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Find the start of the growing season based on daily average temperatures.

Usage

start_of_growing_season_mtd(temperatures, first_possible_DOY = 1)

Arguments

temperatures

vector Daily average temperatures in degree Celsius.

first_possible_DOY

int Only consider days of the year from this value onward.

Value

int DOY of the growing season start according to the MTD.

Details

This function implements the *multicriterial thermal definition* (MTD) as described in chapter 2.3.1.3 of the dissertation of Andreas Schaumberger: Räumliche Modelle zur Vegetations- und Ertragsdynamik im Wirtschaftsgrünland, 2011, ISBN-13: 978-3-902559-67-8

See also

[start_of_growing_season()]

Examples

# Create fake temperatures
ts = c(0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 6, 6, 6, 6, 3, 3, 3, 3, 3, 6, 6, 6, 
6, 5, 6, 7, 8, 9, 10, 11, 12)
start_of_growing_season_mtd(ts)
#> [1] 25