Forecast Storms

If you know where and when to look, you can treat yourself to a colourful parade of atmospheric haloes, spots and pillars. These images can tell you some little(a)g about the clouds viewgraph and possible changes in the weather. All of these images are created by well-heeled shining through cirrostratus clouds. These clouds occur at an peak of 6,000-12,000 metres. They appear as a thin sheet or point (strata) that is pure white. The layer of cloud is so thin (only 100-450 metres) that is doesnt obscure the sunshine or moon, so you should be adapted to invite your shadow. Cirrostratus is made of many types of ice crystals. However, quaternion crystal shapes are responsible for producing most of the commonly see haloes-plate crystals, columns, crest columns and bullets. The most obvious halo is found more or less the sun. If the layer of cirrostratus is extensive, youll see an entire ring. Within the layer of cloud, sunlight is striking and passing through the sides of randomly-oriented ice crystals. As the sunlight passes through each crystal, the light changes complaint, or refracts. The radius of the hale depends on the amount of change in the direction of the suns light. Usually this is 22 degrees. Since the sun is 1/2 of a degree across, the radius of the halo is 44 sun-widths.

at times you may see a second halo at 46 degrees from the sun (that is, with a radius of 92 sun-widths). This is produced by sunlight passing through both the side and fag of each crystal. Moonlight will also produce a halo, around the moon, with the proper layer of cirrostatus. Another common opthalmic effect is known as mock suns or sun dogs or parhelia (Greek for with the sun). These bright spots on any side of the sun, outside of the halo, occur when sunlight passes through the sides of capped columns, bullets and plate crystals, when these crystals are arranged with their sides vertical. The crystals wobble, diffusing and smearing the colours of the mock sun. You... If you want to get a full essay, order it on our website: Ordercustompaper.com

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