Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/qj.2557 |
Role of spheroidal particles in closure studies for aerosol microphysical-optical properties | |
Sorribas, M.1,2; Olmo, F. J.1,2; Quirantes, A.1,2; Lyamani, H.1,2; Gil-Ojeda, M.3; Alados-Arboledas, L.1,2; Horvath, H.4 | |
通讯作者 | Sorribas, M. |
来源期刊 | QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY
![]() |
ISSN | 0035-9009 |
EISSN | 1477-870X |
出版年 | 2015 |
卷号 | 141期号:692页码:2700-2707 |
英文摘要 | A study has been carried out to assess the discrepancies between computed and observed aerosol scattering and backscattering properties in the atmosphere. The goals were: (i) to analyse the uncertainty associated with computed optical properties when spherical and spheroidal approximations are used, and (ii) to estimate nephelometry errors due to angular truncation and non-Lambertian illumination of the light source in terms of size range, particle shape and aerosol chemical compounds. Mie and T-matrix theories were used for computing light optical properties for spherical and spheroidal particles, respectively, from observed particle size distributions. The scattering coefficient of the fine mode was not much influenced by the particle shape. However, computed backscattering values underestimated the observed values by approximate to 15%. For the coarse mode, the spheroidal approximation yielded better results than that for spherical particles, especially for backscattering properties. Even after applying the spheroidal approximation, computed scattering and backscattering values within the coarse mode underestimated the observed values by approximate to 49% and approximate to 11%, respectively. The angular correction most widely used to correct the nephelometer data was discussed to explore its uncertainty. In the case of the scattering properties within the coarse mode, the change of the computed optical parameter is approximate to+8% and for the scattering and backscattering values within the fine mode it is lower than approximate to +/- 4% for spherical and spheroidal particles. Additionally, if the spheroidal particles are used to evaluate the aerosol optical properties, the correction must be reconsidered with the aim of reducing the uncertainty found for scattering within the coarse mode. This is recommended for sites with desert dust influence; then the deviation of the computed scattering can be up to 13%. |
英文关键词 | atmospheric aerosol spheroidal particles spherical particles aerosol microphysical properties aerosol optical properties |
类型 | Article |
语种 | 英语 |
国家 | Spain ; Austria |
收录类别 | SCI-E |
WOS记录号 | WOS:000363865700019 |
WOS关键词 | DESERT DUST EVENTS ; LIGHT-SCATTERING ; RADIATIVE PROPERTIES ; INTEGRATING NEPHELOMETER ; SIZE DISTRIBUTION ; LONG-TERM ; CAMPAIGN ; DISTRIBUTIONS ; 3-WAVELENGTH ; SIMULATIONS |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/189963 |
作者单位 | 1.Univ Granada, Dept Appl Sci, E-18071 Granada, Spain; 2.Univ Granada, Andalusian Inst Earth Syst Res IISTA, E-18071 Granada, Spain; 3.INTA, Atmospher Res & Instrumentat Branch, Madrid, Spain; 4.Univ Vienna, Fac Phys, A-1010 Vienna, Austria |
推荐引用方式 GB/T 7714 | Sorribas, M.,Olmo, F. J.,Quirantes, A.,et al. Role of spheroidal particles in closure studies for aerosol microphysical-optical properties[J],2015,141(692):2700-2707. |
APA | Sorribas, M..,Olmo, F. J..,Quirantes, A..,Lyamani, H..,Gil-Ojeda, M..,...&Horvath, H..(2015).Role of spheroidal particles in closure studies for aerosol microphysical-optical properties.QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY,141(692),2700-2707. |
MLA | Sorribas, M.,et al."Role of spheroidal particles in closure studies for aerosol microphysical-optical properties".QUARTERLY JOURNAL OF THE ROYAL METEOROLOGICAL SOCIETY 141.692(2015):2700-2707. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。