An extensive data set for in situ microphysical characterization of low-level clouds in a Finnish sub-Arctic site

[摘要] Continuous, semi-long-term, ground-based in situ cloudmeasurements were conducted during eight Pallas Cloud Experiments (PaCEs)held in autumn between 2004 and 2019. Those campaigns were carried out inthe Finnish sub-Arctic region at the Sammaltunturi station(67 ∘ 58 ′ 24 ′′  N,24 ∘ 06 ′ 58 ′′  E;560 m a.m.s.l.), the part of the Pallas Atmosphere–Ecosystem Supersite and GlobalAtmosphere Watch (GAW) program. Two cloud spectrometer ground setups and aweather station were installed on the roof of the station to measure in situcloud properties and several meteorological variables. Thus, the obtaineddata sets include the size distribution of cloud droplets as a measured cloudparameter along with the air temperature, dew point temperature, humidity,pressure, horizontal wind speed and direction, (global solar) sun radiation,and visibility at the station. Additionally, the number concentration,effective diameter, median volume diameter, and liquid water content fromeach instrument were derived. The presented data sets provide a insight intomicrophysics of low-level clouds in sub-Arctic conditions over a wide rangeof temperatures ( −25.8 to 8.8  ∘ C). The data are available in the Finnish MeteorologicalInstitute (FMI)open data repository for each campaign and each cloud spectrometer groundsetup individually: https://doi.org/10.23728/FMI-B2SHARE.988739D21B824C709084E88ED6C6D54B (Doulgeris et al., 2021).

[学科分类] 眼科学