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Modeling study of long‐range transport of Asian dust and anthropogenic aerosols from East Asia
Author(s) -
Takemura Toshihiko,
Uno Itsushi,
Nakajima Teruyuki,
Higurashi Akiko,
Sano Itaru
Publication year - 2002
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2002gl016251
Subject(s) - asian dust , aerosol , dust storm , environmental science , east asia , storm , atmospheric sciences , climatology , range (aeronautics) , mineral dust , meteorology , geography , geology , china , materials science , archaeology , composite material
A three‐dimensional aerosol transport‐radiation model, SPRINTARS, successfully simulates the long‐range transport of the large‐scale Asian dust storms from East Asia to North America which crossed the North Pacific Ocean during the springtime of 2001 and 2002. It is found from the calculated dust optical thickness that 10 to 20% of the Asian dust around Japan reached North America. The simulation also reveals the importance of the contribution of anthropogenic aerosols, which are carbonaceous and sulfate aerosols emitted from the industrialized areas in East Asia, to air turbidity during the dust storms. The contribution of the anthropogenic aerosol to the total optical thickness is simulated to be of a comparable order to that of the Asian dust, which is consistent with the observed values of the particle size index from the satellite and ground‐based sun/sky photometry.