Chemical relationships in the North Atlantic marine aerosol
Abstract
A data set from Bermuda of 10 particle size distribution measurements of the marine aerosol, by five-stage cascade impactor and X ray analysis, has been used in a two-component model to resolve tropospheric from sea surface derived trace elements. Assuming a sea surface origin for largest-particle S and Cl and a tropospheric origin for Fe in all particle size ranges, the ratios to Fe of the tropospheric components S, K, and Zn decrease with increasing particle size, but Ca/Fe increases. The net sea surface component for the largest particles exhibits a ratio of Cl/S = 5.7, apparently differing from the seawater ratio of 21.4 because of S enrichment and Cl depletion, relative to the sea surface components of K or Ca which are found approximately in seawater proportions.
- Publication:
-
Journal of Geophysical Research
- Pub Date:
- April 1977
- DOI:
- 10.1029/JC082i012p01778
- Bibcode:
- 1977JGR....82.1778M
- Keywords:
-
- Aerosols;
- Air Water Interactions;
- Atmospheric Boundary Layer;
- Atmospheric Composition;
- Marine Environments;
- Particle Size Distribution;
- Atlantic Ocean;
- Cascades;
- Chemical Composition;
- Chlorides;
- Iron;
- Ocean Surface;
- Sulfur;
- Trace Elements;
- Troposphere;
- X Ray Analysis;
- Geophysics;
- Meteorology: Chemical composition and chemical interactions;
- Meteorology: Particles and aerosols;
- Oceanography: Chemical oceanography;
- Information Related to Geographic Region: Atlantic Ocean