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Balloon observations of a particle layer injected by a stratospheric aircraft at 23 km
Author(s) -
Hofmann D. J.,
Rosen J. M.
Publication year - 1978
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/gl005i006p00511
Subject(s) - stratosphere , altitude (triangle) , troposphere , environmental science , atmospheric sciences , jet (fluid) , population , balloon , particle (ecology) , meteorology , geology , physics , mechanics , oceanography , geometry , mathematics , demography , sociology , medicine , cardiology
An extensive layer of small particles (r ≳ 0.01 µm) was observed in association with the passage of a jet aircraft at 23 km altitude. The data are used to estimate the small particle emission index and the source strength of such aircraft at stratospheric altitudes. The impact of such flights on the stratospheric particle population is probably negligible; however, when the results are applied to the currently projected Concorde SST fleet in the stratosphere and the commercial jet fleet in the upper troposphere both are estimated to contribute non‐negligible equilibrium concentrations of such particles to their respective altitude regimes.