Figure 1: Map of study sites and global distribution of aerosols.
From: Dust inputs and bacteria influence dissolved organic matter in clear alpine lakes
Approximate location (white dots) of lakes (ATL=Atlas (2 lakes, N=2); SN=Sierra Nevada (25 lakes, N=25); PYR=Pyrenees (16 lakes, N=28); ALP=Tyrolean Alps (17 lakes, N=38); PAT=Patagonian Andes (6 lakes, N=6); ANT=Antarctica (15 lakes, N=15), ARC=Canadian Arctic (6 lakes, N=6)) sampled in this study and contours of the annual mean aerosol index (AI) obtained by the NASA–KNMI Ozone Monitoring Instrument. AI values <0.2 removed for clarity. Monthly and annual mean weighted AI values are shown in Supplementary Tables S1 and S2, and calculations are described in the Supplementary Methods. N=number of samples.
