DOI: 10.1016/j.atmosres.2017.11.020
Scopus记录号: 2-s2.0-85034604833
论文题名: Application of remote sensing techniques to study aerosol water vapour uptake in a real atmosphere
作者: Fernández A.J. ; Molero F. ; Becerril-Valle M. ; Coz E. ; Salvador P. ; Artíñano B. ; Pujadas M.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 202 起始页码: 112
结束页码: 127
语种: 英语
英文关键词: Aerosol
; Hygroscopicity
; Lidar
; Optical properties
Scopus关键词: Atmospheric boundary layer
; Atmospheric humidity
; Backscattering
; Boundary layers
; Optical properties
; Optical radar
; Remote sensing
; Troposphere
; Aerosol optical property
; Backscatter coefficients
; Cloud condensation nuclei
; Hygroscopicity
; Meteorological analysis
; Microphysical property
; Remote sensing techniques
; Spectral radiometers
; Aerosols
; aerosol
; backscatter
; boundary layer
; cloud condensation nucleus
; hygroscopicity
; lidar
; parameterization
; relative humidity
; remote sensing
; water vapor
; Atlantic Ocean
; Madrid [Madrid (ADS/PRV)]
; Madrid [Spain]
; Spain
英文摘要: In this work, a study of several observations of aerosol water uptake in a real (non-controlled) atmosphere, registered by remote sensing techniques, are presented. In particular, three events were identified within the Atmospheric Boundary Layer (ABL) and other two events were detected in the free troposphere (beyond the top of the ABL). Then, aerosol optical properties were measured at different relative humidity (RH) conditions by means of a multi-wavelength (MW) Raman lidar located at CIEMAT (Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas, Research Centre for Energy, Environment and Technology) facilities in Madrid (Spain). Additionally, aerosol optical and microphysical properties provided by automatic sun and sky scanning spectral radiometers (CIMEL CE-318) and a meteorological analysis complement the study. However, a detailed analysis only could be carried out for the cases observed within the ABL since well-mixed atmospheric layers are required to properly characterize these processes. This characterization of aerosol water uptake is based on the curve described by the backscatter coefficient at 532 nm as a function of RH which allows deriving the enhancement factor. Thus, the Hänel parameterization is utilized, and the results obtained are in the range of values reported in previous studies, which shows the suitability of this approach to study such hygroscopic processes. Furthermore, the anti-correlated pattern observed on backscatter-related Ångström exponent (532/355 nm) and RH indicates plausible signs of aerosol hygroscopic growth. According to the meteorological analysis performed, we attribute such hygroscopic behaviour to marine aerosols which are advected from the Atlantic Ocean to the low troposphere in Madrid. We have also observed an interesting response of aerosols to RH at certain levels which it is suggested to be due to a hysteresis process. The events registered in the free troposphere, which deal with volcano and wild fire plumes transported at higher altitudes, indicate that these processes can take place in the free troposphere, where the climate relevance can be rather different considering the role of aerosol as cloud condensation nuclei. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108983
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Department of Environment, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Avda Complutense, 40, Madrid, 28040, Spain
Recommended Citation:
Fernández A.J.,Molero F.,Becerril-Valle M.,et al. Application of remote sensing techniques to study aerosol water vapour uptake in a real atmosphere[J]. Atmospheric Research,2018-01-01,202