DOI: 10.1016/j.atmosenv.2014.12.036
Scopus记录号: 2-s2.0-84921022853
论文题名: Atmospheric boundary layer and ozone-aerosol interactions under Saharan intrusions observed during AMISOC summer campaign
作者: Adame J ; A ; , Córdoba-Jabonero C ; , Sorribas M ; , Toledo D ; , Gil-Ojeda M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 104 起始页码: 205
结束页码: 216
语种: 英语
英文关键词: ABL
; Aerosol
; Ozone
; Saharan dust
Scopus关键词: Aerosols
; Atmospheric chemistry
; Atmospheric humidity
; Atmospheric movements
; Atmospheric temperature
; Boundary layers
; Dust
; Ozone
; Ozone layer
; Remote sensing
; Upper atmosphere
; ABL
; Aerosol extinction
; Back trajectory analysis
; Particle concentrations
; Remote sensing techniques
; Saharan dust
; Saharan dust intrusions
; Surface temperatures
; Atmospheric boundary layer
; ozone
; aerosol
; boundary layer
; concentration (composition)
; meteorology
; ozone
; remote sensing
; surface temperature
; Article
; boundary layer
; controlled study
; environmental temperature
; gas
; humidity
; molecular interaction
; priority journal
; remote sensing
; summer
; surface property
; Sahara
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: A research campaign was performed for the AMISOC (Atmospheric Minor Species relevant to the Ozone Chemistry) project at El Arenosillo observatory (southwest Spain) in May-June 2012. The campaign focused on the impact of Saharan dust intrusions at the atmospheric boundary layer (ABL) and ozone-aerosol interactions. In-situ and remote-sensing techniques for gases and aerosols were used in addition to modelling analyses. Meteorology features, ABL structures and evolution, aerosol profiling distributions and aerosol-ozone interactions on the surface were analysed. Two four-day periods were selected according to non-dusty (clean conditions) and dusty (Saharan dust) situations. In both scenarios, sea-land breezes developed in the lower atmosphere, but differences were found in the upper levels. Results show that surface temperatures were greater than 3°C and humidity were lower during dusty than non-dusty conditions. Thermal structures on the surface layer (estimated using an instrument on a 100m tower) show differences, mainly during nocturnal periods with less intense inversions under dusty conditions. The mixing layer during dusty days was 400-800m thick, less than observed on non-dusty. Dust also disturbed the typical daily ABL evolution. Stable conditions were observed in the early evening during intrusions. Aerosol extinction on dusty days was 2-3 times higher, and the dust was confined between 1500 and 5500m. Back trajectory analyses confirmed that the dust had an African origin. On surface, the particle concentration was approximately 3.5 times higher during dusty events, but the local ozone did not exhibit any change. The arrival of Saharan dust in the upper levels impacted the meteorological surface, inhibited the daily evolution of the ABL and caused an increase in aerosol loading on the surface and at higher altitudes; however, no dust influence was observed on the surface ozone. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81984
Appears in Collections: 气候变化事实与影响
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作者单位: Atmospheric Sounding Station El Arenosillo, Atmospheric Research and Instrumentation Branch, Instituto Nacional de Técnica Aeroespacial (INTA), Huelva, Spain; Andalusian Center for Environmental Research (CEAMA), Department of Applied Physics, Universidad de Granada (UGR), Granada, Spain
Recommended Citation:
Adame J,A,, Córdoba-Jabonero C,et al. Atmospheric boundary layer and ozone-aerosol interactions under Saharan intrusions observed during AMISOC summer campaign[J]. Atmospheric Environment,2015-01-01,104