Editing Diffuse sky radiation (section)

===The diffused skylight effect===
[[File:Canopy.jpg|thumb|left|Well lit understorey areas due to [[overcast]] clouds creating diffuse/[[soft light|soft sunlight]] conditions, that permits photosynthesis on leaves under the canopy.]] 
This diffused skylight, owing to its intrinsic nature, can illuminate under-[[canopy (biology)|canopy]] leaves permitting more efficient total whole-plant [[photosynthesis]] than would otherwise be the case,<ref name="web.archive.org"/><ref name="ReferenceA"/> and also increasing evaporative cooling, from vegetated surfaces.<ref>{{Cite journal|last1=Chakraborty|first1=TC|last2=Lee|first2=Xuhui|last3=Lawrence|first3=David M.|date=2021|title=Strong Local Evaporative Cooling Over Land Due to Atmospheric Aerosols|journal=Journal of Advances in Modeling Earth Systems|volume=13|issue=5|doi=10.1029/2021ms002491|bibcode=2021JAMES..1302491C |s2cid=236541532 |issn=1942-2466|doi-access=free}}</ref> In stark contrast, for totally clear skies and the direct sunlight that results from it, shadows are cast onto [[understorey]] leaves, limiting plant photosynthesis to the top canopy layer.<ref name="web.archive.org"/><ref name="ReferenceA"/> This increase in global agriculture from the volcanic haze layer also naturally results as a product of other aerosols that are not emitted by volcanoes, such, "moderately thick smoke loading" pollution, as the same mechanism, the "aerosol direct radiative effect" is behind both.<ref name="dx.doi.org"/><ref>Impact of atmospheric aerosol light scattering and absorption on terrestrial net primary productivity, Cohan et al. ''GLOBAL BIOGEOCHEMICAL CYCLES'' 2002 VOL. 16, NO. 4, 1090, {{doi|10.1029/2001GB001441}}</ref><ref>Direct observations of the effects of aerosol loading on net ecosystem CO2 exchanges over different landscapes. Niyogi et al. ''Geophysical Research Letters'' Volume 31, Issue 20, October 2004 {{doi|10.1029/2004GL020915}}</ref>
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