Coarse Aerosol Concentration Over the North Polar Waters of the Atlantic

Figures & data

FIG. 1 Locations of the hydrographic measurement stations during the cruises of the r/v “Oceania” in the Norwegian and Greenland Seas in summer periods in 1995–2001.

Table

CSASP-100-HV Specifications
Depth-of-field	2.38 mm
Beam width	0.260 mm
Effective beam width	0.161 mm
Sample area (depth-of-field × effective beam width)	0.384 mm^2
Flow velocity	32.8 m/s
Sampling volume (sampling area × flow velocity)	12.6 cm^3/s
Maximum activity minimum	50% (approx. 500 particles/cc greater than sensitivity)
Size ranges	1–16 μm
	0.5–8 μm

FIG. 2 Wind speed at 10 m a.s.l. (U ₁₀) and humidity at 3 m a.s.l. measured during the experiment.

FIG. 3 Examples of marine aerosol size distribution derived from data collected during the cruises in 1995–2001. Spectrum of particle diameter (2r) fitted by linear regression.

FIG. 4 Correlation coefficient between the logarithm of particle size spectrum ln(n(2r)) and particle diameter (2r).

FIG. 6 Relationship between logarithm of size distribution amplitude (coefficient b) and wind speed.

FIG. 5 Slope of size distribution (coefficient a) as a function of wind speed.

FIG. 7 Relationship between logarithm of size distribution amplitude (coefficient b) and wind speed using all available data. Black line fitted by linear regression, red line-50% error.

FIG. 8 Mean correlation coefficient between particle concentration and wind speed as a function of particle diameter (2r).