The aerosol dynamics of H2O–H2SO4–HNO3 mixtures in aircraft wakes. A modeling study

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Publication Date
DOI 10.1039/A906537G
Impact Factor 3.676
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Abstract

The aerosol dynamics of H2O–H2SO4–HNO3 mixtures formed (i) by homogeneous nucleation and (ii) by adsorption on emitted soot particles in the jet regime of a B 747 airliner have been investigated by modeling studies. Emission indices of 0.05 g kg(fuel)-1 and 1.0 g kg(fuel)-1 for soot and SO2, respectively, were chosen. In addition, the influence of both chemiions (EI(HSO4-)=2.9×10-5 g kg(fuel)-1) and different initial S(VI)/(S(VI)+S(IV)) ratios (0.8–10%) have been taken into consideration. As opposed to previous studies which were restricted to the binary H2O–H2SO4 system, the presence of HNO3 in the plume has been included. Both, composition and size spectra of the H2O–H2SO4–HNO3 clusters have been investigated. It is found that, caused by the presence of HNO3 in liquid aerosols, the reduced vapour pressure of H2O leads to enhanced water uptake. In analogy to H2O–H2SO4–HNO3-coated soot particles and especially for high fuel sulfur contents, a fraction of these aerosols can then also freeze and hence contribute to visible contrails.

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Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics
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Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.

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