10-meter (m) meteorological flux tower measurements (Level 1 Raw), Multidisciplinary Drifting Observatory for the Study of Arctic Climate (MOSAiC), central Arctic, October 2019 - September 2020

Raw (Level 1) measurements from the 10-meter (m) meteorological and flux tower (TOWER) deployed at the Met City location within the Central Observatory of the Multidisciplinary drifting Observatory for the Study of Arctic Climate (MOSAiC) expedition drifting with the central Arctic sea ice from October 2019 through September 2020. At times, measurements from a second meteorological mast (MAST) located nearby are also included in the data set. The collective TOWER systems measured many parameters of the surface energy budget, surface momentum flux, near-surface meteorology, and local position. Measurements of meteorology and high-resolution 3-dimensional winds were observed at nominal heights of 2-, 6-, and 10-m, with some measurements at either 30- or 23-m when the MAST was also operational. The measurements are included in two netCDF files per day. The "slow" files are for 1-sec samples of the measured variables, including near-surface meteorology, surface temperature, surface height change, net surface heat flux, and position. The "fast" files are for data at 10 and 20-Hertz (Hz) resolution including 3-dimensional wind, temperature, and gas concentrations of water vapor and carbon dioxide. These data are raw measurements with only technical corrections applied but no quality assurance. Moreover, the data files contain all measurements, including data collected during system testing that are not intended for scientific use. A detailed documentation of the measurement conditions will be provided in a forthcoming data publication. For scientific purposes, we recommend using Level 3 data files when they are available, as these will include full quality control as well as higher-order derived products.