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Extra-terrestrial radiation

The processes of scattering and absorption of radiation in the atmosphere so significantly alter the spectral distribution that any similarity to extra terrestrial radiation is almost coincidental. Experiments with radiation between surfaces have shown that blackbody radiation theory can be extended successfully to many radiation heat transfer situations. In these situations the strict equilibrium requirements of the initial model have so far not proved to be necessary for practical designs. Most importantly the concept of temperature has proved useful in non-equilibrium radiation flux situations(3). [Pg.396]

The UVR reaching aquatic organisms in their natural habitat comes from the sun. Extra-terrestrial radiation is modified as it passes through the Earth s atmosphere and there are many factors that influence the radiation arriving at the surface of the Earth. These include the state of the atmosphere (clear, clean, cloudy, polluted), position on the Earth (latitude and altitude) and season (relative position of the sun to location on Earth). Further attenuation then occurs as the radiation passes through the water environment to reach aquatic organisms. These latter complications are dealt with in Chapter 3 here we deal only with the UVR incident at the ground, or water surface. [Pg.23]


See other pages where Extra-terrestrial radiation is mentioned: [Pg.22]    [Pg.15]    [Pg.446]    [Pg.283]    [Pg.51]    [Pg.69]    [Pg.300]    [Pg.245]    [Pg.246]   
See also in sourсe #XX -- [ Pg.23 , Pg.37 ]




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Terrestrial

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