Multiangle Absorption Photometer (MAAP) data measured through total (tot) and interstitial (int) inlets at Puijo SMEAR IV station in Kuopio, Finland. Data for years 2006-2014. See detailed description: https://avaa.tdata.fi/web/smart/smear-iv. Data contains files for both inlets (tot and int): * PUI_maap_int_2006_data.csv * PUI_maap_int_2007_data.csv * PUI_maap_int_2008_data.csv * PUI_maap_int_2009_data.csv * PUI_maap_int_2010_data.csv * PUI_maap_int_2011_data.csv * PUI_maap_int_2012_data.csv * PUI_maap_int_2013_data.csv * PUI_maap_int_2014_data.csv * PUI_maap_tot_2010_data.csv * PUI_maap_tot_2011_data.csv * PUI_maap_tot_2012_data.csv * PUI_maap_tot_2013_data.csv * PUI_maap_tot_2014_data.csv The files have the following columns (column_name: description; [unit]): * Year, Month, Day, Hour, Minute, Second: Sample time (UTC +2), [] * quality: Quality parameter; [] * sigma_ap: Aerosol absorption coefficient 637nm (1/Mm); [1/Mm] * conc_bc: Black carbon (BC) concentration in ng/m3; [ng/m3] * load_filter: Filter loading (not to be used); [] * flowrate: Sample flow in liters/hourly; [l/h] Interstitial (int) and total (tot) inlets: Sample air for the instruments is drawn through two parallel sampling lines: interstitial (int) and total (tot) inlets: * interstitial inlet (int) is equipped with an impactor with a 10-µm cut-off size followed by a cyclone with a 1.0-µm cut-off size (2.5 µm before 20 November 2009) * total air inlet (total) with heated sampling lines and snow-hood to dry the cloud droplets (cut-off size 40 µm when the wind speed is below 20 m/s) This two-inlet setup enables simultaneous interstitial and total air (interstitial + cloud drop residual) measurements when the tower is covered by clouds. The size of data: ca. 20 MB. Note: Data also available and described via AVAA SmartSMEAR: * http://urn.fi/urn:nbn:fi:csc-kata20170628150112244826 * http://urn.fi/urn:nbn:fi:csc-kata20170628144354843319

2019