Preprints
https://doi.org/10.5194/acp-2016-182
https://doi.org/10.5194/acp-2016-182
13 Apr 2016
 | 13 Apr 2016
Status: this preprint was under review for the journal ACP but the revision was not accepted.

Spatiotemporal variations in atmospheric aerosols in East Asia: Identifying local pollutants and transported Asian aerosols in Osaka, Japan using DRAGON

Makiko Nakata, Itaru Sano, Sonoyo Mukai, and Brent N. Holben

Abstract. In this work, we document the spatial and temporal variations of atmospheric aerosols in East Asia, specifically focusing on the NASA/AERONET-Osaka site in March 2012 during the AERONET “DRAGON-Japan” campaign. Air pollution has become a serious issue in East Asia in recent years, with particular problems caused by fine particles having diameters of up to 2.5 μm (PM2.5). Emissions of anthropogenic aerosols are known to increase with economic growth, whereas natural dust concentrations show significant variation with season and changing wind patterns. We focus on variations in the mass concentrations of particulate matter (PM) gathered by a sampler (SPM-613D) at the NASA/AERONET-Osaka site in March 2012, and have compositionally analyzed individual PM types using a scanning electron microscope (SEM) coupled with an energy dispersive X-ray analyzer (EDX). Our data show that Asian aerosols derived from distal sources were unequivocally detected in Japan on 11th March 2012. Such pollutants can be carried by winds from continental China and subsequently merge with local emissions, thus accentuating air pollution problems.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Makiko Nakata, Itaru Sano, Sonoyo Mukai, and Brent N. Holben
 
Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Makiko Nakata, Itaru Sano, Sonoyo Mukai, and Brent N. Holben
Makiko Nakata, Itaru Sano, Sonoyo Mukai, and Brent N. Holben

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Short summary
We document the spatial and temporal variations of atmospheric aerosols in East Asia, specifically focusing on the NASA/AERONET-Osaka site in March 2012 during the AERONET “DRAGON-Japan” campaign. It has been shown that airborne pollutants can influence both the local atmosphere near to their source and relatively remote locations due to long-range transportation.
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