ATOC 1050 Lecture Notes - Lecture 4: Ultraviolet, Smog, Solar Irradiance

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Each type of electromagnetic wave has a different wavelength. Wavelength (cid:644) is measured by the distance from one crest to the next. Visible light: our eyes are sensitive to light w/ wavelengths between 400 700 nm: called white light but made up of different colors. I(cid:374)f(cid:396)a(cid:396)ed (cid:396)adiatio(cid:374): (cid:396)adiatio(cid:374) (cid:449)e (cid:272)a(cid:374)"t see (cid:271)ut (cid:449)e (cid:272)a(cid:374) feel (cid:894)heat(cid:895) Ultraviolet radiation: radiation that causes sunburns: shorter in wavelengths. Have more energy and can do more damage to skin cells. Sun emits most of energy at short wavelengths. Earth emits most of its energy at long wavelengths. Amount of energy or material that passes through a given area per unit time. Flu(cid:454) of e(cid:374)e(cid:396)g(cid:455) f(cid:396)o(cid:373) the su(cid:374) that (cid:396)ea(cid:272)hes top of ea(cid:396)th"s at(cid:373)osphe(cid:396)e. Shortwave radiation / uv radiation (peak 0. 5 (cid:645)m) Some insolation is reflected by clouds and the surface. Remaining insolation is absorbed by the atmosphere and land/ocean surface.

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