Clear-Sky Insolation Model

This model provides one-minute insolation values for a specified location, date, and time.
It uses the same model as THIS WEB PAGE. A "pinched cosine" model can also be used
to replace minute-by-minute calculations based on solar position with this calculation:

S=Ssolar noon•cos((tsolar noon - t)/thalf day•π/2)β


The example shown is for Ssolar noon = 1000 W/m2, thalf day = 500 min, tsolar noon = 740 min,
β = 1.3. An unmodified cosine model gives values that are too high during mid-morning and mid-afternoon.
The exponent β is chosen to provide the best fit for a particular site. It may depend on
latitude and time of year. For more information about using this model, contact David Brooks.

Site Description (no single or double quotes):
Output file name (do not include .csv extension):
Latitude (+ for north):     Longitude (– for west):
Elevation: m
Solar Constant (W/m2) :
Cosine Pinch Exponent:
Sea level ("weather report") pressure (mbar):
Water Vapor (cm H2O):
Aerosol Transmission Factor:
β for "pinched cosine" model (cos(x)β):
Start date (mm/dd/yyyy):
Hours to local time (positive for west longitude):
How many days? (1440 lines of output per day!)