Gases absorb IR radiation
The atmosphere of the Earth behaves like a blanket, retaining a portion the heat generated by solar energy. This "greenhouse effect" keeps the average temperature of the Earth about 30 degrees (C) (86 degrees F) warmer than it would be without an atmosphere. This movie describes how clouds and certain atmospheric gasses (such as water vapor and carbon dioxide) provide this warming effect.
نوشته شده توسط : خدیجه ( مینا ) ترکاشوند