Ice nucleation on soot in contrails and cirrus: Laboratory view

O. B. Popovicheva; P. J. DeMott; K. A. Koehler; S. M. Kreidenweis; M. D. Petters; C. M. Carrico; N. Shonija; E. Kireeva

Ice nucleation on soot in contrails and cirrus: Laboratory view

O. B. Popovicheva, P. J. DeMott, K. A. Koehler, S. M. Kreidenweis, M. D. Petters, C. M. Carrico, N. Shonija, E. Kireeva

Research output: Contribution to journal › Article › peer-review

Abstract

Laboratory studies of water uptake and ice nucleation (for temperatures ≤ -40°C) are presented for combustion particles of a wide range of physico-chemical properties, from hydrophobic through a range of hydrophilicity, to hygroscopic ones. Different mechanisms of water interactions with aircraft-generated soot aerosols of various compositions are considered for contrail and cirrus formation conditions. The findings generally confirm that heterogeneous ice nucleation is a function of surface oxidation of hydrophilic soot, hydrophobic soot initiates the ice phase from water vapor only at water supersaturated conditions while hygroscopic soot behaves in a manner reflecting homogeneous freezing with particles containing soluble matter.

Original language	English (US)
Pages (from-to)	51-56
Number of pages	6
Journal	DLR Deutsches Zentrum fur Luft- und Raumfahrt e.V. - Forschungsberichte
Issue number	10
State	Published - Sep 20 2010
Externally published	Yes

Keywords

Aircraft particulates
Cirrus
Contrail
Ice nucleation
Soot

ASJC Scopus subject areas

Aerospace Engineering
Space and Planetary Science
Applied Mathematics

Cite this

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title = "Ice nucleation on soot in contrails and cirrus: Laboratory view",

abstract = "Laboratory studies of water uptake and ice nucleation (for temperatures ≤ -40°C) are presented for combustion particles of a wide range of physico-chemical properties, from hydrophobic through a range of hydrophilicity, to hygroscopic ones. Different mechanisms of water interactions with aircraft-generated soot aerosols of various compositions are considered for contrail and cirrus formation conditions. The findings generally confirm that heterogeneous ice nucleation is a function of surface oxidation of hydrophilic soot, hydrophobic soot initiates the ice phase from water vapor only at water supersaturated conditions while hygroscopic soot behaves in a manner reflecting homogeneous freezing with particles containing soluble matter.",

keywords = "Aircraft particulates, Cirrus, Contrail, Ice nucleation, Soot",

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TY - JOUR

T1 - Ice nucleation on soot in contrails and cirrus

T2 - Laboratory view

AU - Popovicheva, O. B.

AU - DeMott, P. J.

AU - Koehler, K. A.

AU - Kreidenweis, S. M.

AU - Petters, M. D.

AU - Carrico, C. M.

AU - Shonija, N.

AU - Kireeva, E.

PY - 2010/9/20

Y1 - 2010/9/20

N2 - Laboratory studies of water uptake and ice nucleation (for temperatures ≤ -40°C) are presented for combustion particles of a wide range of physico-chemical properties, from hydrophobic through a range of hydrophilicity, to hygroscopic ones. Different mechanisms of water interactions with aircraft-generated soot aerosols of various compositions are considered for contrail and cirrus formation conditions. The findings generally confirm that heterogeneous ice nucleation is a function of surface oxidation of hydrophilic soot, hydrophobic soot initiates the ice phase from water vapor only at water supersaturated conditions while hygroscopic soot behaves in a manner reflecting homogeneous freezing with particles containing soluble matter.

AB - Laboratory studies of water uptake and ice nucleation (for temperatures ≤ -40°C) are presented for combustion particles of a wide range of physico-chemical properties, from hydrophobic through a range of hydrophilicity, to hygroscopic ones. Different mechanisms of water interactions with aircraft-generated soot aerosols of various compositions are considered for contrail and cirrus formation conditions. The findings generally confirm that heterogeneous ice nucleation is a function of surface oxidation of hydrophilic soot, hydrophobic soot initiates the ice phase from water vapor only at water supersaturated conditions while hygroscopic soot behaves in a manner reflecting homogeneous freezing with particles containing soluble matter.

KW - Aircraft particulates

KW - Cirrus

KW - Contrail

KW - Ice nucleation

KW - Soot

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Ice nucleation on soot in contrails and cirrus: Laboratory view

Abstract

Keywords

ASJC Scopus subject areas

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