Extended Data Fig. 7: Absorption Ångström Exponent of dark BrC.
From: Shortwave absorption by wildfire smoke dominated by dark brown carbon
Absorption Ångström Exponent (AÅE) across the near-UV and visible spectra in wavelength intervals corresponding to different wavelength intervals used extensively for detecting and characterizing wildfire smoke plumes45,61. The two ends of a solid black line represent the two wavelengths λ1 and λ2 between which the AÅE, which is defined as the exponent in a power law expressing the ratio of the mean absorption coefficients (λ1, λ2), is calculated. A total of 33 smoke samples were analyzed for the calculation of AÅE. Only one estimate of AÅE is available, so the standard error cannot be calculated directly.
