DOI: 10.1029/96gl03235. The potential impact of soot particles from aircraft exhaust on cirrus clouds

The potential impact of soot particles from aircraft exhaust on cirrus clouds

10.1029/96gl03235

Crossref journal-article

American Geophysical Union (AGU)

Geophysical Research Letters (13)

Abstract

Homogeneous freezing of sulfate aerosols may dominate ice nucleation in cirrus, implying that large supersaturations are required for cirrus cloud initiation at low temperatures. However, insoluble particles from the surface or soot particles injected directly into the upper troposphere by jet aircraft may act as heterogeneous ice nuclei. If the soot particles are sufficiently effective ice nuclei, then they will allow ice nucleation at lower supersaturations than those required for homogeneous freezing, resulting in an increase in the areal coverage of cirrus clouds. Simulations using a detailed ice cloud model indicate that cirrus driven by slow, steady lifting (a few cm‐s−1) will be transient, precipitating clouds if only pure sulfate haze aerosols are present. However, if effective heterogeneous nuclei are present, then extensive, persistent, diffuse cirrus should form. In addition, heterogeneous ice nucleation on insoluble particles may modify the number of ice crystals nucleated in cirrus, resulting in alterations of the cloud evolution and radiative properties. Heterogeneous freezing on relatively few insoluble particles (Ninv <0.1 cm−3) should result in fewer ice crystals nucleating than if homogeneous freezing were to occur. However, if large numbers of insoluble particles are present, the ice crystal number density may be increased.

Bibliography

Jensen, E. J., & Toon, Owen. B. (1997). The potential impact of soot particles from aircraft exhaust on cirrus clouds. Geophysical Research Letters, 24(3), 249â252. Portico.

Authors 2

Eric J. Jensen (first)
Owen. B. Toon (additional)

References 18 Referenced 107

10.1021/jp952551v
10.1029/94JD03118
{'key': 'e_1_2_1_4_1', 'volume-title': 'Physics of Rain Clouds', 'author': 'Fletcher N. H.', 'year': '1962'} / Physics of Rain Clouds by Fletcher N. H. (1962)
10.1175/1520-0469(1996)053<3333:NSOPC>2.0.CO;2
10.1080/02726359208906598
10.1175/1520-0469(1995)052<4302:RHATIO>2.0.CO;2
10.1029/93JD02334
10.1029/94GL01287
10.1029/95GL01337
10.1016/0169-8095(89)90049-5
10.2514/3.46368
10.1080/02786829008959406
10.1029/92GL01801
10.1175/1520-0469(1989)046<3005:HPNSIC>2.0.CO;2
10.1029/95JD03405
10.1029/94GL01387
10.1029/94GL01588
10.1016/0021-8502(95)00010-A

Dates

Type	When
Created	21 years, 7 months ago (Feb. 3, 2004, 10:24 p.m.)
Deposited	1 year, 9 months ago (Nov. 21, 2023, 10:58 p.m.)
Indexed	1 month ago (Aug. 6, 2025, 9:38 a.m.)
Issued	28 years, 7 months ago (Feb. 1, 1997)
Published	28 years, 7 months ago (Feb. 1, 1997)
Published Online	28 years, 7 months ago (Feb. 1, 1997)
Published Print	28 years, 7 months ago (Feb. 1, 1997)

Funders 0

None

BibTeX

@article{Jensen_1997, title={The potential impact of soot particles from aircraft exhaust on cirrus clouds}, volume={24}, ISSN={1944-8007}, url={http://dx.doi.org/10.1029/96gl03235}, DOI={10.1029/96gl03235}, number={3}, journal={Geophysical Research Letters}, publisher={American Geophysical Union (AGU)}, author={Jensen, Eric J. and Toon, Owen. B.}, year={1997}, month=feb, pages={249–252} }

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