gst | R Documentation |
Growing Season Temperature (GST). Mean daily temperature in growing season.
gst(mx, mn, lati, dates)
mx |
vector of daily maximum temperature series. |
mn |
vector of daily minimum temperature series. |
lati |
numeric value indicating the latitude of location. |
dates |
vector of dates corresponding with daily temprature series |
Depending on the latitude, the function detects the hemisphere and considers growing season from 1st April to 31st October (northern hemisphere) or from 1st October to 30rd April (southern hemisphere).
A numeric vector with annual values is returned.
Jones G, Duff A, Hall A, Myers J (2010) Spatial Analysis of Climate in Winegrape Growing Regions in the Western United States. Am. J. Enol. Vitic. 61:3.
gst(mx = daily_tmax, mn = daily_tmin, dates = seq.Date(as.Date('1981-01-01'), as.Date('2010-12-31'), by ='day'), lati = 42)
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