Hyytiälä is a historical forestry station in Finland, operated by the University of Helsinki. Hyytiälä hosts the Station for Measuring Ecosystem–Atmosphere Relations II (SMEAR II) one of the world’s most comprehensive surface in situ observation sites in a boreal forest environment. The instrumentation covers aerosol dynamics, atmospheric chemistry, micrometeorology, weather monitoring, cloud remote sensing and ecophysiology of trees growing in the urban environment. The cloud remote observations in Hyytiälä have started in 2012. These observations were carried out on campaing basis. In 2014 the second ARM Mobile Facility (AMF2) was deployed to Hyytiälä, as a part of Biogenic Aerosols—Effects on Clouds and Climate experiment (Petäjä et al., 2016). Since then, continuouis observations of cloud and precipitation are carried out at the site.
The cloud profiling site is located on the lake Kuivajärvi shore (LON: 24.29, LAT: 61.84, altitude 150 m). It is about 30 m below the base of the SMEAR II mast, where most aerosol measurments are performed.
Petäjä, T., E. O’Connor, D. Moisseev et al., 2016: BAECC: A Field Campaign to Elucidate the Impact of Biogenic Aerosols on Clouds and Climate. Bull. Amer. Meteor. Soc., 97, 1909–1928, doi: 10.1175/BAMS-D-14-00199.1.
Pettersen, C.; Bliven, L.F.; von Lerber, A.; Wood, N.B.; Kulie, M.S.; Mateling, M.E.; Moisseev, D.N.; Munchak, S.J., Petersen, W.A.; Wolff, D.B., 2020: The Precipitation Imaging Package: Assessment of Microphysical and Bulk Characteristics of Snow. Atmosphere, 11, 785. https://doi.org/10.3390/atmos11080785
von Lerber, A., D. Moisseev, L.F. Bliven, W. Petersen, A. Harri, and V. Chandrasekar, 2017: Microphysical Properties of Snow and Their Link to Ze–S Relations during BAECC 2014. J. Appl. Meteor. Climatol., 56, 1561–1582, https://doi.org/10.1175/JAMC-D-16-0379.1
