Fig. 1: Sources of ammonia at Marambio Station, Antarctica.
From: Penguin guano is an important source of climate-relevant aerosol particles in Antarctica
A A map showing the location of the measurement container with respect to the buildings and facilities of Marambio Station. B A map showing the relevant points of interest for ammonia on Seymour Island. C A wind rose showing the ammonia mixing ratios between 0.01 and 1 ppb according to wind direction and wind speed. Note that the mixing ratio axis is zoomed to a maximum of 1 ppb to show further details in the lower range of mixing ratios. D The frequency of observed NH3 mixing ratios.
