Faculty Profiles - OHATA Sho

Papers - OHATA Sho

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Abundance and emission flux of the anthropogenic iron oxide aerosols from the East Asian continental outflow Reviewed Open Access

A. Yoshida, S. Ohata, N. Moteki, K. Adachi, T. Mori, M. Koike, and A. Takami

Journal of Geophysical Research: Atmospheres Vol. 123 page： 11194-11209 2018.10

Abundance of light-absorbing anthropogenic iron oxide aerosols in the urban atmosphere and their emission sources Reviewed Open Access

S. Ohata, A. Yoshida, N. Moteki, K. Adachi, Y. Takahashi, M. Kurisu, and M. Koike

Journal of Geophysical Research: Atmospheres Vol. 123 page： 8115-8134 2018.8

Anthropogenic combustion iron as a complex climate forcer Reviewed International coauthorship Open Access

Matsui Hitoshi, Mahowald Natalie M., Moteki Nobuhiro, Hamilton Douglas S., Ohata Sho, Yoshida Atsushi, Koike Makoto, Scanza Rachel A., Flanner Mark G.

Nature communications Vol. 9 ( 1 ) page： 1593 2018.4

Seasonal progression of the deposition of black carbon by snowfall at Ny-Ålesund, Spitsbergen Reviewed International coauthorship

P. R. Sinha, Y. Kondo, K. Goto-Azuma, Y. Tsukagawa, K. Fukuda, M. Koike, S. Ohata, N. Moteki, T. Mori, N. Oshima, E. J. Forland, M. Irwin, J.-C. Gallet, and C. A. Pedersen

Journal of Geophysical Research: Atmospheres Vol. 123 page： 997-1016 2018.1

Anthropogenic iron oxide aerosols enhance atmospheric heating Reviewed Open Access

Nobuhiro Moteki, Kouji Adachi, Sho Ohata, Atsushi Yoshida, Tomoo Harigaya, Makoto Koike, Yutaka Kondo

NATURE COMMUNICATIONS Vol. 8 page： 15329 2017.5

Language：English Publishing type：Research paper (scientific journal) Publisher：NATURE PUBLISHING GROUP

Combustion-induced carbonaceous aerosols, particularly black carbon (BC) and brown carbon (BrC), have been largely considered as the only significant anthropogenic contributors to shortwave atmospheric heating. Natural iron oxide (FeOx) has been recognized as an important contributor, but the potential contribution of anthropogenic FeOx is unknown. In this study, we quantify the abundance of FeOx over East Asia through aircraft measurements using a modified single-particle soot photometer. The majority of airborne FeOx particles in the continental outflows are of anthropogenic origin in the form of aggregated magnetite nanoparticles. The shortwave absorbing powers (P-abs) attributable to FeOx and to BC are calculated on the basis of their size-resolved mass concentrations and the mean P-abs(FeOx)/P-abs(BC) ratio in the continental outflows is estimated to be at least 4-7%. We demonstrate that in addition to carbonaceous aerosols the aggregate of magnetite nanoparticles is a significant anthropogenic contributor to shortwave atmospheric heating.

DOI： 10.1038/ncomms15329

Evaluation of ground-based black carbon measurements by filter-based photometers at two Arctic sites Reviewed Open Access

P. R. Sinha, Y. Kondo, M. Koike, J. A. Ogren, A. Jefferson, T. E. Barrett, R. J. Sheesley, S. Ohata, N. Moteki, H. Coe, D. Liu, M. Irwin, P. Tunved, P.K. Quinn, and Y. Zhao

Journal of Geophysical Research: Atmospheres Vol. 122 page： 3544-3572 2017.5

アラスカ積雪中のブラックカーボンの緯度分布 Reviewed Open Access

塚川佳美，東久美子，近藤豊，杉浦幸之助，大畑祥，森樹大，茂木信宏，小池真，平林幹啓，Remi Dallmayr，榎本浩之

雪氷 Vol. 78 ( 6 ) page： 459-478 2016.11

A key process controlling the wet removal of aerosols: new observational evidence Reviewed Open Access

S. Ohata, N. Moteki, T. Mori, M. Koike, and Y. Kondo

Scientific Reports Vol. 6 page： 34113 2016.10

Effects of wet deposition on the abundance and size distribution of black carbon in East Asia Reviewed Open Access

Y. Kondo, N. Moteki, N. Oshima, S. Ohata, M. Koike, Y. Shibano, N. Takegawa, and K. Kita

Journal of Geophysical Research: Atmospheres Vol. 121 page： 4691-4712 2016.5

Improved technique for measuring the size distribution of black carbon particles in liquid water Reviewed Open Access

T. Mori, N. Moteki, S. Ohata, M. Koike, K. Goto-Azuma, Y. Miyazaki, and Y. Kondo

Aerosol Science and Technology Vol. 50 page： 242-254 2016.2

Detection of light-absorbing iron oxide particles using a modified single-particle soot photometer Reviewed International coauthorship Open Access

A. Yoshida, N. Moteki, S. Ohata, T. Mori, R. Tada, P. Dagsson-Waldhauserová, and Y. Kondo

Aerosol Science and Technology Vol. 50 ( 3 ) page： i-iv 2016.1

Hygroscopicity of materials internally mixed with black carbon measured in Tokyo Reviewed International coauthorship Open Access

S. Ohata, J. P. Schwarz, N. Moteki, M. Koike, A. Takami, and Y. Kondo

Journal of Geophysical Research: Atmospheres Vol. 121 page： 362-381 2016.1

Technique and theoretical approach for quantifying the hygroscopicity of black-carbon-containing aerosol using a single particle soot photometer Reviewed International coauthorship

J. P. Schwarz, A. E. Perring, M. Z. Markovic, R. S. Gao, S. Ohata, J. Langridge, D. Law, R. McLaughlin, and D. W. Fahey

Journal of Aerosol Science Vol. 81 page： 110-126 2015.1

Wet deposition of black carbon at a remote site in the East China Sea Reviewed

T. Mori, Y. Kondo, S. Ohata, N. Moteki, H. Matsui, N. Oshima, and A. Iwasaki

Journal of Geophysical Research: Atmospheres Vol. 119 2014.8

Evaluation of a method to measure black carbon particles suspended in rainwater and snow samples Reviewed International coauthorship

S. Ohata, N. Moteki, J. P. Schwarz, D. W. Fahey, and Y. Kondo

Vol. 47 page： 1073-1082 2013.8

Evaluation of a method for measurement of the concentration and size distribution of black carbon particles suspended in rainwater Reviewed Open Access

S. Ohata, N. Moteki, and Y. Kondo.

Aerosol Science and Technology Vol. 45 page： 1326-1336 2011.6

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