Regional New Particle Formation over the Eastern Mediterranean and Middle East
Open Access
- 24 December 2020
- journal article
- research article
- Published by MDPI AG in Atmosphere
- Vol. 12 (1), 13
- https://doi.org/10.3390/atmos12010013
Abstract
Atmospheric new particle formation (NPF) events taking place over large distances between locations, featuring similar characteristics, have been the focus of studies during the last decade. The exact mechanism which triggers NPF still remains indefinable, so are the circumstances under which simultaneous occurrence of such events take place in different environments, let alone in environments which are parted by over 1200 km. In this study, concurrent number size distribution measurements were conducted in the urban environments of Athens (Greece) and Amman (Jordan) as well as the regional background site of Finokalia, Crete, all located within a distance of almost 1300 km for a 6-month period (February–July 2017). During the study period Athens and Finokalia had similar occurrence of NPF (around 20%), while the occurrence in Amman was double. When focusing on the dynamic characteristics at each site, it occurs that formation and growth rates at Amman are similar to those at Finokalia, while lower values in Athens can be ascribed to a higher pre-existing particle number at this urban site. By comparing common NPF events there are 5 concomitant days between all three sites, highly related to air masses origin. Additionally, for another 19 days NPF takes place simultaneously between Finokalia and Amman, which also share common meteorological characteristics, adding to a total of 60% out of 41 NPF events observed at Finokalia, also simultaneously occurring in Amman.Keywords
Funding Information
- European Regional Development Fund (MIS 5021516)
This publication has 54 references indexed in Scilit:
- Aerosol particle measurements at three stationary sites in the megacity of Paris during summer 2009: meteorology and air mass origin dominate aerosol particle composition and size distributionAtmospheric Chemistry and Physics, 2013
- Mineral dust photochemistry induces nucleation events in the presence of SO2Proceedings of the National Academy of Sciences of the United States of America, 2012
- Measurement of the nucleation of atmospheric aerosol particlesNature Protocols, 2012
- Number size distributions and seasonality of submicron particles in Europe 2008–2009Atmospheric Chemistry and Physics, 2011
- Monitoring of sources and atmospheric processes controlling air quality in an urban Mediterranean environmentAtmospheric Environment, 2010
- Time span and spatial scale of regional new particle formation events over Finland and Southern SwedenAtmospheric Chemistry and Physics, 2009
- Observation of regional new particle formation in the urban atmosphereTellus B: Chemical and Physical Meteorology, 2008
- Measurements in a highly polluted Asian mega city: observations of aerosol number size distribution, modal parameters and nucleation eventsAtmospheric Chemistry and Physics, 2005
- Global Air Pollution Crossroads over the MediterraneanScience, 2002
- Seasonal variation of dimethylsulfide in the gas phase and of methanesulfonate and non-sea-salt sulfate in the aerosols phase in the Eastern Mediterranean atmosphereAtmospheric Environment, 2002