An Evaluation of Formulas for Estimating Clear-sky Insolation Over the Ocean PDF Download

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An Evaluation of Formulas for Estimating Clear-sky Insolation Over the Ocean

An Evaluation of Formulas for Estimating Clear-sky Insolation Over the Ocean PDF Author: Ronald K. Reed
Publisher:
ISBN:
Category : Atmospheric transparency
Languages : en
Pages : 874

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Book Description
Recent oceanic data and observations from five coastal sites in the National Weather Service solar radiation network are compared with a formula for computing clear-sky insolation derived from the Smithsonian Meteorological Tables, using a transmission coefficient of 0.7. The results are generally in good agreement, and they suggest that this formula is suitable for computing insolation over the ocean for a wide range of latitudes. The comparison also indicates that a correction to the formula for middle latitudes is not warranted. The one other formula in good agreement with that form the Smithsonian Tables is one derived by Lumb; Laevastu's formula is only acceptable at sun angles less that 50°, and Berliands' estimates are too high at all solar altitudes. The formula from the Smithsonian Tables can be used to compute insolation over the oceans with a random error of estimate probably not exceeding 5% for periods of a few days or longer.