... amount of urban GHG emissions, especially for CH 4 , however, is not well quantified. Here we report on airborne in situ measurements using a Picarro G1301-m analyser aboard the DLR Cessna Grand Caravan to study GHG emissions downwind of the German capital Berlin. In total, five aircraft-based mass...

..., the compatibility of the values reported in this paper are 0.18 ppm CO 2 , 0.6 ppb for CH 4 , and 6 ppb for CO. The INFLUX in-situ observation network includes twelve sites measuring CO 2 dry mole fractions. A subset of five sites additionally measure CO dry mole fraction, and a different subset of five...