Cloudy Day Sunny Day
February 3, 2012 7:35 AM Subscribe
What is the sunniest day of the year? and how is that determined?
Of course this varies by location. For me, right now, that's Portland Oregon, but next month these architects I work with might consider a building in a different location.
posted by Prince_of_Cups to science & nature (3 answers total)
I am asked, given TMY3 data (here's a list of the relevant data in the TMY3 set
), how to determine the sunniest days and most overcast days in the typical meteorological year data set.
Are "sunniest day" (or "least overcast day") and "most overcast day" defined in meteorology? or are they bogus data deployed by evening news weatherpeople to fill air time?
Is there an accepted means to determine the record day for least and most overcast, taking into account direct/diffuse normal/horizontal illuminance and hourly sky cover?
Bonus question: can anyone recommend a good textbook introduction to meteorology that provides an understanding of the definitions and statistics used in the field?