The automated nivological station was installed in November 2020 in a flat area over the tundra about 80 meters far from the Gruvebadet Atmospheric Laboratory and nearby a snow sampling site from where weekly snow samples are collected for chemical analysis. Sensors (NESA LU06) have been calibrated by their companies before installation and are connected to a datalogger for continuous acquisition. For all the parameters, data are logged with 10-minute time resolution and then averaged over 1 hour. This activity is carried out by the Aldo Pontremoli Centre part of the Joint Research Agreement ENI-CNR, in the framework of the SnowCorD project (SIOS Core Data).

Atmospheric Gondola for Aerosol Profiles (AGAP) The scientific goals of AGAP are to develop novel aerosol payloads and evaluate the vertical distribution of aerosol properties in the Arctic Boundary Layer. Dataset consists in Aerosol vertical profiles gridded at a 50 m spatial resolution: R, T, P, RH, Aerosol size distribution, BC concentration, O3. Maximum altitudes 1500 m.

Snow sampling every year at the Kongsvegen glacier, in Svalbard

Arctic Metrology (MeteoMet - Arcitc) Project start:2017-03-01 end: 2022-02-01 Field calibration of thermometers for air, soil, permafrost and water temperature measurements using special transportable chamber and dedicated calibration procedures. Evaluation of field measurement uncertainty. Calibration of different kind of instruments and sensors. Dedicated calibration procedures. Documented traceability to SI standards. Field measurement uncertainty evaluations.

Mixing state and organic volume fractions of sub micron aerosol particles collected at the Zeppelin observatory

Freshwater input in the Kongsfjorden (FIKO) Project Start: 2010-06-01 End:2020-12-31 FIKO project aims to acquire measurements of the chemical and physical characteristics of water masses in Kongsfjorden, and estimate the amount of fresh water released from glaciers, in order to study the interactions of this water with the warmer Atlantic waters. The dataset consist of water column profiles of pressure, temperature, salinity, fluorescence and turbidity located within the Kongsfjorden at Platform: MS Teisten - Kings Bay AS, vertical resolution 0.5 m Kongsfjorden_CTD_profiles_2013: 48 water column profiles by SBE19plus CTD probe Kongsfjorden_CTD_profiles_2014: 42 water column profiles by SBE19plus CTD probe Kongsfjorden_CTD_profiles_2015: 82 water column profiles by SBE19plus CTD probe Kongsfjorden_CTD_profiles_2016: 34 water column profiles by SBE19plus CTD probe Kongsfjorden_CTD_profiles_2017: 5 water column profiles by SAIV A/S SD204 – CTD/STD Kongsfjorden_CTD_profiles_2018: 41 water column profiles by SAIV A/S SD204 – CTD/STD Kongsfjorden_CTD_profiles_2019: 12 water column profiles by SAIV A/S SD204 – CTD/STD Kongsfjorden_Krossfjorden_CTD_profiles_2020: 29 water column profiles by SBE19plus CTD probe in 3 different areas: Krossfjorden, kongsfjorden at one transect along the fjord axis, off Bayelva river area.

Data collected by the WINTER-CZ Monitoring Station. The CO2 and the temperature is sampled is measured inside the soil, the snowpack (when the station is covered by the snow) and the atmosphere. Other variables are collected as well: the humidity and the oxygen content of the soil, the snowpack height, the humidity and the temperature of the air, the wind speed and direction.

Snow water equivalent at the Gruvebadet Snow Resarch Site

The Climate Change Tower Integrated Project (CCT-IP) represents the guide lines of the italian research in the arctic and aims to study the interaction between all the components of the climate system in the Arctic. The Amundsen-Nobile Climate Change Tower (CCT) is the key infrastructure of the project, and provides continuous acquisition of the atmospheric parameters at different heights as well as at the interface between the surface and the atmosphere. Precipitation data (liquid and solid) are obtained from an optical disdrometer (Vaisala FD70). Partly funded by Arctic PASSION project (agreement number 101003472). Data are available under request.

Ultraviolet Irradiance Variability in the Arctic U-VIVA Dataset contains results of the observed at 4 Svalbard stations ozone depletion episode that took place in the spring 2020 and its effect on the ultraviolet solar radiation reaching the ground. The ozone column was registered by Brewer #050 spectroradiometer, GUV and UV-RAD filter radiometers all operating in Ny-Ålesund, and by M-124 ozonometer working in Barentsburg. The solar radiation in UV-B, UV-A and erythemal UVE spectral bands that are impacted by the ozone column was measured by GUV and UV-RAD radiometers at Ny-Ålesund and, by UVS-E-T and UVS-AE-T Kipp & Zonen radiometers operating in Longyearbyen and Hornsund, respectively. An analysis of the data is presented in the 2021 SESS report published by Svalbard Integrated Arctic Earth Observing System (SIOS).