RT Journal Article
T1 Daily and hourly chemical impact of springtime transboundary aerosols on Japanese air quality
A1 Moreno, T.
A1 Kojima, T.
A1 Amato, F.
A1 Lucarelli, F.
A1 Rosa Díaz, Jesús de la
A1 Calzolai, G.
A1 Nava, S.
A1 Chiari, M.
A1 Alastuey Urós, José Andrés
A1 Querol, X.
A1 Gibbons, W.
AB The regular eastward drift of transboundaryaerosol intrusions from the Asian mainland into the NW Pacificregion has a pervasive impact on air quality in Japan,especially during springtime. Analysis of 24-h filter sampleswith Inductively Coupled Plasma Atomic EmissionSpectroscopy (ICP-AES) and Mass Spectrometry (ICP-MS),and hourly Streaker with Particle Induced X-ray Emission(PIXE) samples collected continuously for six weeks revealthe chemistry of successive waves of natural mineral desertdust (“Kosa”) and metalliferous sulphatic pollutants arrivingin western Japan during spring 2011. The main aerosolsources recognised by Positive Matrix Factorization (PMF)analysis of Streaker data are mineral dust and fresh sea salt(both mostly in the coarser fraction PM2.5−10), As-bearingsulphatic aerosol (PM0.1−2.5), metalliferous sodic particulatematter (PM) interpreted as aged, industrially contaminatedmarine aerosol, and ZnCu-bearing aerosols. Whereas mineraldust arrivals are typically highly transient, peaking overa few hours, sulphatic intrusions build up and decline moreslowly, and are accompanied by notable rises in ambient concentrationsof metallic trace elements such as Pb, As, Zn,Sn and Cd. The magnitude of the loss in regional air qualitydue to the spread and persistence of pollution from mainlandAsia is especially clear when cleansing oceanic air advectswestward across Japan, removing the continental influenceand reducing concentrations of the undesirable metalliferouspollutants by over 90 %. Our new chemical database, especiallythe Streaker data, demonstrates the rapidly changingcomplexity of ambient air inhaled during these transboundaryevents, and implicates Chinese coal combustion as themain source of the anthropogenic aerosol component.
PB European Geosciences Union
SN 1680-7316
SN 1680-7324
YR 2013
FD 2013
LK http://hdl.handle.net/10272/7926
UL http://hdl.handle.net/10272/7926
LA eng
NO Moreno, T., Kojima, T., Amato, F., Lucarelli, F., Rosa Díaz, J., Calzolai, G., Nava, S., Chiari, M., Alastuey Urós, J.A., Querol, X., Gibbons, W.: "Daily and hourly chemical impact of springtime transboundary aerosols on Japanese air quality". Atmospheric Chemistry and Physics. Vol. 13, 1411–1424 (2013). ISSN 1680-7316
DS Repositorio Institucional de la Universidad de Huelva
RD 31 may 2026