de.hamburg.icdc/amd.de.fval/uhh.wxt00.l2.hail SAMD v2.2 en FESST fval_uhh_wxt00_l2_hail Meteorological network observations by APOLLO and WXT weather stations during FESSTVaL 2021 DOI:10.25592/uhhfdm.9765 Kirsch, Bastian (1); Hohenegger, Cathy (2); Klocke, Daniel (2); Ament, Felix (1) (1) Meteorologisches Institut, Universität Hamburg; (2) Max-Planck-Institut für Meteorologie, Hamburg CF-1.7 where applicable external NETCDF4 de 1.1 daily 2 This data is subject to the FESSTVaL data policy to be found at https://doi.org/10.25592/uhhfdm.9890 and in the SAMD Observation Data Product Standard https://doi.org/10.25592/uhhfdm.9902 . none Meteorological Institute, University of Hamburg Felix Ament +49 40 42838 0 felix.ament (at) uni-hamburg.de 2021-05-17 2021-08-27 10 100-4800 none Circular area of about 30 km in diameter centered around the  Meteorological Observatory Lindenberg (eastern Germany; latitude 52.16°N, longitude 14.12°E) This data set contains meteorological network observations collected during the Field Experiment on Sub-mesoscale Spatio-Temporal Variability in Lindenberg (FESSTVaL) from May to August 2021. The observational set up consisted of a ground-based network of 99 autonomous measurement stations that covered an circular area of 30 km in diameter centered around the Meteorological Observatory Lindenberg (eastern Germany; 52.16°N, 14.12°E). The primary goal of the network measurements was to observe the spatial structure of convective cold pools at sub-mesoscale resolution (100 m - 10 km). During the experiment, 82 low-cost and custom-designed APOLLO (Autonomous cold POoL LOgger) stations sampled air temperature and pressure at 1-s resolution, while 21 WXT weather stations based on commercial sensors provided additional information on relative humidity, wind speed and precipitation at 10-s resolution. The data of all network stations is stored in daily files separated after station type and measurement variable. Absolute accuracy of temperature (pressure) generally better than +/- 0.5 K (1 hPa), however, the instrument design focused on the relative accuracy of measurements. The overall data availability of temperature measurements for APOLLO (WXT) stations is 92.0 % (98.1 %). Maintenance logbook and site picutures are attached for further interpretation of measurements. 19x WXT weather station 52.04486 - 52.28156 13.90631 - 14.33995 42 - 98 3 Instruments altitude: Circular area of about 30 km in diameter centered around the  Meteorological Observatory Lindenberg (eastern Germany; latitude 52.16°N, longitude 14.12°E) Horizontal resolution: Between 0.1 km and 4.8 km (nearest-neighbor distance between stations) Short term observations FESST Variable groups Atmospheric state 8640 2 19 40 time time time seconds since 1970-01-01 00:00:00 UTC time_bnds time, nv start and end of time averaging intervals none station_id station, character station identifier code none station_name station, character station name none lat station latitude latitude of instrument location degrees_north lon station longitude longitude of instrument location degrees_east zsl station altitude altitude of instrument location above mean sea level m zag station height height of sensor above ground m lcz station, character local climate zone of station hail time, station number of hail hits m-2