紫外辐射微弱是极地上空臭氧层薄弱区的主要成因

ULTRAVIOLET FEEBLENESS IS THE MAIN REASON OF OZONOSPHERE THINER AREA IN THE POLES

大气中的Ｏ_３主要是Ｏ_２吸收阳光中的紫外辐射生成的；即使没有人为的臭氧消耗性物质。Ｏ_３也在不断分解和消耗、Ｏ_３的生成和消耗若能保持平衡．则臭氧层保持稳定。否则臭氧层将变稀薄：分析了极地冬半年大气受紫外辐射微弱。Ｏ_３的生成量剧减．但Ｏ_３的分解和消耗却在继续．结果出现臭氧层薄弱区；认为北极必然与南极一样在冬半年有臭氧层薄弱区。

Most of ozone in the atmosphere is made from molecular oxygen by the shining of ultraviolet ray from sunlight. Ozone in the atmosphere is also continue resolved and depleted in some chemical reactions. even if there is no man-made ozone deplete materials. If the reactions of ozone synthesis and resolution are in balance. the ozonosphere is stable; analyses that ultraviolet ray is very weak in the half year of winter at the Poles, area, so the synthesize amount of ozone is abated. but the depletion of ozone goes continue. the result is that the ozonospere becomes meagre; Just like in the South Pole. in the North Pole there should be ozonosphere thiner area in the half year of winter.