yearmonthday_to_julianday: Get the julian day for a year/month/day date
Description
This function uses the date package's
mdy.date function to get the Julian
day (count of the day in the year, from 1-365, or 1-366
for leap years) from the input year, month, and day.
Usage
yearmonthday_to_julianday(year, month, day)
Arguments
year
as numeric, 4 digits
month
as numeric, 1-2 digits
day
as numeric, 1-2 digits
Value
julian_day, the julian day between 1-365 or 1-366 (for
leap years)
References
Ackerman S, Frey R, Strabala K, Liu Y, Gumley L, Baum B
and Menzel P (2010). "Discriminating clear-sky from cloud
with MODIS algorithm theoretical basis document (MOD35)."
MODIS Cloud Mask Team, Cooperative Institute for
Meteorological Satellite Studies, University of Wisconsin
- Madison. .