Aircraft study of aerosol vertical distributions over Beijing and their
                        optical properties

Liu, Pengfei; Zhao, Chunsheng; Zhang, Qiang; Deng, Zhaoze; Huang, Mengyu; Ma, Xiaojun; Tie, Xuexi

doi:10.1111/j.1600-0889.2009.00440.x

Cited by 139 publications

(62 citation statements)

References 25 publications

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“…Results of solubility are shown in Fig. 2, the experimental data of potassium chloride agree well with the literature data, and the deviation of solubility is less than 2% comparing with the literature data [15].…”

Section: Experiments Reliability Proofsupporting

confidence: 77%

Solubility correlation and thermodynamic analysis of solution of tylosin tartrate in methanol + tetrahydrofuran or acetone) mixtures

Shen

Liu

Zhi

et al. 2015

Journal of Molecular Liquids

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Section: Experiments Reliability Proofsupporting

confidence: 77%

Solubility correlation and thermodynamic analysis of solution of tylosin tartrate in methanol + tetrahydrofuran or acetone) mixtures

Shen

Liu

Zhi

et al. 2015

Journal of Molecular Liquids

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“…The use of biomass fuel combustion in most of the Himalayan region is a significant part of the energy need, and its use escalates during winter season (Parikh 2011). Emissions from biomass and fossil fuel (PAHs and other organic compounds), and climate variables would impact the composition of OCs associated with ambient PM which may differ from that observed from other regions (Gelencsér 2004;Liu et al 2009;Balakrishnan et al 2013).…”

Section: Introductionmentioning

confidence: 95%

Profile of particulate-bound organic compounds in ambient environment of Srinagar: a high-altitude urban location in the North-Western Himalayas

Huma

Yadav

Attri

2016

Environ Sci Pollut Res

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Twenty-four hourly samples of total suspended particulate matter (TSPM) were collected once a week over 17 months in the ambient environment of Srinagar (altitude 1524 m), an urban montane location in the North-Western Himalayas. The samples were analyzed to identify and quantify the presence of diverse organic compounds (OCs) using thermal desorption gas chromatography mass spectroscopy (TD-GCMS). Non-polar organic compounds-n-alkanes, polycyclic aromatic hydrocarbons (PAHs), and molecular tracers (retene and nicotine), were detected in the TSPM samples. Molecular diagnostic ratios, derived from the quantified n-alkanes and PAHs in TSPM, assisted in characterization of the contributing sources. Significant variation in the planetary boundary layer height (meters) with change in season (summer to winter) in this region, also, affected the observed variation in the temporal profile of TSPM-bound OCs. TSPM-bound OCs were predominantly contributed from petroleum and biomass combustion; to a lesser extent from biogenic sources. High concentrations of retene and nicotine, known molecular tracers for coniferous wood combustion and tobacco smoke, respectively, were detected in the winter samples. Seasonal variation in TSPM-bound retene corresponded with the periodicity of biomass burning activity in the region. The benzo(a)pyrene equivalent (BAPE) concentrations, a measure for the carcinogenicity of TSPM-bound PAHs was calculated and the value exceeded the prescribed international standards in winter. This finding poses a major health concern for the inhabitants of this region. High BAPE concentration of PAHs during winter was linked to fossil fuel and biomass combustion, where the prevalent meteorology and topography played a synergistic role.

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“…Meanwhile, many previous analyses of aerosol vertical distributions were confined to small spatial scales with focus on a specific city or region due to coverage limitations [e.g., Li et al, 1997;Osborne and Haywood, 2005;Hains et al, 2008]. Aircraft missions are still used today to collect aerosol samples and measure aerosol size distributions [Kaufman et al, 2003;Shinozuka et al, 2007;Liu et al, 2009a], and ground-based lidar data [e.g., Chazette, 2003;Matthias et al, 2004;Huang et al, 2010] are still necessary to examine vertical profiles of aerosol extinction as most satellite data are restricted to column values or averages. However, due to continued advancement of remote sensing technology, new tools are becoming available to study aerosol profiles.…”

Section: Introductionmentioning

confidence: 99%

Seasonal and diurnal variations of aerosol extinction profile and type distribution from CALIPSO 5‐year observations

et al. 2013

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[1] The new Level 3 aerosol profile data derived from the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) provide a multiyear global aerosol distribution with high vertical resolution. We analyzed seasonal and diurnal variations of the vertical distributions of aerosol properties represented by 5-year CALIPSO data. Results show that dust, smoke, and polluted dust are the most frequently detected aerosol types during all seasons. Dust is the dominant type, especially in the middle to upper troposphere, over most areas during boreal spring and summer, while smoke and polluted dust tend to dominate during biomass burning seasons. The seasonal variations of dust layer top height and dust contribution to all-aerosol extinction are positively correlated with the seasonal variation of the dust occurrence frequency. The seasonal cycle of aerosol properties over west Australia is similar to that over biomass burning regime areas, despite its desert regime. In general, smoke is detected more frequently from the lower to middle troposphere; clean marine and polluted continental aerosols are detected more frequently, while polluted dust is detected less frequently, in the lower troposphere during nighttime than daytime. The all-aerosol extinction is generally larger, and the aerosol layer top is detected at high altitudes more frequently during nighttime than daytime. The diurnal changes of aerosol properties are similar within the same aerosol regime. Dust extinction shows little diurnal variation except when dust is the dominant aerosol type. The results contribute to an initial global 3-D aerosol climatology which will likely be extended and improved in the future.

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Aircraft study of aerosol vertical distributions over Beijing and their optical properties

Abstract: T E L L U S Aircraft study of aerosol vertical distributions overBeijing and their optical properties

Cited by 139 publications

References 25 publications

Solubility correlation and thermodynamic analysis of solution of tylosin tartrate in methanol + tetrahydrofuran or acetone) mixtures

Solubility correlation and thermodynamic analysis of solution of tylosin tartrate in methanol + tetrahydrofuran or acetone) mixtures

Profile of particulate-bound organic compounds in ambient environment of Srinagar: a high-altitude urban location in the North-Western Himalayas

Seasonal and diurnal variations of aerosol extinction profile and type distribution from CALIPSO 5‐year observations

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