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Last Post 10/28/2014 10:15 AM by  Terry Kucera
variations in ultraviolet and infrared radiation
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10/28/2014 7:30 AM
    LOS ROBLES ASTRONOMY CLUB, LOCATED IN MARACAIBO,VENEZUELA,we would be interested in knowing how these events on the Sun, affect the variation of infrared and ultravilet radiation ?? specially in tropical zones such as in the continent we live, South America, Thank you,.
    Tags: infrared

    Terry Kucera

    Basic Member

    Basic Member

    10/28/2014 10:15 AM


    I assume you are asking about the large solar flares we have been having lately. Solar flares don't affect the amount of light that gets down to the surface significantly, even in the IR (infrared) and UV (ultraviolet). The light that makes it down to the atmosphere is mostly from the regular output of the sun's surface, which is very bright, and even large flares are a relatively small blip on top of that - although we can observe flares from the ground, so there is some light that reaches the surface (they can be seen light in the H-alpha spectral line for instance. This is commonly observed by amateur astronomers, so you may know about that). Flares also put out a lot of radio waves that we can observe from Earth's surface.

    Above Earth's atmosphere in space things are a little different. Flares make a big difference if you are observing in high energy ultraviolet ("Extreme UV") or in X-rays. However, these bands of light are well blocked by Earth's atmosphere - a good thing!


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