Ice nucleation activity of diesel soot particles at cirrus relevant temperature conditions: Effects of hydration, secondary organics coating, soot morphology, and coagulation

被引：42

作者：

Kulkarni, Gourihar ^{[1
]}

China, Swarup ^{[2
,3
,4
]}

Liu, Shang ^{[5
,6
]}

Nandasiri, Manjula ^{[7
]}

Sharma, Noopur ^{[2
,3
]}

Wilson, Jacqueline ^{[8
]}

Aiken, Allison C. ^{[5
]}

Chand, Duli ^{[1
]}

Laskin, Alexander ^{[7
]}

Mazzoleni, Claudio ^{[2
,3
]}

Pekour, Mikhail ^{[1
]}

Shilling, John ^{[1
]}

Shutthanandan, Vaithiyalingam ^{[7
]}

Zelenyuk, Alla ^{[8
]}

Zaveri, Rahul A. ^{[1
]}

机构：

[1] Pacific NW Natl Lab, Atmospher Sci & Global Change Div, Richland, WA 99352 USA

[2] Michigan Technol Univ, Atmospher Sci Program, Houghton, MI 49931 USA

[3] Michigan Technol Univ, Dept Phys, Houghton, MI 49931 USA

[4] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA

[5] Los Alamos Natl Lab, Earth & Environm Sci Div, Los Alamos, NM USA

[6] Univ Colorado, Cooperat Inst Res Environm Sci, Boulder, CO 80309 USA

[7] Pacific NW Natl Lab, Environm Mol Sci Lab, Richland, WA 99352 USA

[8] Pacific NW Natl Lab, Chem Phys & Anal, Richland, WA 99352 USA

来源：

GEOPHYSICAL RESEARCH LETTERS | 2016年 / 43卷 / 07期

基金：

美国国家科学基金会;

关键词：

WATER; INSTRUMENT; NUCLEI; CLOUDS;

D O I：

10.1002/2016GL068707

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Ice formation by diesel soot particles was investigated at temperatures ranging from -40 to -50 degrees C. Size-selected soot particles were physically and chemically aged in an environmental chamber, and their ice nucleating properties were determined using a continuous flow diffusion type ice nucleation chamber. Bare (freshly formed), hydrated, and compacted soot particles, as well as a-pinene secondary organic aerosol (SOA)-coated soot particles at high relative humidity conditions, showed ice formation activity at subsaturation conditions with respect to water but below the homogeneous freezing threshold conditions. However, SOA-coated soot particles at dry conditions were observed to freeze at homogeneous freezing threshold conditions. Overall, our results suggest that heterogeneous ice nucleation activity of freshly emitted diesel soot particles are sensitive to some of the aging processes that soot can undergo in the atmosphere.

引用

页码：3580 / 3588

页数：9

共 1 条

[1] The effects of morphology, mobility size, and secondary organic aerosol (SOA) material coating on the ice nucleation activity of black carbon in the cirrus regime
Zhang, Cuiqi
Zhang, Yue
Wolf, Martin J.
Nichman, Leonid
Shen, Chuanyang
Onasch, Timothy B.
Chen, Longfei
Cziczo, Daniel J.
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2020, 20 (22) : 13957 - 13984

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