Changes of Long-wave and Sort-wave Radiations at Ground Surface during Dust Storms at Dunhuang, China

Aerosols have a direct radioactive and forcing because they scatter and absorb solar and infrared radiation in the atmosphere. Mineral dust is a major contributor to aerosol loading and optical thickness. The characteristics of short-wave and long-wave radiation variations at ground surfaces during some dust storms were analyzed by intensive observations at two different environments: desert and oasis. When a dust storm occurs, the incoming short-wave radiation deceases and long-wave radiation increases. Increasing in long-wave radiation is greater in oasis than in desert indicating there is a warmer dust layer there.