globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2017.07.037
Scopus记录号: 2-s2.0-85026489949
论文题名:
Multi year aerosol characterization in the tropical Andes and in adjacent Amazonia using AERONET measurements
作者: Pérez-Ramírez D; , Andrade-Flores M; , Eck T; F; , Stein A; F; , O'Neill N; T; , Lyamani H; , Gassó S; , Whiteman D; N; , Veselovskii I; , Velarde F; , Alados-Arboledas L
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 166
起始页码: 412
结束页码: 432
语种: 英语
英文关键词: Aerosol absorption ; Aerosol in Amazonia ; Aerosol in high mountain sites
Scopus关键词: Aerosols ; Atmospheric aerosols ; Atmospheric movements ; Landforms ; Smoke ; Aerosol absorption ; Aerosol characterization ; Aerosol optical characteristic ; Aerosol optical depths ; Amazonia ; High mountains ; Single scattering albedo ; Transport of particles ; Air pollution ; absorption ; AERONET ; aerosol ; air mass ; albedo ; atmospheric transport ; biomass burning ; dust ; lowland environment ; mountain region ; smoke ; tropical environment ; troposphere ; upland region ; aerosol ; albedo ; Article ; biomass ; environmental health ; optics ; particle size ; pollution ; precipitation ; priority journal ; refraction index ; seasonal variation ; smoke ; South America ; troposphere ; vegetation ; water vapor ; Acre [Brazil] ; Amazonia ; Andes ; Bolivia ; Brazil ; Cuiaba ; Ji-Parana ; La Paz [Bolivia] ; Mato Grosso ; Rio Branco [Acre] ; Rondonia ; Santa Cruz [Bolivia] ; Santa Cruz [Santa Cruz (DPR)]
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: This work focuses on the analysis of columnar aerosol properties in the complex geophysical tropical region of South America within 10–20° South and 50–70° West. The region is quite varied and encompasses a significant part of Amazonia (lowlands) as well as high mountains in the Andes (highlands,∼4000 m a.s.l.). Several AERONET stations were included to study the aerosol optical characteristics of the lowlands (Rio Branco, Ji Parana and Cuiaba in Brazil and Santa Cruz in Bolivia) and the highlands (La Paz, Bolivia) during the 2000–2014 period. Biomass-burning is by far the most important source of aerosol in the lowlands, particularly during the dry season (August–October). Multi-annual variability was investigated and showed very strong burning activity in 2005, 2006, 2007 and 2010. This resulted in smoke characterized by correspondingly strong, above-average AODs (aerosol optical depths) and homogeneous single scattering albedo (SSA) across all the stations (∼0.93). For other years, however, SSA differences arise between the northern stations (Rio Branco and Ji Parana) with SSAs of ∼0.95 and the southern stations (Cuiaba and Santa Cruz) with lower SSAs of ∼0.85. Such differences are explained by the different types of vegetation burned in the two different regions. In the highlands, however, the transport of biomass burning smoke is found to be sporadic in nature. This sporadicity results in highly variable indicators of aerosol load and type (Angstrom exponent and fine mode fraction) with moderately significant increases in both. Regional dust and local pollution are the background aerosol in this highland region, whose elevation places it close to the free troposphere. Transported smoke particles were generally found to be more optical absorbing than in the lowlands: the hypothesis to explain this is the significantly higher amount of water vapor in Amazonia relative to the high mountain areas. The air-mass transport to La Paz was investigated using the HYSPLIT air-concentration five-days back trajectories. Two different patterns were clearly differentiated: westerly winds from the Pacific that clean the atmosphere and easterly winds favoring the transport of particles from Amazonia. © 2017 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82701
Appears in Collections:气候变化事实与影响

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作者单位: Applied Physics Department, University of Granada, Granada, Spain; Andalusian Institute for Earth System Research (IISTA), Av.Mediterráneo s/n, Granada, Spain; Laboratory for Atmospheric Physics, Universidad Mayor de San Andrés, La Paz, Bolivia; Department of Atmospheric and Oceanic Sciences, University of Maryland, College Park, MD, United States; Goddard Earth Sciences Technology and Research, University Space Research Association (GESTAR/USRA), Columbia, MD, United States; Biospheric Sciences Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; NOAA Air Resources Laboratory, 5830 University Research Court, College Park, MD, United States; Centre d'Applications et de Recherches en Telédetection, Université de Sherbrooke, Sherbrooke, Canada; Morgan State UniversityMD, United States; Climate and Radiation Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Mesoscale Atmospheric Processes Laboratory, NASA Goddard Space Flight Center, Greenbelt, MD, United States; Joint Center for Earth Systems Technology, University of Maryland Baltimore County, Baltimore, MD, United States; Physics Instrumentation Center of General Physics Institute, Troitsk, Moscow, Russian Federation

Recommended Citation:
Pérez-Ramírez D,, Andrade-Flores M,, Eck T,et al. Multi year aerosol characterization in the tropical Andes and in adjacent Amazonia using AERONET measurements[J]. Atmospheric Environment,2017-01-01,166
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