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DOI | 10.5194/acp-19-4311-2019 |
The impact of solar radiation on polar mesospheric ice particle formation | |
Nachbar, Mario1; Wilms, Henrike2; Duft, Denis1; Aylett, Tasha3; Kitajima, Kensei4; Majima, Takuya4; Plane, John M. C.3; Rapp, Markus2,5; Leisner, Thomas1,6 | |
2019-04-03 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2019 |
卷号 | 19期号:7页码:4311-4322 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; England; Japan |
英文摘要 | Mean temperatures in the polar summer mesopause can drop to 130 K. The low temperatures in combination with water vapor mixing ratios of a few parts per million give rise to the formation of ice particles. These ice particles may be observed as polar mesospheric clouds. Mesospheric ice cloud formation is believed to initiate heterogeneously on small aerosol particles (r < 2nm) composed of recondensed meteoric material, so-called meteoric smoke particles (MSPs). Recently, we investigated the ice activation and growth behavior of MSP analogues under realistic mesopause conditions. Based on these measurements we presented a new activation model which largely reduced the uncertainties in describing ice particle formation. However, this activation model neglected the possibility that MSPs heat up in the low-density mesopause due to absorption of solar and terrestrial irradiation. Radiative heating of the particles may severely reduce their ice formation ability. In this study we expose MSP analogues (Fe2O3 and FexSi1-xO3) to realistic mesopause temperatures and water vapor concentrations and investigate particle warming under the influence of variable intensities of visible light (405, 488, and 660 nm). We show that Mie theory calculations using refractive indices of bulk material from the literature combined with an equilibrium temperature model presented in this work predict the particle warming very well. Additionally, we confirm that the absorption efficiency increases with the iron content of the MSP material. We apply our findings to mesopause conditions and conclude that the impact of solar and terrestrial radiation on ice particle formation is significantly lower than previously assumed. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000463364000009 |
WOS关键词 | OPTICAL-PROPERTIES ; NOCTILUCENT CLOUDS ; LIGHT-SCATTERING ; MOLECULAR-BEAM ; WATER-VAPOR ; DUST ; HEMATITE ; NUCLEATION ; SIZE ; H2O |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182278 |
专题 | 地球科学 |
作者单位 | 1.Karlsruhe Inst Technol, Inst Meteorol & Climate Res, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany; 2.Deutsch Zentrum Luft & Raumfahrt, Inst Phys Atmosphere, Oberpfaffenhofen, Germany; 3.Univ Leeds, Sch Chem, Leeds LS2 9JT, W Yorkshire, England; 4.Kyoto Univ, Dept Nucl Engn, Kyoto 6158540, Japan; 5.Ludwig Maximilians Univ Munchen, Meteorol Inst Munchen, Munich, Germany; 6.Heidelberg Univ, Inst Environm Phys, Neuenheimer Feld 229, D-69120 Heidelberg, Germany |
推荐引用方式 GB/T 7714 | Nachbar, Mario,Wilms, Henrike,Duft, Denis,et al. The impact of solar radiation on polar mesospheric ice particle formation[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2019,19(7):4311-4322. |
APA | Nachbar, Mario.,Wilms, Henrike.,Duft, Denis.,Aylett, Tasha.,Kitajima, Kensei.,...&Leisner, Thomas.(2019).The impact of solar radiation on polar mesospheric ice particle formation.ATMOSPHERIC CHEMISTRY AND PHYSICS,19(7),4311-4322. |
MLA | Nachbar, Mario,et al."The impact of solar radiation on polar mesospheric ice particle formation".ATMOSPHERIC CHEMISTRY AND PHYSICS 19.7(2019):4311-4322. |
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