GCOS Reference Upper-Air Network
The climate reference network
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.
GRUAN promotional video
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.
Lead Centre hosts meeting on GCOS/GUAN/GRUAN cooperation
Between 5-7 December 2017 the members of the Task Team on GUAN convened at the Lindenberg observatory to discuss the coordination and structure of the...
AMT paper Borger et al. 2017 in review
We are pleased to inform you that your following manuscript has been published as a discussion paper in AMTD, the scientific discussion forum of AMT:...
ICM-10: 23-27 April 2018 in Potsdam
The 10th GRUAN annual Implementation and Coordination Meeting, ICM-10, will be organized 23-27 April 2018.
Testing of new Korean Dual Thermistor Radiosonde
In September, the CORETEMP 2017 campaign was hosted by the GRUAN Lead Centre in Lindenberg.
Status of GRUAN sites
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 2016, GRUAN comprises of 22 sites, 9 of which have been GRUAN certified.