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Extremely high proportions of soot particles in the upper troposphere over Japan
Author(s) -
Okada Kikuo,
Ikegami Miwako,
Uchino Osamu,
Nikaidou Yoshinobu,
Zaizen Yuji,
Tsutsumi Yukitomo,
Makino Yukio
Publication year - 1992
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 - 10.1029/92gl00487
Subject(s) - troposphere , soot , aerosol , atmospheric sciences , combustion , altitude (triangle) , environmental science , meteorology , geology , chemistry , physics , geometry , mathematics , organic chemistry
Observation on tropospheric aerosol particles was carried out on 27 April 1991 over Tsukuba, Japan. Aerosol particles collected in the upper troposphere at 7.5 km altitude were studied by electron microscopy. Soot‐containing particles were collected in a large number fraction (0.53) of the submicron particles. Such a high proportion of soot particles in the upper troposphere has not been reported in previous research. From the X‐ray analysis, vanadium was also detected in some of the particles, indicating the origin of oil combustion. The oil‐well fires in Kuwait are likely to be the origin of these soot particles. Calculated trajectories of the air suggested that these particles over Japan had circled the globe.