San Pietro Capofiume

The CMN-PV facility at S. Pietro Capofiume (50 km from Bologna) is located at the meteorological station "Giorgio Fea" which is owned by ARPAE Emilia-Romagna (43°21'N, 12°34'E, 11 m asl). The measurement site, part of the ACTRS-Italy neywork, is classified as rural background.

It is equipped with in-situ near-surface monitoring of  SO2, particulate matter sampling for atmospheric chemical speciation, speciation in continuous of non-refractory chemical species (by Aerosol Mass Specrometer, AMS) and measurements of number concentration ( by twin - DMPS in collaboration with the University of Kuopio). A MAX-DOAS system (SkySpec-2D-210) is available at the station for measurement of trace gases (NO2, SO2, HCHO, HONO, Glyoxal, BrO, IO, Ozone). Further observations will be implemented during 2022: the characterization of physico-chemical-optical properties of both columnar aerosol population (sun photometry and lidar) and at ground (aerosol scattering and absorption measurements), together with an accurate evaluation the radiative balance and albedo description (solar tracker equipped with radiometers for solar and thermal down-welling radiation).

ARPAE Emilia-Romagna runs "near-surface" measurements of nitrogen oxides, ozone, ammonia, PM10 and PM2.5 as well as meteo-radar measurements, radio-soundings (at 00:00 and 12:00 UTC), PM2.5 chemical composition (offline) and operates a phenological station.

The facility is hosted in an air-conditioned shelter (15 m2) equipped with fast internet connection which allows for real-time data delivery and remote control of instrumentations. Two sampling systems (ACTRIS-compliant) designed for trace gases and aerosol particles (respectively) are available at the station. Both the sampling systems are characterized by monitoring of T and RH with active control of air fluxes. Multiple inlets to the sampling systems are available for the external users (diameters: 1/4" for trace gases and 1/4", 1/2" and 3/4" for aerosol). Three quartz windows (one on the roof, two on the walls) are available for vertical and horizontal remote sensing observations. Support structures to research activities are available at the field station: a chemistry laboratory, wi-fi covering the entire area, distribution of electric current through specific towers in different locations of the field, a 10-m two-storey tower.


List of measurements






Aerosol and weather Black carbon concentration Multi-Angle Absorption Photometer  Implementation (2022)  
Aerosol size-distribution (range: 10 - 500 nm) TSI SMPS (owned and operated by Uni. East Finland) Operative  
Aerosol size-distribution (range: 0.25 - 30 µm) GRIMM EDM-164 Operative  
Fog liquid water content (on months: NDJFM) Gerber PVM-100 Operative  
Solar radiation (LW-SW downwelling) Radiometers with solar tracker Implementation (2022) Operated in collaboration with ISP
Aerosol light scattering and backscattering coefficient (450, 525 and 635 nm) TBD Implementation (2022)  
Particulate matter concentrations (PM1, PM2.5, PM10)   Operative Owned and operated by ARPAE - Emilia Romagna
Aerosol chemical composition Offline chemical determinations on PM10 filter samples Operative Owned and operated by ARPAE - Emilia Romagna
Vertical profiling of aerosol physico-optical parameters Lidar system (Elastic: 532 and 355nm, Raman: 387nm and 607nm, Depolarization: 532nm) Implementation (2022)  
Columnar aerosol essential physico-optical parameters Sun Sky Lunar Photometer Implementation (2022)  
Submicron aerosol chemical composition ACSM Operative Split time between Bologna and San Pietro Capofiume
Vertical profiling of meteorological variables Radiosoundings Operative Owned and operated by ARPAE Emilia-Romagna at 00 and 12 UTC
Precipitation rate Radar meteo Operative Owned and operated by ARPAE Emilia-Romagna
In-situ meteorological variables   Operative Owned and operated by ARPAE Emilia-Romagna
Trace gases SO2 Thermo 43i Operative  
Column concentrations and vertical distribution of trace gases (NO2, SO2, HCHO, HONO, Glyoxal, BrO, IO, Ozone) DOAS (SkySpec-2D-210) Operative  
Anthropogenic VOCs, SF6, F-gases Agilent 6850–5975 GC–MS equipped with the UNITY2-Air Server2 auto-sampling/pre-concentration device (TBD) Implementation (2023)  
NO, NO2, O3   Operative Owned and operated by ARPAE Emilia-Romagna