[{"name":"cremer-2020-size-resolved-1","title":"Size-resolved absorption coefficient of ambient aerosol at Stockholm University, January to February 2019","summary":"The data describe the absorption coefficient of ambient aerosol at Stockholm University over a size range. Therefore a Multi-Angle Absorption Photometer (MAAP) and two Particle Soot\/Absorption Photometers (PSAP) were set up in combination with a Differential Mobility Particle Sizer (DMPS) to measure light absorption on a size resolved grid.\r\n\r\nThe goal was to see in which particle sizes the most absorbing particles are present and to get a particle size distribution for ambient air and absorbing aerosols. Therefore PSAP #2 was built up behind the DMPS to get the light absorption coefficient in the according size bin. The DMPS selects a particle size range and counts the particles, after that the PSAP #2 measures the absorption of the outgoing flow. The MAAP and PSAP #1 was used as a control background measurement to know how much light the ambient air absorbs over all sizes and to compare with each other for data quality purposes.\r\n\r\nThe data were collected at Stockholm University, Stockholm, Sweden, from 2019-01-11 15:09 until 2019-02-25 07:50. All absorption coefficients were corrected according to established procedures.","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":"During the measurement period a fire event happened in T\u00e4by, approx. 5 km north of Stockholm University. The wind transported the plume directly to our measurements: 2019-01-24 23:54 (start of the fire) until the following early morning hours 2019-01-25 08:50.","category":"Atmosphere","subcategory":"Aerosols","keywords":"Black carbon; Soot; MAAP; PSAP; DMPS; BC; Absorption; Absorption coefficient","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 > Aerosol particle properties","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).Project funder is the Swedish Research Council (contract 2017-03758).","publisher":"Bolin Centre Database","version":"1","constrains":"","access":"Free"}]