Cities interact with the atmosphere over a wide range of scales from the large-scale processes, which have a direct impact on global climate change, to smaller scales, ranging from the conurbation itself to individual buildings. The review presented in this paper analyzes some of the ways in which cities influence atmospheric thermodynamics and airborne pollutant transport. We present the main ...

In this review the surface chemistry and properties of aqueous atmospheric aerosols are explored. Water plays a major role in scavenging pollutants. Reactions occur on thin water films in atmospheric aerosols. The study of the aerosol water surface is important to properly account for chemical transformations in the troposphere. The thermodynamics of adsorption of organic molecules and oxidant ...

The long-term goal of this project is to improve the high-resolution model forecasts by developing a real-time globally re-locatable capability to initialize/assimilate the Coupled Ocean/Atmosphere Mesoscale Prediction System (COAMPS) land-surface model soil parameters. The partition of the model surface sensible and latent heat fluxes in the land-surface parameterization is sensitive to the in...

Aerosol and NOx emission factors and submicron particle number size distributions in two road tunnels with different traffic regimes D. Imhof, E. Weingartner, A. S. H. Prévôt, C. Ordóñez, R. Kurtenbach, P. Wiesen, J. Rodler, P. Sturm, I. McCrae, Å. Sjödin, and U. Baltensperger Paul Scherrer Institut, Laboratory of Atmospheric Chemistry, Villigen, Switzerland University of Wuppertal, Physical Ch...

Aerosol simulations especially for Earth System Models require a thermodynamics module with good compromise between rigor and computational efficiency. We present evaluate ISORROPIA-lite, an accelerated simplified version of the widely used ISORROPIA-II v.2.3 aerosol model, expanded to include effects water uptake from organics updated interface communicating simulation diagnostics information....

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Different Holocene sea-ice drift patterns in the Arctic Ocean have been hypothesized by Dyke et al. from radiometric analyses of driftwood collected in the Canadian Arctic Archipelago. A dynamic-thermodynamic sea-ice model is used to simulate the modes of Arctic Ocean ice circulation for different atmospheric forcings, and hence determine the atmospheric circulations which may have accounted fo...

The primary goal of this paper is to validate the use of the anelastic approximation for fluids with a complex equation of state such as moist air or seawater. The anelastic approximation is based on a leading-order expansion of the equations of motion for a compressible fluid in terms of density. Its application to atmospheric flows has been based on a dry framework that treats phase transitio...