In situ temperature, relative humidity and wind profiles from 2006 to March 2020 from the GRUAN reference network

The Global Climate Observing System (GCOS) Reference Upper-Air Network (GRUAN) is an international reference observing network, established in 2006, of sites measuring essential climate variables above Earth's surface, designed to fill an important gap in the current global observing system. GRUAN measurements are providing high-quality climate data records from the surface, through the troposphere, and into the stratosphere. These are being used to determine trends, constrain and calibrate data from more spatially comprehensive observing systems (including satellites and current radiosonde networks), and provide appropriate data for studying atmospheric processes. GRUAN is envisaged as a global network of eventually 30-40 sites that, to the extent possible, builds on existing observational networks and capabilities.
GRUAN observation processing is designed to adjust systematic errors in radiosonde measurements of pressure, temperature, humidity, and wind, and to quantify how the uncertainties related to these error sources are derived.
This characterization ensures the traceability to SI units or accepted standards, providing extensive metadata and full documentation of measurements and algorithms.
This allows the full reprocessing from the raw data.
The Climate Data Store provides access to the C3S GRUAN Data Product (GDP) version 2 (V2), for Vaisala RS92 and for Meisei RS-11G sondes. Data products for the new Vaisala RS41 sondes will be added at a later point. Specific GRUAN data products for other sonde types are also under development.
The current dataset provides radiosoundings from 17 stations.
The GRUAN dataset provides the vertical aggregation of quantities listed below in the main-variables table.
Attributes are described in the related-variables tables.
The dataset can be downloaded as NetCDF files (CDM-Obs-Core, see documentation) or as comma-separated values (CSV) files.
More details about the the GRUAN dataset are given in the Documentation section, and
general information and background can be obtained from the GRUAN website (www.gruan.org).