The Global Climate Observing System (GCOS) Reference Upper-Air Network (GRUAN) is an international reference observing network 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 long-term, 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.
This video provides an excellent overview of the goals and principles of GRUAN and its relation to the current challenges in climate research. You can find this and other public outreach material here.
The 11th GRUAN annual Implementation and Coordination Meeting, ICM-11, will be organized 20-24 May 2019 in Singapore.
The following GRUAN-relevant paper was published at AMTD: "Comparison of the GRUAN data products for Meisei RS-11G and Vaisala RS92-SGP radiosondes at...
Article Network |
Development of a Site Atmospheric State Best Estimate for Lauder temperature demonstrates the value of collaboration between NIWA and the New Zealand...
The following GRUAN-relevant paper was published at AMTD: "Using reference radiosondes to characterise NWP model uncertainty for improved satellite...
GRUAN is envisaged as a global network of eventually 30-40 measurement sites. To the extent possible, it builds on existing observational networks and capabilities. As at the end of 2017, GRUAN comprises of 26 sites, 9 of which have been GRUAN certified.
A comprehensive volume of measurement data has been collected by GRUAN since 2008. The archive includes raw data and related meta-data. For the Vaisala RS92 radiosonde, the first GRUAN Data Product (GDP) has been fully implemented and available since 2012. Further GDPs are in certification process or under development.