Latitudinal variations of stratospheric aerosols

Details Latitudinal variations of stratospheric aerosols Latitudinal variations of stratospheric aerosols

Feb 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979jgr....84..733f&link_type=abstract

Journal of Geophysical Research, vol. 84, Feb. 20, 1979, p. 733-743.

Other

2

Aerosols, Atmospheric Composition, Latitude, Particle Size Distribution, Stratosphere, Sulfates, Accumulators, Altitude, Drop Size, Electron Microscopy, Graphs (Charts), Northern Hemisphere, Tropical Regions, U-2 Aircraft

Scientific paper

We have obtained stratospheric aerosols from tropical to northern latitudes using special collectors on U-2 aircraft during 1976 and 1977. Aerosols characterized by large numbers of small particles are found in the tropical zone suggesting this is a region of particle growth; whereas aerosols containing mostly larger particles are distributed throughout the Northern Hemisphere indicating a well-mixed, mature population. We find the aerosol layer extends from higher altitudes near the equator to lower ones toward the pole. Although this gradient suggests mature aerosols may leave the stratosphere at high latitudes, the data are, as yet, inconclusive. Comparisons of our data with those of other investigators using different instruments are generally encouraging, suggesting that if similar populations were sampled, the results would be similar. When our calculated sulfate mass mixing ratios are compared with those measured directly by others, we find better agreement is achieved if we assume more dilute sulfate and water mixtures than previously proposed.

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