scholarly journals Carbonaceous aerosol particles from common vegetation in the Grand Canyon

1992 ◽  
Author(s):  
K.A. Hallock ◽  
M.A. Mazurek ◽  
G.R. Cass
Keyword(s):  
Aerosol Particles ◽  
Grand Canyon ◽  
Carbonaceous Aerosol

scholarly journals Carbonaceous aerosol particles from common vegetation in the Grand Canyon

1992 ◽  
Author(s):  
K.A. Hallock ◽  
M.A. Mazurek ◽  
G.R. Cass
Keyword(s):  
Aerosol Particles ◽  
Grand Canyon ◽  
Carbonaceous Aerosol

scholarly journals Source Contributions to Rural Carbonaceous Winter Aerosol in North-Eastern Poland

Atmosphere ◽  
2020 ◽  
Vol 11 (3) ◽  
pp. 263 ◽  
Author(s):  
Adam Kristensson ◽  
Stina Ausmeel ◽  
Julija Pauraite ◽  
Axel Eriksson ◽  
Erik Ahlberg ◽  
...  
Keyword(s):  
Source Apportionment ◽  
Aerosol Particles ◽  
Road Transport ◽  
Carbonaceous Aerosol ◽  
Monitoring Site ◽  
Journal Articles ◽  
Wood Combustion ◽  
Combustion Source ◽  
Source Contributions ◽  
North Eastern

Concentrations of aerosol particles in Poland and their sources are rarely discussed in peer-reviewed journal articles despite serious air quality issues. A source apportionment of carbonaceous aerosol particles was performed during winter at a rural background environment field site in north-eastern Poland. Data were used of light absorption at seven wavelengths and levoglucosan concentrations along existing monitoring of PM2.5, organic carbon and elemental carbon (OC/EC) at the Diabła Góra EMEP monitoring site between January 17 and March 19 during the EMEP intensive winter campaign of 2018. Average PM2.5, OC, EC, equivalent black carbon (eBC) and levoglucosan concentrations and standard deviations amounted to 18.5 ± 9.3, 4.5 ± 2.5, 0.57 ± 0.28, 1.04 ± 0.62 and 0.134 ± 0.084 µg m−3 respectively. Various tools for source apportionment were used to obtain a source contribution to carbonaceous matter (CM) with three components. The wood combustion source component contributed 1.63 µg m−3 (21%), domestic coal combustion 3.3 µg m−3 (41%) and road transport exhaust 2.9 µg m−3 (38%). Similar levels and temporal variability were found for the nearby Lithuanian site of Preila, corroborating the Polish results.

scholarly journals Towards radiocarbon dating of ice cores

2009 ◽  
Vol 55 (194) ◽  
pp. 985-996 ◽  
Author(s):  
M. Sigl ◽  
T.M. Jenk ◽  
T. Kellerhals ◽  
S. Szidat ◽  
H.W. Gäggeler ◽  
...  
Keyword(s):  
Aerosol Particles ◽  
Ice Core ◽  
Ice Cores ◽  
Swiss Alps ◽  
Carbonaceous Aerosol ◽  
Polar Ice ◽  
Low Latitude ◽  
Bolivian Andes ◽  
Glacier Ice ◽  
Dating Method

AbstractA recently developed dating method for glacier ice, based on the analysis of radiocarbon in carbonaceous aerosol particles, is thoroughly investigated. We discuss the potential of this method to achieve a reliable dating using examples from a mid- and a low-latitude ice core. Two series of samples from Colle Gnifetti (4450 m a.s.l., Swiss Alps) and Nevado Illimani (6300 m a.s.l., Bolivian Andes) demonstrate that the 14C ages deduced from the water-insoluble organic carbon fraction represent the age of the ice. Sample sizes ranged between 7 and 100 μg carbon. For validation we compare our results with those from independent dating. This new method is thought to have major implications for dating non-polar ice cores in the future, as it provides complementary age information for time periods not accessible with common dating techniques.

Studying seasonal variations in carbonaceous aerosol particles in the atmosphere over central Siberia

2015 ◽  
Vol 51 (4) ◽  
pp. 423-430 ◽  
Author(s):  
E. F. Mikhailov ◽  
S. Yu. Mironova ◽  
M. V. Makarova ◽  
S. S. Vlasenko ◽  
T. I. Ryshkevich ◽  
...  
Keyword(s):  
Seasonal Variations ◽  
Aerosol Particles ◽  
Carbonaceous Aerosol ◽  
Central Siberia

scholarly journals Source apportionment of the carbonaceous aerosol in Norway – quantitative estimates based on <sup>14</sup>C, thermal-optical and organic tracer analysis

2011 ◽  
Vol 11 (3) ◽  
pp. 7375-7422 ◽  
Author(s):  
K. E. Yttri ◽  
D. Simpson ◽  
K. Stenström ◽  
H. Puxbaum ◽  
T. Svendby
Keyword(s):  
Fossil Fuel ◽  
Aerosol Particles ◽  
Size Fraction ◽  
Carbonaceous Aerosol ◽  
Carbonaceous Matter ◽  
Urban Background ◽  
Natural Sources ◽  
Background Site ◽  
Quantitative Estimates ◽  
Urban Background Site

Abstract. In the present study, source apportionment of the ambient summer and winter time particulate carbonaceous matter (PCM) in aerosol particles (PM1 and PM10) has been conducted for the Norwegian urban and rural background environment. Statistical treatment of data from thermal-optical, 14C and organic tracer analysis using Latin Hypercube Sampling has allowed for quantitative estimates of seven different sources contributing to the ambient carbonaceous aerosol. These are: elemental carbon from combustion of biomass (ECbb) and fossil fuel (ECff), organic carbon from combustion of biomass (OCbb), fossil fuel (OCff), primary biological aerosol particles (OCPBAP, which includes plant debris, OCpbc, and fungal spores, OCpbs), and secondary organic aerosol from biogenic precursors (OCBSOA). Our results show that emissions from natural sources were particularly abundant in summer, and with a more pronounced influence at the rural compared to the urban background site. 80% of total carbon (TCp, corrected for the positive artefact) in PM10 and 70% of TCp in PM1 could be attributed to natural sources at the rural background site in summer. Natural sources account for about 50% of TCp in PM10 at the urban background site as well. The natural source contribution was always dominated by OCBSOA, regardless of season, site and size fraction. During winter anthropogenic sources totally dominated the carbonaceous aerosol (83–90%). Combustion of biomass contributed slightly more than fossil-fuel sources in winter, whereas emissions from fossil-fuel sources were more abundant in summer. Mass closure calculations show that PCM likely dominated the mass concentration of the ambient PM regardless of size fraction, season, and site. A larger fraction of PM1 (64–69%) was accounted for by carbonaceous matter compared to PM10 (51–67%), but only by a small margin. In general, there were no pronounced differences in the relative contribution of carbonaceous matter to PM with respect to season or between the two sites.

scholarly journals Chemical composition and source analysis of carbonaceous aerosol particles at a mountaintop site in central Sweden

Tellus B ◽  
2017 ◽  
Vol 69 (1) ◽  
pp. 1353387 ◽  
Author(s):  
Vera Franke ◽  
Paul Zieger ◽  
Ulla Wideqvist ◽  
Juan Camilo Acosta Navarro ◽  
Caroline Leck ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Aerosol Particles ◽  
Carbonaceous Aerosol ◽  
Source Analysis

scholarly journals Microphysical properties of carbonaceous aerosol particles generated by laser ablation of a graphite target

2015 ◽  
Vol 8 (3) ◽  
pp. 1207-1215 ◽  
Author(s):  
T. Ajtai ◽  
N. Utry ◽  
M. Pintér ◽  
G. Kiss-Albert ◽  
R. Puskás ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Mass Concentration ◽  
Aerosol Particles ◽  
Comprehensive Analysis ◽  
Carbonaceous Aerosol ◽  
Graphite Target ◽  
Graphite Sample ◽  
Microphysical Properties ◽  
Optical Responses ◽  
Transmission Electron

Abstract. In this work various microphysical properties including mass concentration, size distribution and morphology of aerosol particles generated by laser ablation of a high purity graphite sample were investigated in detail. Supplementary chemical analysis of the generated particles including microstructure investigation by high-resolution transmission electron microscopy (HRTEM) and Raman spectroscopy were also made. These measurements proved that the proposed method can be used to model the real atmospheric carbonaceous particulate under various climate relevant conditions regarding its specific properties investigated here. However, to introduce the presented methodology as a novel BC surrogate, further improvement and investigation including simplification in experimental setup, comprehensive analysis of thermochemical refractiveness and optical responses of the generated particles as well as comparative study with the presently available concurrent surrogates are required. The related results of these issues are planned to be demonstrated in other studies.

scholarly journals Optical Properties of Carbonaceous Aerosol Particles by Low-Loss EELS

2006 ◽  
Vol 12 (S02) ◽  
pp. 1160-1161
Author(s):  
DT L Alexander ◽  
PA Crozier ◽  
J Anderson
Keyword(s):  
Optical Properties ◽  
Aerosol Particles ◽  
Carbonaceous Aerosol ◽  
Low Loss

Extended abstract of a paper presented at Microscopy and Microanalysis 2006 in Chicago, Illinois, USA, July 30 – August 3, 2006

scholarly journals Sources of carbonaceous aerosol in the Amazon Basin

2010 ◽  
Vol 10 (12) ◽  
pp. 29923-29969 ◽  
Author(s):  
S. Gilardoni ◽  
E. Vignati ◽  
E. Marmer ◽  
F. Cavalli ◽  
C. Belis ◽  
...  
Keyword(s):  
Biomass Burning ◽  
Amazon Basin ◽  
Elemental Carbon ◽  
Aerosol Particles ◽  
Dry Season ◽  
Carbonaceous Aerosol ◽  
Wet Season ◽  
Aerosol Mass ◽  
Aerosol Sources ◽  
Coarse Aerosol

Abstract. The quantification of sources of carbonaceous aerosol is important to understand their atmospheric concentrations and regulating processes and to study possible effects on climate and air quality, in addition to develop mitigation strategies. In the framework of the European Aerosol Cloud Climate Interaction (EUCAARI) project fine (Dp < 2.5 μm) and coarse (2.5 μm < Dp < 10 μm) aerosol particles were sampled from February to June (wet season) and from August to September (dry season) 2008 in the Central Amazon Basin. The mass of fine particles averaged 2.4 μg m−3 during the wet season and 4.2 μg m−3 during the dry season. The average coarse aerosol mass concentration during wet and dry periods was 7.9 and 7.6 μg m−3, respectively. The overall chemical composition of fine and coarse mass did not show any seasonality with the largest fraction of fine and coarse aerosol mass explained by organic carbon (OC); the average OC to mass ratio was 0.4 and 0.6 in fine and coarse aerosol modes, respectively. The mass absorbing cross section of soot was determined by comparison of elemental carbon and light absorption coefficient measurements and it was equal to 4.7 m2 g−1 at 637 nm. Carbon aerosol sources were identified by Positive Matrix Factorization (PMF) analysis of thermograms: 43% of fine total carbon mass was assigned to biomass burning, 34% to secondary organic aerosol (SOA), and 23% to volatile species that are difficult to apportion. In the coarse mode, primary biogenic aerosol particles (PBAP) dominated the carbonaceous aerosol mass. The results confirmed the importance of PBAP in forested areas. The source apportionment results were employed to evaluate the ability of global chemistry transport models to simulate carbonaceous aerosol sources in a regional tropical background site. The comparison showed an overestimation of elemental carbon (EC) by the TM5 model during the dry season and OC both during the dry and wet periods. The overestimation was likely due to the overestimation of biomass burning emission inventories and SOA production over tropical areas.

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