Influence of Regional Transport Mechanisms on the Fingerprint of Biomass-Burning Aerosols in Buenos Aires

Figure 4

Variation of Ångström exponent with AOD500nm at CEILAP-BA in the five-year period 2001–2005. (a) Black diamond: days with regional transport of biomass-burning aerosols (selected dates). Open circle: daily data with the selected days excluded: (b) same as (a) during biomass-burning months (August to September); (c) same as (a) during no-burning months; and (d) days with regional transport of biomass-burning aerosols, red diamond: biomass-burning months, and blue diamond: no-burning months. + denotes the “selected dates.”

(a)

(b)

(c)

(d)