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Atmospheric Chemistry and Physics
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5.67
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Published on Jul 18, 2019in Atmospheric Chemistry and Physics 5.67
Holger Baars19
Estimated H-index: 19
(Leibniz Association),
Albert Ansmann52
Estimated H-index: 52
(Leibniz Association)
+ 60 AuthorsArtur Szkop3
Estimated H-index: 3
(PAN: Polish Academy of Sciences)
Abstract. Six months of stratospheric aerosol observations with the European Aerosol Research Lidar Network (EARLINET) from August 2017 to January 2018 are presented. The decay phase of an unprecedented, record-breaking stratospheric perturbation caused by wild fire smoke is reported and discussed in terms of geometrical, optical, and microphysical aerosol properties. Enormous amounts of smoke (mainly soot particles) were injected into the upper troposphere and lower stratosphere over fire areas...
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Published on Jul 18, 2019in Atmospheric Chemistry and Physics 5.67
Pascal Polonik (LMU: Ludwig Maximilian University of Munich), Christoph Knote19
Estimated H-index: 19
(LMU: Ludwig Maximilian University of Munich)
+ 15 AuthorsChristoph Mahnke (MPG: Max Planck Society)
Abstract. The realistic representation of cloud-aerosol interactions is of primary importance for accurate climate model projections. The investigation of these interactions in strongly contrasting clean and polluted atmospheric conditions in the Amazon area has been one of the motivations for several field observations, including the airborne Aerosol, Cloud, Precipitation, and Radiation Interactions and DynamIcs of CONvective cloud systems – Cloud Processes of the Main Precipitation Systems in ...
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Published on Jul 17, 2019in Atmospheric Chemistry and Physics 5.67
Jan Chylik (University of Cologne), S. Mertes23
Estimated H-index: 23
(Leibniz Association),
R. A. J. Neggers18
Estimated H-index: 18
(University of Cologne)
Abstract. Impacts of aerosol on mixed-phase cloud evolution play a potentially important role in Arctic climate, but remain poorly understood. The way in which aerosol, clouds and turbulence interact, is speculated to significantly modify the cloud evolution. There has been an increasing number of field observations of the ice clouds in Arctic, however it has proven hard to gain insight into these complex interactions using measurements alone. This model study aims to help filling this gap in th...
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Published on Jul 17, 2019in Atmospheric Chemistry and Physics 5.67
Meredith Schervish1
Estimated H-index: 1
(CMU: Carnegie Mellon University),
Neil M. Donahue70
Estimated H-index: 70
(CMU: Carnegie Mellon University)
Abstract. Gas-phase auto-oxidation of organics can generate highly-oxygenated organic molecules (HOMs) and thus increase secondary organic aerosol production and enable new-particle formation. Here we present a new implementation of the Volatility Basis Set (VBS) that explicitly resolves peroxy radicals (RO 2 ) formed via auto-oxidation. The model includes a strong temperature dependence for auto oxidation as well as explicit termination of RO 2 , including reactions with NO, HO 2 , and other RO...
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Published on Jul 17, 2019in Atmospheric Chemistry and Physics 5.67
David R. Hanson36
Estimated H-index: 36
(Augsburg College),
Hussein Abdullahi (Augsburg College)+ 3 AuthorsJoan C. Kunz2
Estimated H-index: 2
(Augsburg College)
Abstract. Size distributions of particles formed from sulfuric acid ( H 2 SO 4 ) and water vapor in a photolytic flow reactor (PhoFR) were measured with a nanoparticle mobility sizing system. Experiments with added ammonia and dimethylamine were also performed. H 2 SO 4(g) was synthesized from HONO, sulfur dioxide and water vapor, initiating OH oxidation by HONO photolysis. Experiments were performed at 296 K over a range of sulfuric acid production levels and for 16 % to 82 % relative humidity....
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Published on Jul 17, 2019in Atmospheric Chemistry and Physics 5.67
Thibaud M. Fritz (MIT: Massachusetts Institute of Technology), Sebastian D. Eastham8
Estimated H-index: 8
(MIT: Massachusetts Institute of Technology)
+ 1 AuthorsSteven R.H. Barrett26
Estimated H-index: 26
(MIT: Massachusetts Institute of Technology)
Abstract. Emissions from aircraft engines contribute to atmospheric NO x , driving changes in both the climate and in surface air quality. Existing atmospheric models typically assume instant dilution of emissions into large-scale grid cells, neglecting non-linear, small-scale processes occurring in aircraft wakes. They also do not explicitly simulate the formation of ice crystals, which could drive local chemical processing. This assumption may lead to errors in estimates of aircraft-attributab...
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Published on Jul 17, 2019in Atmospheric Chemistry and Physics 5.67
Rayonil Carneiro (INPE: National Institute for Space Research), Gilberto Fisch18
Estimated H-index: 18
Abstract. The Amazon biome contains more than half of the remaining tropical forests of the planet and has a strong impact on aspects of meteorology such as the Planetary Boundary Layer (PBL). In this context, the objective of this study was to conduct observational evaluations of the daily cycle of the height of the PLB during its stable (night) and convective (day) phases from data that were measured and/or estimated using instruments such as a radiosonde, SODAR, ceilometer, wind profiler, Lid...
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Published on Jul 17, 2019in Atmospheric Chemistry and Physics 5.67
Laura Wilcox15
Estimated H-index: 15
(University of Reading),
Nick Dunstone23
Estimated H-index: 23
(Met Office)
+ 3 AuthorsEleanor J. Highwood34
Estimated H-index: 34
(University of Reading)
Abstract. Asian emissions of anthropogenic aerosols and their precursors have increased rapidly since 1980, with half of the increase since the pre-industrial era occurring in this period. Transient experiments with the HadGEM3-GC2 coupled model were designed to isolate the impact of Asian anthropogenic aerosols on global climate in boreal winter. It is found that this increase has resulted in local circulation changes, which in turn have driven decreases in precipitation over China, alongside a...
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Published on Jul 16, 2019in Atmospheric Chemistry and Physics 5.67
Jianfeng Li (Georgia Institute of Technology), Yuhang Wang37
Estimated H-index: 37
(Georgia Institute of Technology)
Abstract. We illustrate the nonlinear relationships among anthropogenic NO x emissions, NO 2 tropospheric vertical column densities (TVCDs), and NO 2 surface concentrations using model simulations for July 2011 over the contiguous United States (CONUS). The variations of NO 2 surface concentrations and TVCDs are generally consistent and reflect well anthropogenic NO x emission variations for high-anthropogenic-NO x emission regions. For low-anthropogenic-NO x emission regions, however, nonlinear...
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Published on Jul 16, 2019in Atmospheric Chemistry and Physics 5.67
Cheikh Dione2
Estimated H-index: 2
(University of Toulouse),
Fabienne Lohou13
Estimated H-index: 13
(University of Toulouse)
+ 6 AuthorsOmar Gabella1
Estimated H-index: 1
(University of Toulouse)
Abstract. During the boreal summer, the monsoon season that takes place in West Africa is accompanied by low stratus clouds over land that stretch from the Guinean coast several hundred kilometers inland. Numerical climate and weather models need finer description and knowledge of cloud macrophysical characteristics and of the dynamical and thermodynamical structures occupying the lowest troposphere, in order to be properly evaluated in this region. The Dynamics-Aerosol-Chemistry-Cloud Interacti...
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