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Ice nucleus and aerosol measurements in the plume of the Johnstown, PA., steel mill
Author(s) -
Schnell R. C.,
Pueschel R. F.,
Weickmann H. K.,
Wellman D. L.
Publication year - 1980
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/gl007i005p00397
Subject(s) - plume , aerosol , atmospheric sciences , ice nucleus , environmental science , drop (telecommunication) , meteorology , geology , chemistry , physics , telecommunications , organic chemistry , computer science , nucleation
The Johnstown steel mill was observed to produce aerosols containing ice nuclei active at threshold temperatures between −6°C and −8°C (warmer than those observed for background air) and in concentrations up to a factor of 5 greater than background air in the temperature range of −10°C to −12°C, as tested with a combination membrane filter‐drop freezing technique. These ice nuclei were not observed in the plume at distances greater than 15 km downwind of the source.