Properties of jet engine combustion particles during the PartEmis experiment: Hygroscopicity at subsaturated conditions

被引：61

作者：

Gysel, M ^{[1
]}

Nyeki, S

Weingartner, E

Baltensperger, U

Giebl, H

Hitzenberger, R

Petzold, A

Wilson, CW

机构：

[1] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[2] Univ Vienna, Inst Expt Phys, A-1090 Vienna, Austria

[3] Deutsch Zentrum Luft & Raumfahrt, Oberpfaffenhofen, Germany

[4] QinetiQ, Ctr Aerosp Technol, Farnborough GU14 0LX, Hants, England

来源：

GEOPHYSICAL RESEARCH LETTERS | 2003年 / 30卷 / 11期

关键词：

D O I：

10.1029/2003GL016896

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

[1] Hygroscopic properties of combustion particles were measured online with a Hygroscopicity Tandem Differential Mobility Analyzer (H-TDMA) during PartEmis jet engine combustor experiments. The combustor was operated at old and modern cruise conditions with fuel sulfur contents (FSC) of 50, 410 and 1270 mug g(-1), and hygroscopic growth factors (HGF) of particles with different dry diameters were investigated at relative humidities RH less than or equal to 95%. HGFs increased strongly with increasing FSC (HGF[95% RH, 50 nm, modern cruise] = 1.01 and 1.16 for low and high FSC, respectively), and decreased with increasing particle size at fixed FSC, whereas no significant difference was detected between old and modern cruise. HGFs agreed well with a two-parameter theoretical model which provided an estimate of the sulfuric acid content of dry particles, indicating a nearly linear dependence on FSC.

引用

页码：20 / 1

页数：4

共 13 条

[1] Air traffic may increase cirrus cloudiness [J].