Fig. 1: N2O in incubated samples.
From: Biological nitrous oxide consumption in oxygenated waters of the high latitude Atlantic Ocean
a, b From the North Atlantic during research cruise JR271 from near surface and base of the upper mixed layer respectively; c from cruise JR274 to the South Atlantic, samples collected from the base of the upper mixed layer at stations B03 and B04. In a due to the large environmental variability individual station data is presented as percentage of the original N2O concentration. Stations were located at North Sea (E01 – filled black circle), South of Iceland (E02 – open black circle), Greenland Sea – ice edge (E03 – filled black square), Greenland Sea – in ice (E04 – open black square), Barents Sea (E05 – filled red diamond). In b mean N2O concentrations at each time point, for each station are joined by the grey lines as indicated. In b and c data from all stations were combined, data points (filled black circle) represent mean concentrations ± 1 standard deviation. In a and c the linear regression line representing loss of N2O over time is shown as the solid black line, in c production of N2O over the first 48 h is represented by the dotted line, the red dashed line represents the mean expected value of N2O concentration assuming complete equilibration with the atmosphere.
