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Journal articles on the topic 'Aerosol origins'

Author: Grafiati

Published: 22 June 2024

Last updated: 31 July 2025

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1

EVERTS, SARAH. "AEROSOL ORIGINS." Chemical & Engineering News 85, no. 10 (2007): 10. http://dx.doi.org/10.1021/cen-v085n010.p010a.

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Rashki, Alireza, Somayeh Feizollahi, and Ali Bayat. "Characteristics of aerosol types and identifying the external dust sources (the case of Mashhad city, Iran)." E3S Web of Conferences 575 (2024): 03003. http://dx.doi.org/10.1051/e3sconf/202457503003.

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Aerosols, consisting of solid, liquid, and gaseous particles, emerge from both natural and humaninduced origins, impacting air quality over substantial distances. This investigation focuses on discerning dust origins in the polluted city of Mashhad, Iran. Crucial parameters, such as aerosol optical thickness (AOT) and Ångström exponent (AE), play a vital role in understanding aerosols and atmospheric pollutants. Ground-based sun photometers (Calitoo) were employed for calculating AOT and AE at different wavelengths to determine the aerosol characteristics and to reveal the prevalence of urban-

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Song, Congbo, Manuel Dall'Osto, Angelo Lupi, et al. "Differentiation of coarse-mode anthropogenic, marine and dust particles in the High Arctic islands of Svalbard." Atmospheric Chemistry and Physics 21, no. 14 (2021): 11317–35. http://dx.doi.org/10.5194/acp-21-11317-2021.

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Abstract. Understanding aerosol–cloud–climate interactions in the Arctic is key to predicting the climate in this rapidly changing region. Whilst many studies have focused on submicrometer aerosol (diameter less than 1 µm), relatively little is known about the supermicrometer aerosol (diameter above 1 µm). Here, we present a cluster analysis of multiyear (2015–2019) aerodynamic volume size distributions, with diameter ranging from 0.5 to 20 µm, measured continuously at the Gruvebadet Observatory in the Svalbard archipelago. Together with aerosol chemical composition data from several online an

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Xia, Junji, Fengrong Zhu, Xingbing Zhao, et al. "Optical Properties and Possible Origins of Atmospheric Aerosols over LHAASO in the Eastern Margin of the Tibetan Plateau." Remote Sensing 16, no. 10 (2024): 1695. http://dx.doi.org/10.3390/rs16101695.

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The accuracy of cosmic ray observations by the Large High Altitude Air Shower Observatory Wide Field-of-View Cherenkov/Fluorescence Telescope Array (LHAASO-WFCTA) is influenced by variations in aerosols in the atmosphere. The solar photometer (CE318-T) is extensively utilized within the Aerosol Robotic Network as a highly precise and reliable instrument for aerosol measurements. With this CE318-T 23, 254 sets of valid data samples over 394 days from October 2020 to October 2022 at the LHAASO site were obtained. Data analysis revealed that the baseline Aerosol Optical Depth (AOD) and Ångström E

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Laskin, Alexander, Julia Laskin, and Sergey A. Nizkorodov. "Mass spectrometric approaches for chemical characterisation of atmospheric aerosols: critical review of the most recent advances." Environmental Chemistry 9, no. 3 (2012): 163. http://dx.doi.org/10.1071/en12052.

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Environmental contextAtmospheric aerosols have profound effects on the environment through several physicochemical processes, such as absorption and scattering of sunlight, heterogeneous gas–particle reactions and adverse effects on the respiratory and cardiovascular systems. Understanding aerosol atmospheric chemistry and its environmental impact requires comprehensive characterisation of the physical and chemical properties of particles. Results from mass spectrometry provide important new insights into the origin of atmospheric aerosols, the evolution of their physicochemical properties, th

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Hofer, Sabine, Norbert Hofstätter, Albert Duschl, and Martin Himly. "SARS-CoV-2-Laden Respiratory Aerosol Deposition in the Lung Alveolar-Interstitial Region Is a Potential Risk Factor for Severe Disease: A Modeling Study." Journal of Personalized Medicine 11, no. 5 (2021): 431. http://dx.doi.org/10.3390/jpm11050431.

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COVID-19, predominantly a mild disease, is associated with more severe clinical manifestation upon pulmonary involvement. Virion-laden aerosols and droplets target different anatomical sites for deposition. Compared to droplets, aerosols more readily advance into the peripheral lung. We performed in silico modeling to confirm the secondary pulmonary lobules as the primary site of disease initiation. By taking different anatomical aerosol origins into consideration and reflecting aerosols from exhalation maneuvers breathing and vocalization, the physicochemical properties of generated respirato

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Worton, D. R., A. H. Goldstein, D. K. Farmer, et al. "Origins and composition of fine atmospheric carbonaceous aerosol in the Sierra Nevada Mountains, California." Atmospheric Chemistry and Physics Discussions 11, no. 6 (2011): 17071–125. http://dx.doi.org/10.5194/acpd-11-17071-2011.

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Abstract. In this paper we report chemically resolved measurements of organic aerosol (OA) and related tracers during the Biosphere Effects on Aerosols and Photochemistry Experiment (BEARPEX) at the Blodgett Forest Research Station, California. OA contributed the majority of the mass to the fine atmospheric particles and was predominately oxygenated (OOA). The highest concentrations of OA were during sporadic wildfire influence when aged plumes were impacting the site. In situ measurements of particle phase molecular markers were dominated by secondary compounds and could be categorized into t

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Chrit, Mounir, Karine Sartelet, Jean Sciare, et al. "Modelling organic aerosol concentrations and properties during ChArMEx summer campaigns of 2012 and 2013 in the western Mediterranean region." Atmospheric Chemistry and Physics 17, no. 20 (2017): 12509–31. http://dx.doi.org/10.5194/acp-17-12509-2017.

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Abstract. In the framework of the Chemistry-Aerosol Mediterranean Experiment, a measurement site was set up at a remote site (Ersa) on Corsica Island in the northwestern Mediterranean Sea. Measurement campaigns performed during the summers of 2012 and 2013 showed high organic aerosol concentrations, mostly from biogenic origin. This work aims to represent the organic aerosol concentrations and properties (oxidation state and hydrophilicity) using the air-quality model Polyphemus with a surrogate approach for secondary organic aerosol (SOA) formation. Biogenic precursors are isoprene, monoterpe

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Worton, D. R., A. H. Goldstein, D. K. Farmer, et al. "Origins and composition of fine atmospheric carbonaceous aerosol in the Sierra Nevada Mountains, California." Atmospheric Chemistry and Physics 11, no. 19 (2011): 10219–41. http://dx.doi.org/10.5194/acp-11-10219-2011.

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Abstract. In this paper we report chemically resolved measurements of organic aerosol (OA) and related tracers during the Biosphere Effects on Aerosols and Photochemistry Experiment (BEARPEX) at the Blodgett Forest Research Station, California from 15 August–10 October 2007. OA contributed the majority of the mass to the fine atmospheric particles and was predominately oxygenated (OOA). The highest concentrations of OA were during sporadic wildfire influence when aged plumes were impacting the site. In situ measurements of particle phase molecular markers were dominated by secondary compounds

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Hsieh, W. C., W. D. Collins, Y. Liu, et al. "Climate response due to carbonaceous aerosols and aerosol-induced SST effects in NCAR community atmospheric model CAM3.5." Atmospheric Chemistry and Physics 13, no. 15 (2013): 7489–510. http://dx.doi.org/10.5194/acp-13-7489-2013.

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Abstract. This study used the Community Atmospheric Model 3.5 (CAM3.5) to investigate the effects of carbonaceous aerosols on climate. The simulations include control runs with 3 times the mass of carbonaceous aerosols as compared to the model's default carbonaceous aerosol mass, as well as no-carbon runs in which carbonaceous aerosols were removed. The slab ocean model (SOM) and the fixed sea surface temperature (SST) were used to examine effects of ocean boundary conditions. Throughout this study, climate response induced by aerosol forcing was mainly analyzed in the following three terms: (

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Shcherbakov, Valery, Olivier Jourdan, Christiane Voigt, et al. "Porous aerosol in degassing plumes of Mt. Etna and Mt. Stromboli." Atmospheric Chemistry and Physics 16, no. 18 (2016): 11883–97. http://dx.doi.org/10.5194/acp-16-11883-2016.

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Abstract. Aerosols of the volcanic degassing plumes from Mt. Etna and Mt. Stromboli were probed with in situ instruments on board the Deutsches Zentrum für Luft- und Raumfahrt research aircraft Falcon during the contrail, volcano, and cirrus experiment CONCERT in September 2011. Aerosol properties were analyzed using angular-scattering intensities and particle size distributions measured simultaneously with the Polar Nephelometer and the Forward Scattering Spectrometer probes (FSSP series 100 and 300), respectively. Aerosols of degassing plumes are characterized by low values of the asymmetry

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Hsieh, W. C., W. D. Collins, Y. Liu, et al. "Climate response due to carbonaceous aerosols and aerosol-induced SST effects in NCAR community atmospheric model CAM3.5." Atmospheric Chemistry and Physics Discussions 13, no. 3 (2013): 7349–96. http://dx.doi.org/10.5194/acpd-13-7349-2013.

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Abstract. This study used Community Atmospheric Model 3.5 (CAM3.5) to investigate the effects of carbonaceous aerosols on climate. The simulations include control runs with carbonaceous aerosols and no carbon runs in which carbonaceous aerosols were removed. The Slab Ocean Model (SOM) and the fixed Sea Surface Temperature (SST) were used to examine effects of ocean boundary conditions. Throughout this study, climate response induced by aerosol forcing was mainly analyzed in the following three terms: (1) aerosol radiative effects under fixed SST, (2) effects of aerosol-induced SST feedbacks ,

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de Oliveira, Aline M., Cristina T. Souza, Nara P. M. de Oliveira, et al. "Analysis of Atmospheric Aerosol Optical Properties in the Northeast Brazilian Atmosphere with Remote Sensing Data from MODIS and CALIOP/CALIPSO Satellites, AERONET Photometers and a Ground-Based Lidar." Atmosphere 10, no. 10 (2019): 594. http://dx.doi.org/10.3390/atmos10100594.

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A 12-year analysis, from 2005 to 2016, of atmospheric aerosol optical properties focusing for the first time on Northeast Brazil (NEB) was performed based on four different remote sensing datasets: the Moderate Resolution Imaging Spectroradiometer (MODIS), the Aerosol Robotic Network (AERONET), the Cloud-Aerosol LIDAR with Orthogonal Polarization (CALIOP) and a ground-based Lidar from Natal. We evaluated and identified distinct aerosol types, considering Aerosol Optical Depth (AOD) and Angström Exponent (AE). All analyses show that over the NEB, a low aerosol scenario prevails, while there are

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Saito, Y., K. Shiraishi, A. Nishimura, T. Kirinaka, Y. Sakurai, and T. Tomida. "Fluorescence Database of Aerosol-Candidate-Substances for Fluorescence Lidar Application." EPJ Web of Conferences 237 (2020): 07016. http://dx.doi.org/10.1051/epjconf/202023707016.

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A database containing spectrum and cross-section of the fluorescence of substances has been made. In test of forest environment monitoring by our Laser-Induced Fluorescence Spectrum (LIFS) lidar, the database showed that the origin substance of the aerosol observed by the lidar was cedar pollen, and the concentration was calculated using the cross-section. In the urban atmosphere monitoring, three substances stored in the database were proposed to be the origins of the aerosol. Based on these experiments, we discuss the usefulness of the fluorescence database in lidar observations.

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KUMAR, B., B. P. SINGH, P. CHANDRA, A. YADAV, V. SINGH, and J. MASIH. "SEASONAL VARIATION OF AEROSOL DISTRIBUTION AND OPTICAL DEPTH OVER INDO-GANGETIC BELT." Meteorologiya i Gidrologiya, no. 10 (October 2024): 78–87. https://doi.org/10.52002/0130-2906-2024-10-78-87.

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Rapid industrialization, urbanization, and synoptic conditions have posed serious environmental concerns in South Asian countries, especially in the most densely populated region of the Indo-Gangetic Belt (IGB) in the last few years. In this paper, the authors are trying to show the aerosol optical depth (AOD) variation within the Indo-Gangetic Belt region from 2007 to 2012 to reveal a relationship between regional climate change and air quality. The present study is based on the online data from the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) mission. In winter

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Takahama, S., R. E. Schwartz, L. M. Russell, A. M. Macdonald, S. Sharma, and W. R. Leaitch. "Organic functional groups in aerosol particles from burning and non-burning forest emissions at a high-elevation mountain site." Atmospheric Chemistry and Physics 11, no. 13 (2011): 6367–86. http://dx.doi.org/10.5194/acp-11-6367-2011.

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Abstract. Ambient particles collected on teflon filters at the Peak of Whistler Mountain, British Columbia (2182 m a.s.l.) during spring and summer 2009 were measured by Fourier transform infrared (FTIR) spectroscopy for organic functional groups (OFG). The project mean and standard deviation of organic aerosol mass concentrations (OM) for all samples was 3.2±3.3 (μg m−3). Measurements of aerosol mass fragments, size, and number concentrations were used to separate fossil-fuel combustion and burning and non-burning forest sources of the measured organic aerosol. The OM was composed of the same

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Cazorla, A., R. Bahadur, K. J. Suski, et al. "Relating aerosol absorption due to soot, organic carbon, and dust to emission sources determined from in-situ chemical measurements." Atmospheric Chemistry and Physics Discussions 13, no. 2 (2013): 3451–83. http://dx.doi.org/10.5194/acpd-13-3451-2013.

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Abstract. Estimating the aerosol contribution to the global or regional radiative forcing can take advantage of the relationship between the spectral aerosol optical properties and the size and chemical composition of aerosol. Long term global optical measurements from observational networks or satellites can be used in such studies. Using in-situ chemical mixing state measurements can help us to constrain the limitations of such estimates. In this study, the Absorption Ångström Exponent (AAE) and the Scattering Ångström Exponent (SAE) derived from 10 operational AERONET sites in California ar

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Cazorla, A., R. Bahadur, K. J. Suski, et al. "Relating aerosol absorption due to soot, organic carbon, and dust to emission sources determined from in-situ chemical measurements." Atmospheric Chemistry and Physics 13, no. 18 (2013): 9337–50. http://dx.doi.org/10.5194/acp-13-9337-2013.

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Abstract. Estimating the aerosol contribution to the global or regional radiative forcing can take advantage of the relationship between the spectral aerosol optical properties and the size and chemical composition of aerosol. Long term global optical measurements from observational networks or satellites can be used in such studies. Using in-situ chemical mixing state measurements can help us to constrain the limitations of such estimates. In this study, the Absorption Ångström Exponent (AAE) and the Scattering Ångström Exponent (SAE) derived from 10 operational AERONET sites in California ar

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Ulke, Ana G. "Influence of Regional Transport Mechanisms on the Fingerprint of Biomass-Burning Aerosols in Buenos Aires." Advances in Meteorology 2019 (December 29, 2019): 1–13. http://dx.doi.org/10.1155/2019/6792161.

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The study focuses on the transport of aerosol particles resulting from biomass burning in central South America towards the megacity of Buenos Aires by the South American Low-Level Jet. In particular, the cases are studied in which the exit area of the Jet reaches the La Plata Basin with no precipitation associated, herein called Chaco Jet 1 (CJ1), which could remove aerosols from the atmosphere on their way towards the city. CJ1 events registered within the five-year period of 2001–2005 are examined along with changes in the optical properties of aerosols over the city from measurements from

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Gallo, Francesca, Janek Uin, Kevin J. Sanchez, et al. "Long-range transported continental aerosol in the eastern North Atlantic: three multiday event regimes influence cloud condensation nuclei." Atmospheric Chemistry and Physics 23, no. 7 (2023): 4221–46. http://dx.doi.org/10.5194/acp-23-4221-2023.

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Abstract. The eastern North Atlantic (ENA) is a region dominated by pristine marine environment and subtropical marine boundary layer clouds. Under unperturbed atmospheric conditions, the regional aerosol regime in the ENA varies seasonally due to different seasonal surface-ocean biogenic emissions, removal processes, and meteorological regimes. However, during periods when the marine boundary layer aerosol in the ENA is impacted by particles transported from continental sources, aerosol properties within the marine boundary layer change significantly, affecting the concentration of cloud cond

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Sheoran, Rahul, Umesh Chandra Dumka, Dimitris G. Kaskaoutis, et al. "Chemical Composition and Source Apportionment of Total Suspended Particulate in the Central Himalayan Region." Atmosphere 12, no. 9 (2021): 1228. http://dx.doi.org/10.3390/atmos12091228.

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The present study analyzes data from total suspended particulate (TSP) samples collected during 3 years (2005–2008) at Nainital, central Himalayas, India and analyzed for carbonaceous aerosols (organic carbon (OC) and elemental carbon (EC)) and inorganic species, focusing on the assessment of primary and secondary organic carbon contributions (POC, SOC, respectively) and on source apportionment by positive matrix factorization (PMF). An average TSP concentration of 69.6 ± 51.8 µg m−3 was found, exhibiting a pre-monsoon (March–May) maximum (92.9 ± 48.5 µg m−3) due to dust transport and forest f

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Gobbi, G. P., F. Angelini, P. Bonasoni, G. P. Verza, A. Marinoni, and F. Barnaba. "Sunphotometry of the 2006–2007 aerosol optical/radiative properties at the Himalayan Nepal Climate Observatory-Pyramid (5079 m a.s.l.)." Atmospheric Chemistry and Physics 10, no. 22 (2010): 11209–21. http://dx.doi.org/10.5194/acp-10-11209-2010.

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Abstract. In spite of being located at the heart of the highest mountain range in the world, the Himalayan Nepal Climate Observatory (5079 m a.s.l.) at the Ev-K2-CNR Pyramid is shown to be affected by the advection of pollution aerosols from the populated regions of southern Nepal and the Indo-Gangetic plains. Such an impact is observed along most of the period April 2006–March 2007 addressed here, with a minimum in the monsoon season. Backtrajectory-analysis indicates long-range transport episodes occurring in this year to originate mainly in the west Asian deserts. At this high altitude site

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Law, Katharine S., Andreas Stohl, Patricia K. Quinn, et al. "Arctic Air Pollution: New Insights from POLARCAT-IPY." Bulletin of the American Meteorological Society 95, no. 12 (2014): 1873–95. http://dx.doi.org/10.1175/bams-d-13-00017.1.

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Given the rapid nature of climate change occurring in the Arctic and the difficulty climate models have in quantitatively reproducing observed changes such as sea ice loss, it is important to improve understanding of the processes leading to climate change in this region, including the role of short-lived climate pollutants such as aerosols and ozone. It has long been known that pollution produced from emissions at midlatitudes can be transported to the Arctic, resulting in a winter/spring aerosol maximum known as Arctic haze. However, many uncertainties remain about the composition and origin

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Mancinelli, Enrico, Giorgio Passerini, Simone Virgili, and Umberto Rizza. "Multi-Decadal Trends in Aerosol Optical Depth of the Main Aerosol Species Based on MERRA-2 Reanalysis: A Case Study in the Baltic Sea Basin." Remote Sensing 16, no. 13 (2024): 2421. http://dx.doi.org/10.3390/rs16132421.

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This study analyses the trends of total aerosol and the main aerosol species over nine capitals in the Baltic Sea basin from 1989 to 2019 based on the Modern-Era Retrospective Analysis for Research and Applications, Version 2 Reanalysis. Aerosol speciation includes mineral dust, sea salt, sulphate (SO4), organic carbon (OC), and black carbon (BC). The mean total aerosol optical depth (AOD) values were the highest (up to 0.216) over the continental capitals (i.e., Warsaw, Berlin, and Vilnius). For each capital, the mean SO4 AOD was the main aerosol species, with a trend specular to total AOD. A

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Hara, Keiichiro, Chiharu Nishita-Hara, Kazuo Osada, Masanori Yabuki, and Takashi Yamanouchi. "Characterization of aerosol number size distributions and their effect on cloud properties at Syowa Station, Antarctica." Atmospheric Chemistry and Physics 21, no. 15 (2021): 12155–72. http://dx.doi.org/10.5194/acp-21-12155-2021.

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Abstract. We took aerosol measurements at Syowa Station, Antarctica, to characterize the aerosol number–size distribution and other aerosol physicochemical properties in 2004–2006. Four modal structures (i.e., mono-, bi-, tri-, and quad-modal) were identified in aerosol size distributions during measurements. Particularly, tri-modal and quad-modal structures were associated closely with new particle formation (NPF). To elucidate where NPF proceeds in the Antarctic, we compared the aerosol size distributions and modal structures to air mass origins computed using backward trajectory analysis. R

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Chazette, Patrick, Julien Totems, and Xiaoxia Shang. "Transport of aerosols over the French Riviera – link between ground-based lidar and spaceborne observations." Atmospheric Chemistry and Physics 19, no. 6 (2019): 3885–904. http://dx.doi.org/10.5194/acp-19-3885-2019.

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Abstract. For the first time, a 355 nm backscatter N2-Raman lidar has been deployed on the western part of the French Riviera to investigate the vertical aerosol structure in the troposphere. This lidar system, based at the AERONET site of Toulon–La Garde, performed continuous measurements from 24 June to 17 July 2014, within the framework of the multidisciplinary program Mediterranean Integrated Studies at the Regional and Local Scales (MISTRALS). By coupling these observations with those of the spaceborne instruments Cloud-Aerosol LIdar with Orthogonal Polarization (CALIOP), Spinning Enhance

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Moschos, Vaios, Julia Schmale, Wenche Aas, et al. "Elucidating the present-day chemical composition, seasonality and source regions of climate-relevant aerosols across the Arctic land surface." Environmental Research Letters 17, no. 3 (2022): 034032. http://dx.doi.org/10.1088/1748-9326/ac444b.

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Abstract The Arctic is warming two to three times faster than the global average, and the role of aerosols is not well constrained. Aerosol number concentrations can be very low in remote environments, rendering local cloud radiative properties highly sensitive to available aerosol. The composition and sources of the climate-relevant aerosols, affecting Arctic cloud formation and altering their microphysics, remain largely elusive due to a lack of harmonized concurrent multi-component, multi-site, and multi-season observations. Here, we present a dataset on the overall chemical composition and

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Samaranayake, Lakshman. "COVID-19 and Dentistry: Aerosol and Droplet Transmission of SARS-CoV-2, and Its Infectivity in Clinical Settings." Dental Update 47, no. 7 (2020): 600–602. http://dx.doi.org/10.12968/denu.2020.47.7.600.

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In the last inaugural issue of the Commentary we discussed the origins of the SARS-CoV-2, the probable reasons for its emergence, and how the virus spreads due to the rapid, inter-continental, mass transportation, as well as the human behaviour leading to deforestation and massive urbanization and environmental changes. Here, we outline the issues surrounding infectivity of the SARS-CoV-2, plus its spread through aerosols, droplets and aerosol generating procedures (AGPs) in the dental clinic milieu, as well as its viability in the ambient environment.

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Zabukovec, Antonin, Gerard Ancellet, Iwan E. Penner, et al. "Characterization of Aerosol Sources and Optical Properties in Siberia Using Airborne and Spaceborne Observations." Atmosphere 12, no. 2 (2021): 244. http://dx.doi.org/10.3390/atmos12020244.

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Airborne backscatter lidar at 532 nm and in-situ measurements of black carbon (BC), carbon monoxide excess above background (ΔCO), and aerosol size distribution were carried out over Siberia in July 2013 and June 2017 in order to sample several kinds of aerosol sources. Aerosol types are derived using the Lagrangian FLEXible PARTicle dispersion model (FLEXPART) simulations and satellite observations. Six aerosol types could be identified in this work: (i) dusty aerosol mixture, (ii) Ob valley gas flaring emission, (iii) fresh forest fire, (iv) aged forest fire, (v) urban emissions over the Tom

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Hansen, J., M. Sato, P. Kharecha, and K. von Schuckmann. "Earth's energy imbalance and implications." Atmospheric Chemistry and Physics 11, no. 24 (2011): 13421–49. http://dx.doi.org/10.5194/acp-11-13421-2011.

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Abstract. Improving observations of ocean heat content show that Earth is absorbing more energy from the Sun than it is radiating to space as heat, even during the recent solar minimum. The inferred planetary energy imbalance, 0.58 ± 0.15 W m−2 during the 6-yr period 2005–2010, confirms the dominant role of the human-made greenhouse effect in driving global climate change. Observed surface temperature change and ocean heat gain together constrain the net climate forcing and ocean mixing rates. We conclude that most climate models mix heat too efficiently into the deep ocean and as a result und

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Toledano, C., V. E. Cachorro, A. M. de Frutos, et al. "Airmass Classification and Analysis of Aerosol Types at El Arenosillo (Spain)." Journal of Applied Meteorology and Climatology 48, no. 5 (2009): 962–81. http://dx.doi.org/10.1175/2008jamc2006.1.

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Abstract The Aerosol Robotic Network (AERONET) site “El Arenosillo,” equipped with a Cimel sun photometer, has been in operation since 2000. The data collected there are analyzed to establish an aerosol synoptic climatological description that is representative of the region. Different air masses and aerosol types are present over the site depending on the synoptic conditions. The frequent intrusion of dust from the Sahara Desert at El Arenosillo suggested the use of back trajectories to determine the airmass origins of other types of aerosol observed there. The focus of this study is to class

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Petit, Jean-Eudes, Cyril Pallarès, Olivier Favez, Laurent Y. Alleman, Nicolas Bonnaire, and Emmanuel Rivière. "Sources and Geographical Origins of PM10 in Metz (France) Using Oxalate as a Marker of Secondary Organic Aerosols by Positive Matrix Factorization Analysis." Atmosphere 10, no. 7 (2019): 370. http://dx.doi.org/10.3390/atmos10070370.

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An original source apportionment study was conducted on atmospheric particles (PM10) collected in Metz, one of the largest cities of Eastern France. A Positive matrix factorization (PMF) analysis was applied to a sampling filter-based chemical dataset obtained for the April 2015 to January 2017 period. Nine factors were clearly identified, showing mainly contributions from anthropogenic sources of primary PM (19.2% and 16.1% for traffic and biomass burning, respectively) as well as secondary aerosols (12.3%, 14.5%, 21.8% for sulfate-, nitrate-, and oxalate-rich factors, respectively). Wood-bur

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Dupuy, R., P. Laj, and K. Sellegri. "Cn to ccn relationships and cloud microphysical properties in different air masses at a free tropospheric site." Atmospheric Chemistry and Physics Discussions 6, no. 1 (2006): 879–98. http://dx.doi.org/10.5194/acpd-6-879-2006.

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Abstract. The fraction of aerosol particles activated to droplets (CCN) is often derived from semi-empirical relationships that commonly tend to overestimate droplet number concentration leading to major uncertainties in global climate models. One of the difficulties in relating aerosol concentration to cloud microphysics and cloud albedo lies in the necessity of working at a constant liquid water path (LWP), which is very difficult to control. In this study we observed the relationships between aerosol number concentration (NCN), cloud droplet concentration (Nd) and effective radius (Reff), a

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Lachlan-Cope, Thomas, David C. S. Beddows, Neil Brough, et al. "On the annual variability of Antarctic aerosol size distributions at Halley Research Station." Atmospheric Chemistry and Physics 20, no. 7 (2020): 4461–76. http://dx.doi.org/10.5194/acp-20-4461-2020.

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Abstract. The Southern Ocean and Antarctic region currently best represent one of the few places left on our planet with conditions similar to the preindustrial age. Currently, climate models have a low ability to simulate conditions forming the aerosol baseline; a major uncertainty comes from the lack of understanding of aerosol size distributions and their dynamics. Contrasting studies stress that primary sea salt aerosol can contribute significantly to the aerosol population, challenging the concept of climate biogenic regulation by new particle formation (NPF) from dimethyl sulfide marine

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Fomba, K. W., D. van Pinxteren, K. Müller, et al. "Trace metal characterization of aerosol particles and cloud water during HCCT 2010." Atmospheric Chemistry and Physics Discussions 15, no. 7 (2015): 10899–938. http://dx.doi.org/10.5194/acpd-15-10899-2015.

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Abstract. Trace metal characterization of bulk and size resolved aerosol and cloud water samples were performed during the Hill Cap Cloud Thuringia (HCCT) campaign. Cloud water was collected at the top of Mt. Schmücke while aerosol samples were collected at two stations upwind and downwind of Mt. Schmücke. Fourteen trace metals including Ti, V, Fe, Mn, Co, Zn, Ni, Cu, As, Sr, Rb, Pb, Cr, and Se were investigated during four full cloud events (FCE) that fulfilled the conditions of a continuous air mass flow through the three stations. Aerosol particle trace metal concentrations were found to be

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Fomba, K. W., D. van Pinxteren, K. Müller, et al. "Trace metal characterization of aerosol particles and cloud water during HCCT 2010." Atmospheric Chemistry and Physics 15, no. 15 (2015): 8751–65. http://dx.doi.org/10.5194/acp-15-8751-2015.

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Abstract. Trace metal characterization of bulk and size-resolved aerosol and cloud water samples were performed during the Hill Cap Cloud Thuringia (HCCT) campaign. Cloud water was collected at the top of Mt. Schmücke while aerosol samples were collected at two stations upwind and downwind of Mt. Schmücke. Fourteen trace metals including Ti, V, Fe, Mn, Co, Zn, Ni, Cu, As, Sr, Rb, Pb, Cr, and Se were investigated during four full cloud events (FCEs) that fulfilled the conditions of a continuous air mass flow through the three stations. Aerosol particle trace metal concentrations were found to b

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Gerding, M., G. Baumgarten, U. Blum, et al. "Observation of an unusual mid-stratospheric aerosol layer in the Arctic: possible sources and implications for polar vortex dynamics." Annales Geophysicae 21, no. 4 (2003): 1057–69. http://dx.doi.org/10.5194/angeo-21-1057-2003.

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Abstract. By the beginning of winter 2000/2001, a mysterious stratospheric aerosol layer had been detected by four different Arctic lidar stations. The aerosol layer was observed first on 16 November 2000, at an altitude of about 38 km near Søndre Strømfjord, Greenland (67° N, 51° W) and on 19 November 2000, near Andenes, Norway (69° N, 16° E). Subsequently, in early December 2000, the aerosol layer was observed near Kiruna, Sweden (68° N, 21° E) and Ny-Ålesund, Spitsbergen (79° N, 12° E). No mid-latitude lidar station observed the presence of aerosols in this altitude region. The layer persis

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Velazquez-Garcia, Alejandra, Joel F. de Brito, Suzanne Crumeyrolle, Isabelle Chiapello, and Véronique Riffault. "Assessment of light-absorbing carbonaceous aerosol origins and properties at the ATOLL site in northern France." Aerosol Research 2, no. 1 (2024): 107–22. http://dx.doi.org/10.5194/ar-2-107-2024.

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Abstract. Understanding the lifecycle of light-absorbing carbonaceous aerosols, from emission to deposition, is critical for assessing their climate impact. This study integrated multi-year aerosol observations from the ATOLL (ATmospheric Observations in liLLe, northern France) platform, with air mass back trajectories and emission inventory as a newly developed “INTERPLAY” (IN-siTu obsERvations, hysPLit, And emission inventorY) approach. Applied to black carbon (BC), the method apportioned source contributions (shipping, vehicular, residential heating, industrial) and studied aerosol aging ef

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Nemuc, A., J. Vasilescu, C. Talianu, L. Belegante, and D. Nicolae. "Assessment of aerosol's mass concentrations from measured linear particle depolarization ratio (vertically resolved) and simulations." Atmospheric Measurement Techniques 6, no. 11 (2013): 3243–55. http://dx.doi.org/10.5194/amt-6-3243-2013.

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Abstract. Multi-wavelength depolarization Raman lidar measurements from Magurele, Romania are used in this study along with simulated mass-extinction efficiencies to calculate the mass concentration profiles of different atmospheric components, due to their different depolarization contribution to the 532 nm backscatter coefficient. Linear particle depolarization ratio (δpart) was computed using the relative amplification factor and the system-dependent molecular depolarization. The low depolarizing component was considered as urban/smoke, with a mean δpart of 3%, while for the high depolarizi

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Nemuc, A., J. Vasilescu, C. Talianu, L. Belegante, and D. Nicolae. "Assessment of aerosol's mass concentrations from measured linear particle depolarization ratio (vertically resolved) and simulations." Atmospheric Measurement Techniques Discussions 6, no. 3 (2013): 5923–57. http://dx.doi.org/10.5194/amtd-6-5923-2013.

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Abstract. Multiwavelength depolarization Raman lidar measurements from Magurele, Romania are used in this study along with simulated mass-extinction efficiencies to calculate the mass concentrations profiles of different atmospheric components, due to their different depolarization contribution to the 532 nm backscatter coefficient. Linear particle depolarization ratio (δpart) was computed using the relative amplification factor and the system-dependent molecular depolarization. The low depolarizing component was considered as urban/smoke, with a mean δpart of 3%, while for the high depolarizi

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Mei, Fan, Jian Wang, Shan Zhou, Qi Zhang, Sonya Collier, and Jianzhong Xu. "Measurement report: Cloud condensation nuclei activity and its variation with organic oxidation level and volatility observed during an aerosol life cycle intensive operational period (ALC-IOP)." Atmospheric Chemistry and Physics 21, no. 17 (2021): 13019–29. http://dx.doi.org/10.5194/acp-21-13019-2021.

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Abstract. Cloud condensation nuclei (CCN) spectrum and the CCN activated fraction of size-resolved aerosols (SR-CCN) were measured at a rural site on Long Island during the Department of Energy (DOE) aerosol life cycle intensive operational period (ALC-IOP) from 15 July to 15 August 2011. During the last week of the ALC-IOP, the dependence of the activated fraction on aerosol volatility was characterized by sampling downstream of a thermodenuder (TD) operated at temperatures up to 100 ∘C. Here we present aerosol properties, including aerosol total number concentration, CCN spectrum, and the CC

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Diesch, J. M., F. Drewnick, S. R. Zorn, S. L. von der Weiden-Reinmüller, M. Martinez, and S. Borrmann. "Variability of aerosol, gaseous pollutants and meteorological characteristics associated with changes in air mass origin at the SW Atlantic coast of Iberia." Atmospheric Chemistry and Physics 12, no. 8 (2012): 3761–82. http://dx.doi.org/10.5194/acp-12-3761-2012.

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Abstract. Measurements of the ambient aerosol were performed at the Southern coast of Spain, within the framework of the DOMINO (Diel Oxidant Mechanisms In relation to Nitrogen Oxides) project. The field campaign took place from 20 November until 9 December 2008 at the atmospheric research station "El Arenosillo" (37°5'47.76" N, 6°44'6.94" W). As the monitoring station is located at the interface between a natural park, industrial cities (Huelva, Seville) and the Atlantic Ocean, a variety of physical and chemical parameters of aerosols and gas phase could be characterized in dependency on the

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Fuchs, Julia, Jan Cermak, and Hendrik Andersen. "Building a cloud in the southeast Atlantic: understanding low-cloud controls based on satellite observations with machine learning." Atmospheric Chemistry and Physics 18, no. 22 (2018): 16537–52. http://dx.doi.org/10.5194/acp-18-16537-2018.

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Abstract. Understanding the processes that determine low-cloud properties and aerosol–cloud interactions (ACIs) is crucial for the estimation of their radiative effects. However, the covariation of meteorology and aerosols complicates the determination of cloud-relevant influences and the quantification of the aerosol–cloud relation. This study identifies and analyzes sensitivities of cloud fraction and cloud droplet effective radius to their meteorological and aerosol environment in the atmospherically stable southeast Atlantic during the biomass-burning season based on an 8-day-averaged data

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Mogo, S., V. E. Cachorro, J. F. Lopez, et al. "In situ measurements of aerosols optical properties and number size distributions in a subarctic coastal region of Norway." Atmospheric Chemistry and Physics Discussions 11, no. 12 (2011): 32921–64. http://dx.doi.org/10.5194/acpd-11-32921-2011.

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Abstract. In situ measurements of aerosol optical properties were made in the summer of 2008 at the ALOMAR station facility (69°16 N, 16°00 E), located at a rural site in the north of the island of Andøya (Vesterålen archipelago), approximately 300 km north of the Arctic Circle. The extended three-month campaign was part of the POLARCAT Project (Polar Study using Aircraft, Remote Sensing, Surface Measurements and Models, of Climate, Chemistry, Aerosols, and Transport) of the International Polar Year (IPY-2007-2008). Its goal was to characterize the aerosols of this sub-Arctic area, which are f

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Han, Deming, Qingyan Fu, Song Gao, et al. "Non-polar organic compounds in autumn and winter aerosols in a typical city of eastern China: size distribution and impact of gas–particle partitioning on PM<sub>2.5</sub> source apportionment." Atmospheric Chemistry and Physics 18, no. 13 (2018): 9375–91. http://dx.doi.org/10.5194/acp-18-9375-2018.

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Abstract. Aerosol-associated non-polar organic compounds (NPOCs), including 15 polycyclic aromatic hydrocarbons (PAHs), 30 n-alkanes, 2 iso-alkanes, 5 hopanes and 5 steranes, were identified and quantified in PM2.5 samples using the thermal desorption–gas chromatography–mass spectrometry (TD–GC–MS) method. The samples were mainly collected in autumn and winter in a typical city of eastern China. The total concentrations of NPOCs were 31.7–388.7 ng m−3, and n-alkanes were the most abundant species (67.2 %). The heavy-molecular-weight PAHs (four- and five-ring) contributed 67.9 % of the total PA

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Foskinis, Romanos, Ghislain Motos, Maria I. Gini, et al. "Drivers of droplet formation in east Mediterranean orographic clouds." Atmospheric Chemistry and Physics 24, no. 17 (2024): 9827–42. http://dx.doi.org/10.5194/acp-24-9827-2024.

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Abstract. The purpose of this study is to understand the drivers of cloud droplet formation in orographic clouds. We used a combination of modeling, in situ, and remote sensing measurements at the high-altitude Helmos Hellenic Atmospheric Aerosol and Climate Change ((HAC)2) station, which is located at the top of Mt. Helmos (1314 m above sea level), Greece, during the Cloud–AerosoL InteractionS in the Helmos Background TropOsphere (CALISHTO) campaign in fall 2021 (https://calishto.panacea-ri.gr/, last access: 1 August 2024) to examine the origins of the aerosols (i.e., local aerosol from the p

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Jang, Kyoung-Soon, A. Young Choi, Mira Choi, Hyunju Kang, Tae-Wook Kim, and Ki-Tae Park. "Size-Segregated Chemical Compositions of HULISs in Ambient Aerosols Collected during the Winter Season in Songdo, South Korea." Atmosphere 10, no. 4 (2019): 226. http://dx.doi.org/10.3390/atmos10040226.

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The primary objective of this study was to investigate the molecular compositions of humic-like substances (HULISs) in size-resolved ambient aerosols, which were collected using an Anderson-type air sampler (eight size cuts between 0.43 and 11 μm) during the winter season (i.e., the heating period of 8–12 January 2018) in Songdo, South Korea. The aerosol samples collected during the pre- (preheating, 27 November–1 December 2017) and post-winter (postheating, 12–16 March 2018) periods were used as controls for the winter season samples. According to the concentrations of the chromophoric organi

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Dall'Osto, M., and R. M. Harrison. "Urban organic aerosols measured by single particle mass spectrometry in the megacity of London." Atmospheric Chemistry and Physics 12, no. 9 (2012): 4127–42. http://dx.doi.org/10.5194/acp-12-4127-2012.

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Abstract. During the month of October 2006, as part of the REPARTEE-I experiment (Regent's Park and Tower Environmental Experiment) an Aerosol Time-Of-Flight Mass Spectrometer (ATOFMS) was deployed at an urban background location in the city of London, UK. Fifteen particle types were classified, some of which were already discussed (Dall'Osto et al., 2009a,b; Harrison et al., 2012). In this manuscript the origins and properties of four unreported particle types postulated to be due to locally generated aerosols, independent of the air mass type advected into London, are examined. One particle

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Bressi, M., J. Sciare, V. Ghersi, et al. "Sources and geographical origins of fine aerosols in Paris (France)." Atmospheric Chemistry and Physics 14, no. 16 (2014): 8813–39. http://dx.doi.org/10.5194/acp-14-8813-2014.

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Abstract. The present study aims at identifying and apportioning fine aerosols to their major sources in Paris (France) – the second most populated "larger urban zone" in Europe – and determining their geographical origins. It is based on the daily chemical composition of PM2.5 examined over 1 year at an urban background site of Paris (Bressi et al., 2013). Positive matrix factorization (EPA PMF3.0) was used to identify and apportion fine aerosols to their sources; bootstrapping was performed to determine the adequate number of PMF factors, and statistics (root mean square error, coefficient o

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Val Martin, M., C. L. Heald, B. Ford, A. J. Prenni, and C. Wiedinmyer. "A decadal satellite analysis of the origins and impacts of smoke in Colorado." Atmospheric Chemistry and Physics Discussions 13, no. 3 (2013): 8233–60. http://dx.doi.org/10.5194/acpd-13-8233-2013.

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Abstract. We analyze the record of aerosol optical depth (AOD) measured by the MODerate resolution Imaging Spectroradiometer (MODIS) aboard the Terra satellite in combination with surface PM2.5 to investigate the impact of fires on aerosol loading and air quality over Colorado from 2000 to 2012, and to evaluate the contribution of local versus transported smoke. Fire smoke contributed significantly to the AOD levels observed over Colorado. During the worst fire seasons of 2002 and 2012, average MODIS AOD over the Colorado Front Range corridor were 20–50% larger than the other 11 yr studied. Su

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