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Istituto sull'inquinamento atmosferico

Torna all'elenco Contributi in rivista anno 2010

Contributo in rivista

Tipo: Articolo in rivista

Titolo: Sub-mm particle size distributions in a suburban Mediterranean area. Aerosol populations and their possible relationship with HONO mixing ratios

Anno di pubblicazione: 2010

Formato: Elettronico

Autori: Costabile F. (a)(b); Amoroso A (b); Wang F. (c);

Affiliazioni autori: (a) CNR-ISAC, via Fosso del Cavaliere, Rome, Italy (b) CNR, IIA, via Salaria km 29.300, 00016 Rome, Italy (c) Tsinghua university, INET, Beijing 100084, China

Autori CNR:

  • FRANCESCA COSTABILE

Lingua: inglese

Abstract: This study presents, for the first time, long-term data of sub-mm particle number size distributions in the particle size range of 14e670 nm in the Mediterranean area of Rome. Data are analysed in terms of possible aerosol populations. A particular “event” including also measurements of nitrous acid mixing ratios in the atmosphere is further analysed. High statistical correlations are established: At daytime, between the unknown HONO formation rate and the product of NO2, JNO2 , relative humidity, and sub-mm particle surface area concentration. At nighttime, between the volume concentration of the small Aitken mode particles and the HONO mixing ratios. The study would provide information on fine and ultrafine aerosol particle size distribution down to 14 nm in the Mediterranean suburban area of Rome. Besides, it would support previous works which have already provided several evidences for the existence of relations between the sub-mm aerosol populations and HONO. Our conclusions include speculations on possible daytime HONO formation mechanisms on particle surfaces in the accumulation mode size range, and nighttime mass formation mechanisms in common for the small Aitken mode particles and HONO.

Pagine da: 5258

Pagine a: 5268

Rivista:

Atmospheric environment Pergamon.
Paese di pubblicazione: Regno Unito
Lingua: inglese
ISSN: 1352-2310

Numero volume: 44

Numero fascicolo: 39

DOI: 10.1016/j.atmosenv.2010.08.018

Indicizzato da:

  • Scopus [2-s2.0-78049275379]
  • ISI Web of Science (WOS) [000284661600024]

Strutture CNR:

Moduli:

Allegati: Sub-mm particle size distributions in a suburban Mediterranean area. Aerosol populations and their possible relationship with HONO mixing ratios (application/pdf )

 
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