NDA@SZTAKI

A closure study on aerosol extinction in urban air in Hungary

Molnår, Ágnes

PĂĄrkĂĄnyi, DĂŠnes

Imre, KornĂŠlia

GĂĄcser, Vera

CzĂĄgler, Edit

OrszĂĄgos MeteorolĂłgiai SzolgĂĄlat

2016-06

QE Geology / fĂśldtudomĂĄnyok

In this study, we present our results from an investigation into the use of
visibility data as a viable tool for the survey of long-term variations in air quality. We
found that visibility data in general can be used to estimate atmospheric aerosol extinction
coefficients, and that PM10 can be successfully estimated from aerosol chemical
composition. Our results indicate that PM10 concentrations provide a good basis for the
reconstruction of aerosol extinction coefficients. It was also shown that both derived
(from visibility) and reconstructed aerosol extinction coefficients were in good
accordance with each other, mainly in the case of dry aerosols. Ambient values can be
determined if an adequate hygroscopic growth rate for aerosol extinction is considered.
We also found that a rather precise estimation of extinction coefficient can be reached if a
modified version of the widely used IMPROVE formula is applied.

magyar

Article

PeerReviewed

info:eu-repo/semantics/article

text

http://real.mtak.hu/39913/1/MA_PD_IK%2B_closure_study_aeros...

Molnår, Ágnes and Pårkånyi, DÊnes and Imre, KornÊlia and Gåcser, Vera and Czågler, Edit (2016) A closure study on aerosol extinction in urban air in Hungary. IDŐJÁRÁS / QUARTERLY JOURNAL OF THE HUNGARIAN METEOROLOGICAL SERVICE, 120 (2). pp. 163-181. ISSN 0324-6329

http://real.mtak.hu/39913/