bedd {agroclim}R Documentation

Biologically effective degree-days (BEDD)

Description

Biologically effective degree-days (BEDD). Gladstones, J. (1992).

Usage

bedd(mx, mn, lati, dates)

Arguments

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

Details

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).

Value

The sum of degree-days (BEDD) is returned as a numeric value.

References

Gladstones, J. (1992) Viticulture and environment (Winetitles: Adelaide).

Examples


  bedd(mx = daily_tmax,
    mn = daily_tmin,
    dates = seq.Date(as.Date('1981-01-01'),
            as.Date('2010-12-31'), by ='day'),
            lati = 42)


[Package agroclim version 0.1.0 Index]