According to Physics Chair Kimberly Strong “This is a major leadership role in a very important international observing network that is the gold standard for global measurements of total column abundances of greenhouse gases”.
Professor Wunch is taking over from Paul Wennberg at Caltech, who was the founding Chair back in the early 2000s.
More information on TCCON can be found here: https://tccon-wiki.caltech.edu/
A recent report from the European Commission highlights the importance of TCCON: https://www.copernicus.eu/sites/default/files/2019-09/CO2_Green_Report_2019.pdf
Congratulations Professor Wunch!