Evaluation of long term variation of Aeolian dust and it's impact on radiation

摘要

Aeolian mineral dust floating in the atmosphere is one of radioactive constituents both in shortwave and long wave radiation process. To evaluate how much change of Solar and Terrestrial radiation flux by Aeolian dust, it is important to estimate accurately emission, deposition and special-temporal distribution of Aeolian dust. Change of radiation flux induces change of energy partitioning in the Earth-Atmospheric global climate system. Through this repartitioning radiation energy, there would be also change of climate. In ADEC research project, systematic field observation and measurement was done in arid region of west-north China and Japan about dust emission processes, physical and optical characterization of dust, transport and special-temporal distribution of dust. To do simulating features from observation and measurement, dust emission, deposition and transport model were developed, and combined with atmospheric general circulation model. It is also combined with radiation model which can evaluate the effect of Aeolian dust on radiation flux.