function to calculate n (sunshine duration)

General
1

Hey, does anybody know, if there is a a way to calculate the sunshine duration in hours in R?
I have the daily solar radiation, the latitude and the longitude.

2

Hi @tim1,
Check out the suncalc package available from CRAN.

3

thanks for your answer, but in need the actual sunshine duration, probably calculated with the solar radiation, not the potential sunshine hours from sunrise to sunset.

4

do you have solar radiation data ?

5

yes i have daily solar radiation data

6

Do you have knowledge of the mathematics that should be used, and want help converting your math knowledge to R code ; or are you seeking for someone else existing R function ? The latter will require someone working in this field to see this thread and respond to you with their knowledge of what is available; or someone out of the field to search for it with google-fu ; the former has perhaps more general odds assuming that the calculation is somewhat straightforward (and that the data you have is sufficient to compute it on)

7

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