Vol.27 No.2(3) [2005]

Numerical study on Relationship between Long term variation of Asian Dust Storm and Climate factors

Yukari HARA, Itsushi UNO


To clarify the climate factors affecting inter-annual variation of dust storm, we simulate Asian dust transport over the springtime of 33-year with a regional-scale dust transport model. We found that dust emission was strongly correlated with Asian Polar Mid-latitude Index (APMI) and Arctic Oscillation (AO) in March. In April, dust emission was correlated with Far Eastern Zonal Index (Fezi). We also found that the dust transport path was shifted to southward (35N) in La Niña year, while the dust transport path shift.