Computation of Times of Sunrise, Sunset, and Twilight in Or Near Mountainous Terrain

Computation of Times of Sunrise, Sunset, and Twilight in Or Near Mountainous Terrain
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Publisher :
Total Pages : 6
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ISBN-10 : MINN:31951D029957207
ISBN-13 :
Rating : 4/5 (07 Downloads)

Synopsis Computation of Times of Sunrise, Sunset, and Twilight in Or Near Mountainous Terrain by : Bill C. Ryan

An electronic calculator with trigonometric functions can be used to compute times of sunrise, sunset, or twilight, or time of desired illumination at any location in mountainous terrain. The method is more convenient and versatile, and less cumbersome than using tables. Latitude, longitude, elevation, day of the year (1 to 366), and slope to the horizon at the azimuth of the sun at sunrise and sunset are necessary for the computations. The effects of elevation of the observation point and blocking of the sun's radiation by terrain surrounding tlie observation point are included in the computations.

U.S.D.A. Forest Service Research Note PSW

U.S.D.A. Forest Service Research Note PSW
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Publisher :
Total Pages : 152
Release :
ISBN-10 : CHI:092024090
ISBN-13 :
Rating : 4/5 (90 Downloads)

Synopsis U.S.D.A. Forest Service Research Note PSW by : Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.)

Publications

Publications
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Publisher :
Total Pages : 20
Release :
ISBN-10 : MINN:31951D006686344
ISBN-13 :
Rating : 4/5 (44 Downloads)

Synopsis Publications by :

1978 Research Accomplishments

1978 Research Accomplishments
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Publisher :
Total Pages : 124
Release :
ISBN-10 : MINN:31951D02996257Z
ISBN-13 :
Rating : 4/5 (7Z Downloads)

Synopsis 1978 Research Accomplishments by : United States. Forest Service