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Titolo:
Middle and lower troposphere aerosol characteristics and ozone concentrations over northwestern Greece during STAAARTE 1997
Autore:
Koloutsou-Vakakis, S; Helmis, CG; Assimakopoulos, V; Gusten, H;
Indirizzi:
Univ Athens, Dept Appl Phys, Athens 15784, Greece Univ Athens Athens Greece 15784 ns, Dept Appl Phys, Athens 15784, Greece Univ London Imperial Coll Sci Technol & Med, Ctr Environm Toxicol, London SW7 2PE, England Univ London Imperial Coll Sci Technol & Med London England SW7 2PE gland Aristotelian Univ Salonika, Lav Heat Transfer & Environm Engn, Thessaloniki 54006, Greece Aristotelian Univ Salonika Thessaloniki Greece 54006 oniki 54006, Greece Univ Karlsruhe, Forschungszentrum Karlsruhe, Inst Meteorol & Klimaforsch, D-76021 Karlsruhe, Germany Univ Karlsruhe Karlsruhe Germany D-76021 sch, D-76021 Karlsruhe, Germany
Titolo Testata:
ATMOSPHERIC ENVIRONMENT
fascicolo: 8, volume: 35, anno: 2001,
pagine: 1517 - 1526
SICI:
1352-2310(2001)35:8<1517:MALTAC>2.0.ZU;2-E
Fonte:
ISI
Lingua:
ENG
Soggetto:
FIELD MEASUREMENT CAMPAIGN; GREATER THESSALONIKI AREA; SIZE-DISTRIBUTION;
Keywords:
air pollution; aerosol size distribution; urban aerosol; ozone tropospheric;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Physical, Chemical & Earth Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Helmis, CG Univ Athens, Dept Appl Phys, Phys BLdg 5,Off A-21,Panepistimioupolis, Athens 15784, Greece Univ Athens Phys BLdg 5,Off A-21,Panepistimioupolis Athens Greece 15784
Citazione:
S. Koloutsou-Vakakis et al., "Middle and lower troposphere aerosol characteristics and ozone concentrations over northwestern Greece during STAAARTE 1997", ATMOS ENVIR, 35(8), 2001, pp. 1517-1526

Abstract

Accumulation aerosol particle distributions were measured on 14 June 1997 during two research flights over northwestern Greece, including the greaterThessaloniki area (GTA), At flight altitudes of about 5000m (<550mb), accumulation mode number particle size distributions appeared to be unimodal with a maximum in the first bin of the measured number size distribution witha mid-point of 0.11 <mu>m. At lower altitudes and over the GTA, accumulation mode particle size distributions were bimodal with a first mode peak at 0.125 mum and a second mode peak at 0.275 mum. The second mode was more pronounced in areas of higher relative humidity, thus indicating the presence of deliquescent aerosols, but also in areas where high O-3 concentrations were measured. Ozone concentrations ranged between 25 and 60 ppb at high altitudes east of GTA and between 50 and 110ppb over the city of Thessaloniki with the maximum measured at an altitude of about 500 m, This is consistentwith the local topographical and meteorological conditions, mainly due to the nocturnal inversion and the development of local circulation flows (land and sea breeze) over the city. (C) 2001 Elsevier Science Ltd. All rights reserved.

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Documento generato il 02/04/20 alle ore 09:07:23