We describe several techniques developed by the High Resolution Fly’s Eye experiment for measuring aerosol vertical optical depth, aerosol horizontal attenuation Preprint submitted to Elsevier Science 5 February 2008 length, and aerosol phase function. The techniques are based on measurements of side-scattered light generated by a steerable ultraviolet laser and collected by an optical detector...

Submicron ambient aerosol was characterized in summer 2005 at an urban background site in Zurich, Switzerland, during a three-week measurement campaign. Highly time-resolved samples of non-refractory aerosol components were analyzed with an Aerodyne aerosol mass spectrometer (AMS). Positive matrix factorization (PMF) was used for the first time for aerosol mass spectra to identify the main comp...

Sea salt aerosol concentrations in the clean marine boundary layer can be considered spatially homogeneous when averaged over space and time. Using this assumption, horizontal and slant lidar measurements are carried out at a Hawaii coastal site allowing accurate retrieval of the marine aerosol scattering coefficient. It is found that when the lidar calibration or the aerosol phase function is ...

INTRODUCTION Thin films of different materials like metals, oxides, sulphides, etc., can be deposited by the Chemical Aerosol Deposition Technology (CADT). A liquid aerosol is used to transport the chemical reactants to the vicinity of a heated subslrate. Conditions are set to obtain an heterogeneous reaction (CVD mode) between the evaporated reactants and the substrate (Maatman et al. 1988). T...

Sputum samples were collected from a group of private patients who had no respiratory symptoms but who frequently used aerosols generated by pressurized cans, and from two groups of controls. Atypical metaplastic changes in exfoliated cells were compared between the groups. An excess of moderate and marked atypical metaplastic cells was found among the frequent aerosol users. This association, ...

Aerosol properties are retrieved from ATSR-2 data (ERS2 satellite) by utilizing the dual view for application over land and the single view for application over water. These two algorithms have been merged into a fast and efficient algorithm that allows for near real-time processing and which is suitable for operational use. It includes corrections for surface and atmospheric effects including ...

Rift Valley fever virus (RVFV) is an important mosquito-borne veterinary and human pathogen that can cause severe disease including acute-onset hepatitis, delayed-onset encephalitis, retinitis and blindness, or a hemorrhagic syndrome. Currently, no licensed vaccine or therapeutics exist to treat this potentially deadly disease. Detailed studies describing the pathogenesis of RVFV following aero...

Hygroscopic growth of aerosol particles can significantly affect their single-scattering albedo (ω), and consequently alters the aerosol effect on tropospheric photochemistry. In this study, the impact of aerosol hygroscopic growth on ω and its application to the NO2 photolysis rate coefficient (JNO2 ) are investigated for a typical aerosol particle population in the North China Plain (NCP). Th...

BACKGROUND Exhaled aerosol patterns, also called aerosol fingerprints, provide clues to the health of the lung and can be used to detect disease-modified airway structures. The key is how to decode the exhaled aerosol fingerprints and retrieve the lung structural information for a non-invasive identification of respiratory diseases. OBJECTIVE AND METHODS In this study, a CFD-fractal analysis ...

Herein, the Halogen Occultation Experiment (HALOE) aerosol extinction coefficient data is evaluated in the low aerosol loading period after 1996 as the first necessary step in a process that will eventually allow the production of a combined HALOE/SAGE II (Stratospheric Aerosol and Gas Experiment) aerosol climatology of derived aerosol products including surface area density. Based on these ana...