER Collection.

Whitworth, R.J., Davis, H., McCornack, B. (2011). Kansas Crop Pests: Alfalfa Weevils. K-State Research and Extension.

Arguez, A., Applequist, S., Vose, R., Durre, I., Squires, M., Yin, X., (2011) NOAA's 1981-2010 Climate Normals Methodology of Temperature-related Normals.

GDU =	Daily Max Air Temp + Daily Min Air Temp	- Base Temp	Base Temp:
	2
Temperatures above ATmax will be set to ATmax			ATmax:
Temperatures below ATmin will be set to ATmin			ATmin:

Stress Degree Days =	Daily Max Air Temp	- Base Temp	Base Temp:	86
Stress Degree Days below 0 are left at 0

GDU =	Daily Max Air Temp + Daily Min Air Temp	- Base Temp	Base Temp:
	2
Temperatures below ATmin will be set to ATmin			ATmin:

GDU =	Daily Max Air Temp + Daily Min Air Temp	- Base Temp	Base Temp:
	2

Cooling Degrees =	Daily Max Air Temp + Daily Min Air Temp	- Base Temp	Base Temp:
	2

Heating Degrees = Base Temp -	Daily Max Air Temp + Daily Min Air Temp	Base Temp:
	2

GDU =	Daily Max Air Temp + Daily Min Air Temp	- Base Temp	Base Temp:
	2
Temperatures above ATmax will be set to ATmax			ATmax:
Temperatures below ATmin will be set to ATmin			ATmin:
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