Journal cover Journal topic
Atmospheric Chemistry and Physics An interactive open-access journal of the European Geosciences Union
Journal topic

Journal metrics

Journal metrics

  • IF value: 5.668 IF 5.668
  • IF 5-year value: 6.201 IF 5-year
    6.201
  • CiteScore value: 6.13 CiteScore
    6.13
  • SNIP value: 1.633 SNIP 1.633
  • IPP value: 5.91 IPP 5.91
  • SJR value: 2.938 SJR 2.938
  • Scimago H <br class='hide-on-tablet hide-on-mobile'>index value: 174 Scimago H
    index 174
  • h5-index value: 87 h5-index 87
Volume 16, issue 22
Atmos. Chem. Phys., 16, 14795–14803, 2016
https://doi.org/10.5194/acp-16-14795-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue: Meso-scale aerosol processes, comparison and validation studies...

Atmos. Chem. Phys., 16, 14795–14803, 2016
https://doi.org/10.5194/acp-16-14795-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 28 Nov 2016

Research article | 28 Nov 2016

Regional and local variations in atmospheric aerosols using ground-based sun photometry during Distributed Regional Aerosol Gridded Observation Networks (DRAGON) in 2012

Itaru Sano1, Sonoyo Mukai2, Makiko Nakata3, and Brent N. Holben4 Itaru Sano et al.
  • 1Faculty of Science and Engineering, Kindai University, Higashi-Osaka, Japan
  • 2REESIT, The Kyoto College of Graduate Studies for Informatics, Kyoto, Japan
  • 3Faculty of Applied Sociology, Kindai University, Higashi-Osaka, Japan
  • 4NASA Goddard Space Flight Center, Greenbelt, MD, USA

Abstract. Aerosol mass concentrations are affected by local emissions as well as long-range transboundary (LRT) aerosols. This work investigates regional and local variations of aerosols based on Distributed Regional Aerosol Gridded Observation Networks (DRAGON). We constructed DRAGON-Japan and DRAGON-Osaka in spring of 2012. The former network covers almost all of Japan in order to obtain aerosol information in regional scale over Japanese islands. It was determined from the DRAGON-Japan campaign that the values of aerosol optical thickness (AOT) decrease from west to east during an aerosol episode. In fact, the highest AOT was recorded at Fukue Island at the western end of the network, and the value was much higher than that of urban areas. The latter network (DRAGON-Osaka) was set as a dense instrument network in the megalopolis of Osaka, with a population of 12 million, to better understand local aerosol dynamics in urban areas.

AOT was further measured with a mobile sun photometer attached to a car. This transect information showed that aerosol concentrations rapidly changed in time and space together when most of the Osaka area was covered with moderate LRT aerosols. The combined use of the dense instrument network (DRAGON-Osaka) and high-frequency measurements provides the motion of aerosol advection, which coincides with the wind vector around the layer between 700 and 850 hPa as provided by the reanalysis data of the National Centers for Environmental Prediction (NCEP).

Publications Copernicus
Download
Short summary
We investigated the regional and local variation of aerosols based on large and small gridded sun photometer networks. The results show that long-range transboundary aerosols strongly affect aerosol condition over Japan even at a small island in the East China Sea. A dense instrument network (DRAGON) reveals the magnitude and variation of local aerosols.
We investigated the regional and local variation of aerosols based on large and small gridded...
Citation