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发表于 2020-3-15 15:34:05
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zwyi 发表于 2020-3-15 10:32
2 R' k; p( Z* q/ P- E" ?: h8 a1 [CLOUD COVER, if heavy can blockmost UV radiation. Thin or brokenclouds allow most UV rays through. ... ; P" p' v& E' n6 s# l
CLOUD COVER, if heavy can blockmost UV radiation. Thin or brokenclouds allow most UV rays through. Puffy, fair weather clouds deflectrays and can increase UV radiationreaching the surface.
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3 v) ]$ p$ D' ~% q4 A1 c厚云遮挡大部分紫外线;薄云则大部分紫外线都能穿透过去。而晴天里蓬松的云会折射紫外线,增加到达地面的辐射量。
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+ m `, V `# y% O谢谢,学习了!! V4 S# f$ P- b2 U7 e3 b* q0 ?
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