Seefeld Cold-Air Pool Experiment (SEECAP): Meteorological Measurement Data

The Seefeld Cold-Air Pool Experiment (SEECAP) focused on the cross-country skiing area Olympiaregion Seefeld and in particular the topographic setting in the Nordic ski arena which favors the formation of cold-air pools and took place between December 2019 and March 2020. Six automatic weather stations and 41 unventilated temperature sensors were distributed within the valley to gain insight into the spatial structure of the cold-air pool in Seefeld. The study site as well as locations and instrumentation of each station are described in Rudolph (2022) and Rauchöcker et al. (2024d). This upload contains meteorological measurement data associated with SEECAP. WRF simulations were performed for two nights, representing an ideal evolution of the cold-air pool (January 12 and January 13 2020) and a disrupted evolution (January 16 and January 17 2020), respectively. The output data of simulations with snow cover for the night between January 16 and January 17 2020 are published in Rauchöcker et al. (2024a) and in Rauchöcker et al. (2024c) for the night between January 12 and January 13 2020. Simulation output without snow cover is available for the night between January 16 and January 17 2020  in Rauchöcker et al. (2024b).Automatic Weather StationsMeasurement data of the six automatic weather stations can be found in momaa.zip. The folder includes one file for each station (MOMAA02.dat, MOMAA03.dat, MOMAA04.dat, MOMAA07.dat, MOMAA08.dat and MOMAA10.dat). These stations measured temperature, pressure, humidity, net radiation, wind speed and wind direction at 1-min intervals. A figure showing the location of the different stations is included as well (Stations.pdf); the station names of the automatic weather stations are abreviated in the legend of that figure (e.g. M04 instead of MOMAA04). Incoming and outgoing longwave and shortwave radiation, latent heat flux and sensible heat flux were measured at MOMAA04 and MOMAA08. The radiation data can be found in MOMAA04_rad.dat and MOMAA08_rad.dat and eddy covariance data in MOMAA04_turb.csv and MOMAA08_turb.csv, respectively.Temperature SensorsData from the unventilated temperature sensors can be found in hobos.zip, which contains a file for each sensor and the file names refer to the naming convention in Stations.pdf. Most sensors were located along the valley floor and along a ski jump on its southeastern slope. At nine locations, temperature sensors were mounted at two heights (1 m and 2 m above the ground). File names reflect that height by adding _1m or _2m to the file name (e.g. A_1m.txt and  A_2m.txt). Locations that had only one sensor were named according to the station name (e.g. M.txt). The remaining sensors were used for vertical profiles at 3 different levels of a walk-up tower (TOWER_2m.txt, TOWER_2ndfloor.txt and TOWER_top.txt) and at a bridge (VP; labeled from VP_050.txt at 0.5m above the ground to VP_630.txt at 6.3m). A pseudo-vertical profile for the sensors along the slope of the valley, at the walk-up tower down to the lowest station in the upper basin (top to bottom, M03, S4, S3, S2, S1, M10, G, H, M04) can be found in PseudoProfile_basin.mat.