Table 2. Description of cloud condensation nuclei data acquisition for each site including the instrument type, operation mode, applied supersaturations, acquisition and data processing software and references from the literature.

Protocol Name	Site	CCNC type	Operation mode	Super-saturation (%)	Flow rate (l min-1)	Acquisition Software	Data processing package	references
P_CCNC_BRW	Barrow (BRW)	CCN-100	polydisperse	0.20, 0.30, 0.50, 0.60, 1.00, 1.20, 1.45	0.5	standard Labview program by Droplet Measurement Technologies	Custom code	link
P_CCNC_CES	Cabauw (CES)	CCN-100	polydisperse	0.10, 0.20, 0.30, 0.50, 1.00	0.5	standard Labview program by Droplet Measurement Technologies	Custom Matlab script by ECN Environmental Assessment	8
P_CCNC_FIK	Finokalia (FIK)	CCN-100	polydisperse	0.20, 0.40, 0.60, 0.80, 1.00	0.5	standard Labview program by Droplet Measurement Technologies	Data processing Procedures within the Igor Pro 6.37 version	43
P_CCNC_JFJ	Jungfrau-joch (JFJ)	CCN-100	polydisperse	0.10, 0.15, 0.20, 0.25, 0.30, 0.35, 0.40, 0.50, 0.70, 1.00	1.0; 0.75	standard Labview program by Droplet Measurement Technologies	PSI CCNC Toolkit	11,87
P_CCNC_MEL	Melpitz (MEL)	CCN-100	monodisperse (DMA: Hauke medium TROPOS-built, CPC: TSI Model 3010)20–440 nm	0.10, 0.20, 0.30, 0.50, 0.70	0.5	TROPOS CCNC Labview program for monodisperse CCNC measurements	TROPOS CCNC software	46
P_CCNC_MHD	Mace Head (MHD)	CCN-100	polydisperse	0.10, 0.25, 0.35, 0.50, 0.75, 1.00	0.5	standard Labview program by Droplet Measurement Technologies	custom Matlab code	8
P_CCNC_NOT	Noto Peninsula (NOT)	CCN-100	monodisperse (DMA: TSI Model 3081L, CPC: TSI Model 3776)8–342 nm	0.10, 0.20, 0.50, 0.80	0.5	TSI Aerosol Instrument Manager and standard Labview program by Droplet Measurement Technologies	Scanning Mobility CCN Analysis Tool (http://nenes.eas.gatech.edu/Experiments/SMCA.html)	29
P_CCNC_PUY	Puy de Dome (PUY)	Mini-CCNC	monodisperse (TSI type DMA 44 cm, TSI CPC 3010)	0.2	0.1 with bypass flow of 0.4	LaMP custom code	LaMP custom code
P_CCNC_SEO	Seoul (SEO)	CCN-100	polydisperse	0.20, 0.40, 0.60, 0.80	0.5	standard Labview program by Droplet Measurement Technologies	University of Seoul mysql and perl code
P_CCNC_SMR	Hyytiälä (SMR)	CCN-100	polydisperse	0.10, 0.20, 0.30, 0.50, 1.00		standard Labview program by Droplet Measurement Technologies	University of Helsinki Matlab code	8
P_CCNC_VAV	Vavihill (VAV)	CCN-100	polydisperse	0.10, 0.15, 0.20, 0.25, 0.30, 0.35, 0.40, 0.50, 0.70, 1.00, 1.40		standard Labview program by Droplet Measurement Technologies	Lund University custom code