Japan Geoscience Union Meeting 2014

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Poster

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[U-04_29PO1] Frontiers of Atmospheric Science: Airborne Research of Earth Science

Tue. Apr 29, 2014 2:00 PM - 3:15 PM Poster (3F)

Convener:*Tatsuhiko Hara(International Institute of Seismology and Earthquake Engineering, Building Research Institute ), Kou Yamada(Waseda University ), Keiko Konya( Research Institute for Global Change, Japan Agency for Marine-Earth Science and Technology ), Miwa Kuri(International Research Institute of Disaster Science, Tohoku University ), Hisao Ando(Department of Earth Sciences, College of Science, Ibaraki University ), Chair:Tatsuhiko Hara(International Institute of Seismology and Earthquake Engineering, Building Research Institute ), Kuri Miwa(International Research Institute of Disaster Science, Tohoku University), Kou Yamada(Waseda University ), Keiko Konya

2:00 PM - 3:15 PM

[U04-P01] Aerosol particles collected using aircrafts from anthropogenic sources and biomass burning and electron microscopy

*Kouji ADACHI1 (1.Meteorological Research Institute)

Keywords:Electron microscope, East Asia, Northwest US, A-Force, BBOP, MILAGRO

Aerosol particles collected during four sampling campaigns using aircrafts were analyzed using transmission electron microscopes (TEM). The samples were collected from two A-Force campaigns in 2013 (winter and summer) conducted in Japan and Korea, BBOP campaign in 2013 in the USA, and MILAGRO campaign in 2006 in Mexico. These campaigns aim to characterize aerosol particles from regional transportation, biomass burning, and both. The samples collected using aircrafts are useful for characterization of particle agings, especially changes of their mixing states, from emissions as the aircrafts can chase plumes of different aging periods. An example of such aerosol-particle aging is tar ball formation in biomass burning smoke. Tar ball is spherical, organic aerosol particles commonly from combustion smoke of a wide range of biomass burning. At the early stage of the emission, tar balls are liquid but as they age in the smoke, they become solid and spherical. Sets of biomass burning aerosol samples with different aging stages collected using an aircraft revealed such processes in atmosphere. I will also discuss the samples collected over Japan during the A-Force campaigns.