Abstract: A total of 98 three-dimensional large-eddy simulations (LESs) of marine stratocumulus clouds covering both nighttime and daytime conditions were performed to explore the response of cloud optical depth (τ) to various aerosol ...

Abstract: Numerico-empirical expressions for the particle displacement probability density function from which the mean concentration of material in turbulent fluid may be obtained are derived from the numerical planetary boundary ...

Abstract: In order to produce gridded fields of pollutant concentration data and surface wind data for use in an air quality model, a number of techniques for interpolating sparse data values are compared. The techniques are compared ...

Abstract: An objective analysis procedure for generating mass-consistent, urban-scale three-dimensional wind fields is presented together with a comparison against existing techniques. The algorithm employs terrain following coordinates ...

Abstract: This paper describes the results of an atmospheric tracer study in which sulfur hexafluoride (SF6) was used to investigate the transport and dispersion of effluent from a power plant located in a coastal environment. The ...

Abstract: No abstract available.

Abstract: Significant enhancements in humidity around cumulus clouds, that is, the ?cloud halos? observed in many aircraft penetrations, are simulated using a three-dimensional dynamic model. Five case studies show that humidity ...

Abstract: A new instrument for measuring cloud condensation nuclei (CCN) on board small aircraft is described. Small aircraft are attractive mainly because they are less costly, but they require instruments that are designed for ...

Abstract: Polycyclic aromatic hydrocarbons (PAHs) have been sampled in marine stratiform clouds to identify the contribution of anthropogenic combustion emissions in activation of aerosol to cloud droplets. The Monterey Area Ship ...

Abstract: A radially classified aerosol detector (RCAD) for fast characterization of fine particle size distributions aboard aircraft has been designed and implemented. The measurement system includes a radial differential mobility ...