Radiative cooling phenomenon,

• Morning of the frost, spring of the garden
  http://blog.livedoor.jp/happajuku/archives/51569355.html
  With king's weather from the day before yesterday, morning of yesterday which becomes radiational cooling phenomenon was cold to below the −2℃, the frost was in Tabata

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• あなたも当然、奇跡を起こせる！
  http://blog.goo.ne.jp/imaryuu139/e/baa4d49cdb98b255163d906fe62154aa
  Because present daytime, being clear, there was a sunlight, it seems that the one which than cloudiness is clear air temperature becomes lower with radiational cooling phenomenon

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• 今朝の日の出（11/22）
  http://blog.goo.ne.jp/je4hmp/e/cbba9c37b1b47ca7daca7a6417388a0a
  The fog whose now also morning is thin occurred, we have been cold, but it did not become dense, because first the sky, was covered in the all over cloud, it means from that either radiational cooling phenomenon did not occur,…

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