This service consists of conducting experiments and performing comprehensive analysis of both optical and microphysical aerosol properties, provided by manual or automated data analysis with the use of certified ACTRIS tools, and tools developed at WOS Facility assuring the highest levels of data products.         The WOS facility offers expert knowledge on the atmospheric aerosol optical properties of different aerosol types (e.g. biomass burning aerosol, mineral dust), especially transported over long distances. We offer to perform experiments and analyses with a use of a wide range of measurement techniques and data analysis approaches. For interpretation of the obtained results WOS facility team applies different transport models (HYSPLIT, FLEXPART) and aerosol prediction models (NAAPS, Barcelona Dust Forecast Center), as well as the MODIS imagining to spot the wildfires. WOS facility researchers/technicians have deep, documented with the research projects, experience in biomass burning aerosol studies including analysis of the fresh and aged BBA in the fine temporal and spatial resolution as well as their impact on the Earth radiative transfer. The interface PROfiler developed at WOS allows for efficient and insightful comparative studies of the aerosol layers. The microphysical parameters in BBA layers are being successfully retrieved with the mathematical inversion methods. The remote sensing of the BBA at WOS is supported by in-situ measurements of black carbon and photometer/spectrometer measurements in column of the atmosphere. In case of mineral dust retrievals we offer additional data products such as the mineral dust separation including the apportionment of fine and coarse mode of aerosol (POLIPHON). For distinguishing between agricultural dust and pollen contribution in the boundary layer in-situ pollen detection is being applied. Thanks to inversion of lidar/photometer data WOS can provide the particle size distribution of mineral dust particles. Expertise and algorithms for aerosol cloud interactions might be provided thanks to the synergy of different aerosol and cloud remote sensing instrumentation.

TIME CONSTRAINTS: The remote and physical access of the external users at the WOS facility must be discussed and planned with the PI of WOS and the TNA coordinators. External users are allowed to access WOS observatory only under WOS personnel supervision, prior to their registration in the Visitor System. The user must go via HPS training prior to accessing the WOS facility.