1040 14 4906 3 25572 document 4906 Dataset_PMF European COVID–19 lockdowns PSD analysis_F_Matrices.csv text/plain 7ad424e61f4b2f3125329dcd826ca9cc MD5 40355 2023-12-14 08:30:51 http://edata.bham.ac.uk/1040/1/Dataset_PMF%20European%20COVID%E2%80%9319%20lockdowns%20PSD%20analysis_F_Matrices.csv 1040 1 2 text/plain text public cc_by_4

Dataset_PMF European COVID–19 lockdowns PSD analysis_F_Matrices.csv

data 4907 3 25574 document 4907 Dataset_PMF European COVID–19 lockdowns PSD analysis_G_Matrices.csv text/plain c0ddc1572d8dc21b2b2ab5f3a70405b5 MD5 5363358 2023-12-14 08:30:57 http://edata.bham.ac.uk/1040/2/Dataset_PMF%20European%20COVID%E2%80%9319%20lockdowns%20PSD%20analysis_G_Matrices.csv 1040 2 1 text/plain text public cc_by_4

Dataset_PMF European COVID–19 lockdowns PSD analysis_G_Matrices.csv

data archive 84 disk0/00/00/10/40 2023-12-14 16:42:47 2023-12-14 17:31:54 2023-12-14 16:42:47 data_collection show Harrison Roy M. r.m.harrison@bham.ac.uk 0000-0002-2684-5226 Rowell Alex a.rowell@bham.ac.uk 0000-0001-6547-247X Brean James J.Brean@bham.ac.uk 0000-0001-5430-6994 10col_life COVID–19 lockdown positive matrix factorisation ultrafine particle size distribution source apportionment Positive Matrix Factorisation (PMF) is a mathematical technique commonly used for source apportionment of air pollutants. Here, we applied PMF to particle size distribution (PSD) data from six monitoring sites across Europe to better understand how particle number concentrations and their sources (referred to as factors) changed during the respective 2020 lockdown periods compared to the reference years 2014–2019, depending on data coverage. The G matrix represents the factor contributions and the F matrix represents the factor profiles. “G_Matrices.csv” contains the G matrices from individual PMF runs for each site. “Factor” is the number assigned by PMF. “FactorName” is the manually assigned name to each factor for each site”. “Country” and “Type” collectively denote each site. “date” gives the time in local time for each site in YYYY-MM-DD HH:MM:SS format. “G_val” is the G Matrix values. “F_Matrices.csv” contains the F matrices from individual PMF runs for each site. “Factor” is the number assigned by PMF. “FactorName” is the manually assigned name to each factor for each site”. “Country” and “Type” collectively denote each site. “Diameter” refers to each mobility particle size spectrometer (MPSS) size bin. “dNdlogdp” is the F Matrix values. 2023-12-14 published University of Birmingham https://doi.org/10.25500/edata.bham.00001040 Dataset research-data@contacts.bham.ac.uk School of Geography, Earth and Environmental Sciences nerc R8/H12/83/011 and NE/V001523/1 Hungarian Research, Development and Innovation Office/ K132254) University of Helsinki through ACTRIS–HY and ACCC/ 337549) European Commission, RI–URBANS project/ No 101036245) Urbaani Ilmanlaatu 2.0 via Technology Industries of Finland Centennial Foundation Research Council of Finland ACCC/ 337549 yes yes yes TRUE PI Harrison Roy R.M.HARRISON@bham.ac.uk