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Noir Collections were made in remote oceanic areas. <fi is the geographical latitude in the Southern Hemisphere

Noir Collections were made in remote oceanic areas. <fi is the geographical latitude in the Southern Hemisphere

Fig. 34

Size distribution of the number (N) and volume (V) of excess (non sea salt) sulfate and sea salt particles with /-S0.03 fim. (Data of A. Meszaros)

Fig. 34

Size distribution of the number (N) and volume (V) of excess (non sea salt) sulfate and sea salt particles with /-S0.03 fim. (Data of A. Meszaros)

Figure 34 represents the average size distribution of sulfate and sea salt particles as observed by A. Meszaros and Vissy (1974) over different parts of the South Atlantic. One can see that on a number basis (solid lines) sulfate particles with much smaller mean radii predominate, while the major proportion of the particle volume (dotted lines) is occupied by the sea salt fraction in the coarse size range. On the basis of the data plotted, only 4 % of the total volume of the particulate matter is composed of sulfates (that total volume is 6.2 /im3 cm ~3). This means that the mass concentration of aerosol particles in remote oceanic areas is also controlled by sea salt.

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