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Journal ArticleDOI

Computational approaches for efficiently modelling of small atmospheric clusters

Jonas Elm, +1 more
- 05 Nov 2014 - 
- Vol. 615, pp 26-29
TLDR
In this article, the authors investigate how different DFT functionals (M06-2X, PW91, ω B97X-D) and basis sets affect the thermal contribution to the Gibbs free energy and single point energy.
About
This article is published in Chemical Physics Letters.The article was published on 2014-11-05. It has received 71 citations till now. The article focuses on the topics: Gibbs free energy & Coupled cluster.

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Citations
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Ion-induced nucleation of pure biogenic particles

Jasper Kirkby, +95 more
- 26 May 2016 - 
TL;DR: Ion-induced nucleation of pure organic particles constitutes a potentially widespread source of aerosol particles in terrestrial environments with low sulfuric acid pollution.
Journal ArticleDOI

Modeling the formation and growth of atmospheric molecular clusters: A review

TL;DR: A review of state-of-the-art quantum chemical methods and cluster distribution dynamics models that are applied to study the formation and growth of atmospheric molecular clusters can be found in this paper.
Journal ArticleDOI

Coupled Cluster Evaluation of the Stability of Atmospheric Acid-Base Clusters with up to 10 Molecules.

TL;DR: The DLPNO method is applied to large acid - base clusters consisting of up to 10 molecules, which have previously been out of reach with accurate coupled cluster methods, to better mimic the canonical coupled cluster calculations.
Journal ArticleDOI

Basis set convergence of the binding energies of strongly hydrogen-bonded atmospheric clusters

TL;DR: It is found that the use of the F12 corrections is of utter importance for obtaining converged binding energies, and a pragmatic approach is identified, relying solely on a series of double-ζ basis set calculations, for obtaining results in remarkably good agreement with the CBS estimate.
Journal ArticleDOI

Diamines Can Initiate New Particle Formation in the Atmosphere.

TL;DR: It is found that putrescine significantly enhances the formation of new particles compared to dimethylamine, suggesting that diamines, or related compounds with high basicity, might be important species in forming the initial cluster with sulfuric acid and subsequently more abundant amines with lower basicity can assist in the new particle formation process by attaching to the sulfuric Acid-diamine nucleus.
References
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Journal ArticleDOI

Semiempirical GGA-type density functional constructed with a long-range dispersion correction.

TL;DR: A new density functional of the generalized gradient approximation (GGA) type for general chemistry applications termed B97‐D is proposed, based on Becke's power‐series ansatz from 1997, and is explicitly parameterized by including damped atom‐pairwise dispersion corrections of the form C6 · R−6.
Journal ArticleDOI

Molecular understanding of sulphuric acid-amine particle nucleation in the atmosphere

Joao Almeida, +85 more
- 17 Oct 2013 - 
TL;DR: The results show that, in regions of the atmosphere near amine sources, both amines and sulphur dioxide should be considered when assessing the impact of anthropogenic activities on particle formation.
Journal ArticleDOI

Oxidation products of biogenic emissions contribute to nucleation of atmospheric particles.

TL;DR: It is shown, in experiments performed with the CLOUD (Cosmics Leaving Outdoor Droplets) chamber at CERN, that sulfuric acid and oxidized organic vapors at atmospheric concentrations reproduce particle nucleation rates observed in the lower atmosphere.
Related Papers (5)

Molecular understanding of sulphuric acid-amine particle nucleation in the atmosphere

Joao Almeida, +85 more
- 17 Oct 2013 - 

Role of sulphuric acid, ammonia and galactic cosmic rays in atmospheric aerosol nucleation

Jasper Kirkby, +68 more
- 25 Aug 2011 -