It took us a little while to realize: our measurement site on an extensive green roof at Berlin Brandenburg Airport (BER) was chosen as the cover photo for the February issue of the Journal of Geophysical Research :)
The related publication: Konopka, J., Heusinger, J. and Weber, S., 2021. Extensive Urban Green Roof Shows Consistent Annual Net Uptake of Carbon as Documented by 5 Years of Eddy-Covariance Flux Measurements. Journal of Geophysical Research: Biogeosciences, 126(2): e2020JG005879.