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Matti Narkia

VitD Duration of Vitamin D Synthesis in Human Skin - 0 views

zardoz.nilu.no/...VitD.html

vitamin D vitamin_D production synthesis skin cutaneous hours calculator tool season latitude date altitude weather clouds time location UVB UV radiation duration

shared by Matti Narkia on 25 Feb 09 - Cached
  • Matti Narkia on 25 Feb 09
     
    Vitamin D production in human skin occurs only when UV radiation exceeds a threshold. From simulations of UV irradiances, the VitD www page ( http://zardoz.nilu.no/~olaeng/fastrt/VitD.html) computes the daily duration of dermal vitamin D production at midday when UV radiation exceeds the required threshold. The daily duration depends on latitude, time, total ozone, clouds, aerosols, surface reflectivity and altitude all of which can be specified by the user
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