[{"name":"cremer-2020-urban-background-1","title":"Absorption coefficient for urban background air, Stockholm, December 2018","summary":"The dataset includes three parallel absorption coefficient measurements by two different types of instruments: one Multi-Angle Absorption Photometer (MAAP) and two Particle Soot\/Absorption Photometers (PSAP) to evaluate the performance and comparability.\r\n\r\nThe instruments were set up next to each other in the lab at Stockholm University and measured the same sample flow of ambient air through the same inlet for 7 days in wintertime. The location is considered urban background. The data can be used to get a measure of black carbon concentration in the air.\r\n\r\nThe data were collected at Stockholm University, Stockholm, Sweden from 2018-12-14 12:00 until 2018-12-21 13:40. All data were corrected according to established procedures and the minute values were averaged to 10-minute time stamps. An influence from a nearby highway with rush hours can be seen in addition to a diurnal trend.","citations":"Tunved P, Cremer RS, Zieger P, Str\u00f6m J (2021) Using correlations between observed equivalent black carbon and aerosol size distribution to derive size resolved BC mass concentration: a method applied on long-term observations performed at Zeppelin station, Ny-\u00c5lesund, Svalbard, Tellus B: Chemical and Physical Meteorology 73:1, 1-17. DOI:10.1080\/16000889.2021.1933775\n\nBond TC, Anderson TL, Campbell D (1999) Calibration and intercomparison of filter-based measurements of visible light absorption by aerosols. Aerosol Science and Technology, 30, 582\u2060\u200a\u2013\u200a\u2060600. doi:10.1080\/027868299304435","comments":"The data show a peak in the middle of the night (2018-12-17). The cause for this could not be determined in detail but one assumption is the snow cleaning machine that cleaned the roads around the buildings and the aerosol inlet during this time of the year.","category":"Atmosphere","subcategory":"Aerosols","keywords":"Black carbon; Soot; MAAP; PSAP; BC; Absorption; Absorption coefficient; Urban background; Anthropogenic aerosol; Combustion; Traffic","scientist":"Roxana Cremer, Paul Zieger, Johan Str\u00f6m","firstname":"Roxana","lastname":"Cremer","address":"Department of Environmental Science, Atmospheric Science; Stockholm University\r\n","postalcode":"SE-106 91","city":"Stockholm","province":"","country":"Sweden","parameters":"Earth science > Atmosphere > Aerosols","location":"Continent > Europe > Northern Europe > Scandinavia > Sweden","progress":"Completed","language":"English","project":"The project aims at studying sources and sinks of Black carbon particles on the basis of the size distribution with assistance of laboratory studies, field observations and numerical models, i.e. backwards trajectory calculations. Project funder is the Swedish Research Council (contract 2017-03758).","publisher":"Bolin Centre Database","version":"1","constrains":"","access":"Free"}]