Index Geophysics

eng Influence of weather types on concentrations of metallic components in airborne PM10 in Zagreb, Croatia

hrv Utjecaj tipova vremena na razine koncentracija metala sadržanih u frakciji lebdećih čestica PM10 u atmosferi iznad Zagreba

eng This study investigates the influence of weather types found over the continental part of Croatia on daily PM10 concentrations and concentrations of metallic compounds in PM10 (namely manganese, lead and cadmium) in air during 2000–2002 period. Pollutant concentrations were measured at the northern, residential part of Zagreb, far from major pollution sources. Weather types were determined from synoptic charts. In the employed categorization six different patterns were recognized: radiation weather type, high pressure ridge, precipitation weather type, southeastern advection, northeastern advection and wind weather type. The most frequently, elevated concentrations were related to radiation weather type and southeastern advection, while the lowest concentrations were recorded during the wind weather type. Obtained results generally suggest a major role of the local pollution sources, and particularly of the Zagreb industrial zone, in suspended particles/metallic compounds pollution. Since cadmium exhibits somewhat different behavior, the role of the long-range transport in cadmium pollution needs to be further investigated. Synoptic conditions favorable for elevated concentrations occurred in about 37% of investigated days. Typically, these conditions are characterized by 1) the weak winds and turbulence, and consequently, inefficient pollutant concentration dilution (the nighttime and wintertime radiative conditions); or 2) southeastern airflow (southeastern advection and daytime radiative conditions), which transports pollutants from industrial zone of Zagreb towards the measuring site. Due to the latter, particulate pollutants emitted in the industrial zone pass rather frequently above the eastern part of Zagreb.

hrv U radu je istražen utjecaj tipova vremena na dnevne koncentracije frakcije lebdećih čestica PM10 te olova, mangana i kadmija sadržanih u PM10 u razdoblju od 2000. do zaključno 2002. godine. Koncentracije su mjerene u sjevernom, rezidancijalnom dijelu Zagreba, podalje od većih izvora onečišćujućih tvari. Tipovi vremena (radijacijski, greben
visokog tlaka, oborinski, vjetreni te jugoistočna i sjeverozapadna advekcija), određeni su na temelju sinoptičkih karata. Povišene koncentracije primijećene su tijekom radijacijskoga tipa i jugoistočne advekcije, a najniže tijekom vjetrenoga tipa vremena. Rezultati općenito ukazuju na važnu ulogu lokalnih izvora onečišćenja, naročito industrijske zone. Kako je slika za kadmij donekle drugačija, u daljnjem radu potrebno je ispitati ulogu daljinskog prijenosa u onečišćenju kadmijem. Uvjeti koji pogoduju povićenim razinama
onečišćenja dogodili su se tijekom promatranog razdoblja u 37% ispitanih dana, a općenito ih karakterizira: 1) slab vjetar i slaba turbulencija, odnosno slabo razrijeđivanje
onečišćujuće tvari (noću i zimi tijekom radijacijskog tipa vremena), ili 2) jugoistočno strujanje (pri jugoistočnoj advekciji te danju tijekom radijacijskog tipa) koje prenosi polutante od industrijske zone prema mjernom mjestu. Stoga onečišćujuće tvari koje su emitirane u industrijskoj zoni prilično često prolaze nad istočnim dijelom Zagreba.

Bešlić, Ivan

Šega, Krešimir

Čačković, Mirjana

Bencetić Klaić, Zvjezdana

Vučetić, Višnja

eng PM10; lead; manganese; cadmium; local sources; long-range transport

hrv PM10; olovo; mangan; kadmij; lokalni izvori; daljinski transport

Andrija Mohorovicic Geophysical Institute

2007

text

info:eu-repo/semantics/article

info:eu-repo/semantics/publishedVersion

application/pdf

https://hrcak.srce.hr/19918

eng https://hrcak.srce.hr/file/31191

Geofizika

ISSN 0352-3659 (Print)

ISSN 1846-6346 (Online)

Volume 24

Issue 2

eng

info:eu-repo/semantics/openAccess

All manuscripts published on-line are subject to Creative Commons Attribution-NonCommercial 4.0 International License which permits users to read, download, copy, redistribute, print, search, or link to the full texts of these articles in any medium or format. Also, users can remix, transform and build upon the material, provided the original work is properly cited and any changes properly indicated. They may not use the material for commercial purposes.

By submitting a manuscript, the author accepts the application of the Creative Commons Attribution-NonCommercial 4.0 International License.