declination {EcoHydRology} | R Documentation |
Solar declination for a given day of the year.
declination(Jday)
Jday |
Julian date or day of the year [day] |
M. Todd Walter
##---- Should be DIRECTLY executable !! ---- ##-- ==> Define data, use random, ##-- or do help(data=index) for the standard data sets. ## The function is currently defined as function(Jday){ # solar declination [rad] # #Jday: Julian date or day of the year [day] # return(0.4102*sin(pi*(Jday-80)/180)) }