FLOOD07755

• County: Statewide
• Basin: Statewide
• Title: Engineering and Design Runoff from Snowmelt
• Date: 1/5/1960
• Prepared By: US Army Corps of Engineers
• Floodplain - Doc Type: Educational/Technical/Reference Information

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Figure 1" Seasonal a7id lalit1Ulinal variation of daily .~olar radi,L1ion outside the earth's atmosphuc, l"n langll ys"

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estimate incoming radiation indirC'ctly from duration of sunshine data, observations of cloud
conditions, or diurn;l:~ air temperature ilnctuationB. (Ilefercl1c(, is made to chs, 5 and G of IlSnov,r
Hydrology" for description of met bods for estimating incoming solar radiation.)
The local environment has a marked pffect upon the :lmOllnt of sobr radiation re('rived on the
sno\v surface. The rdative ratio of t he daily sobr radilJ1 ion illCid<'Ilt upon a 8nmv surface to that.

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AVill'roge Insolof!on WI fh
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Fj'{Jure 2. Seasonal f!Q:'iation of insolation at Central Si:'TNl Sno"v Laboratory, shov.'/"ng at'no;;pheric d{'plelion tnth
dOlldless .skies.

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