Solar Position and Timing for the World
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9 S eptem ber, 2009
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Solar Position and Timing for the World
Global Monitoring Division - ESRL- GMD This story entered on 9th S ep, 2009 09:40:11 AM PS T
Popular NO AA S olar Calculator Web S ite Updated: The widely accessed NO AA public S unrise/S unset and S olar Position Calculator web pages (6,000 users in August 2009 alone) are sporting a new look with added functionality m aking them easier to use. The new calculator benefits from NO AA's licensing of G oogle Earth and G oogle Maps API, and allows users to pinpoint their desired location on the fam iliar G oogle m ap interface. Accurate latitude and longitude coordinates are then com bined with the user's desired date and tim e values to generate estim ates for sunrise, sunset, solar noon and the position of the sun in the sky. Additional im provem ents allow users to save favorite locations and to plot the directions of sunrise, sunset and current solar position directly on the m ap.
Background: The NO AA S unrise/S unset Calculator web page debuted 10 years ago as an internal tool for NO AA solar radiation researchers to know the tim e of solar noon to align sensitive instrum entation. When the web pages were m ade available to the public, people from around the world started using the calculations for a wide variety of work and hobby applications. O ver the years, the solar calculators have been used for planning deep sea fishing trips, tim ing religious celebrations, designing natural lighting and passive solar heating in buildings, and even science fair projects.
S ignificance: The S olar Calculator is the fourth m ost accessed NO AA web page. Unsolicited com m ents from users (from 100s received) tell their own stories: An ecologist studying how albacore tuna behavior changes by tim e of day and night; The fire departm ent m anager of a town in O hio, who was scheduling training for the year ; A m ovie m aker on the West Coast, who needed to line up and tim e a sunset shot; A green architect who wanted to know the angles of the S un, by season, to help decide how to best construct a passive solar building; A sm all business owner who ran deep-sea fishing trips and wanted to know when to expect sunrise and sunset.
More information:
Contact information Name: Christopher R Cornwall Tel: (303) 497-7316 Ch ri stoph er.R.Corn wal l @n
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