Dust Observations and Climatology - Mineral Dust: A Key Player in the Earth System - page 161

Fig. 7.4 Seasonal distribution of POLDER-3 AOD of the nonspherical coarse mode at 550 nm
over oceans for the year 2009. Seasons are ordered from the left to the right (winter, spring,
summer, autumn, respectively) (From Tanré et al. 2011 )
Fig. 7.5 Seasonal variations of trans-Atlantic dust transport. Shown are season-mean dust AODs
as seen by MODIS, MISR and PARASOL. Each sensor applies a specific algorithm or methodol-
ogy to discern dust from the total aerosol signal (From Yu et al. 2013 )
the general seasonal patterns of dust distribution are consistent, notable differences
exist, especially in magnitude of DOD. This illustrates current issues with satellite
dust identification and quantification. Especially for cases of complex mixtures of
dust and smoke in winter, MODIS and PARASOL DOD are higher than those
derived from MISR. Sampling differences may also contribute to the variable DOD