[1] Previous laboratory studies of haze aerosols analogous to those in Titan’s atmosphere have shown evidence of the formation of polycyclic aromatic hydrocarbons (PAHs). If present, PAHs may provide a mechanism for both particle formation and nitrogen incorporation. We have conducted new experiments simulating Titan haze production using an Aerosol Mass Spectrometer (AMS). The AMS allows us to...

PURPOSE An increase in corneal temperature has been implicated in subepithelial haze after surface photorefractive keratectomy. We aimed to determine if cooling the cornea by means of hydration between ablations and immediately after final surface ablation in PRK reduces haze. METHODS One hundred five eyes of 61 patients with myopia ranging from -6.00 to -9.75 D were included. One of the surg...

Burning agricultural straw before and/or after harvest is a common farming practice. Regional and extensive agricultural open field straw burning can cause serious air pollution events. This paper looks at the effects of biomass burning emission on regional haze that should be considered in the forecasting of regional haze. It describes the current state of crop residue burning in China, and an...

The East China Plains (ECP) region experienced the worst haze pollution on record for January in 2013. We show that the unprecedented haze event is due to the extremely poor ventilation conditions, which had not been seen in the preceding three decades. Statistical analysis suggests that the extremely poor ventilation conditions are linked to Arctic sea ice loss in the preceding autumn and exte...

determinants of early onset haze were retrospectively explored in patients who had been undergone laser-assisted sub-epithelial keratectomy (lasek) in a private eye clinic. the technique included creating an epithelial flap following 20 seconds exposure to 20% alcohol. ‘optimized’ ablation profile was used by allegretto laser (wavelight technologie). following repositioning of the flap, a singl...

The Archean Earth (3.8 to 2.5 billion years ago) was probably enshrouded by a photochemical haze composed of fractal aggregate hydrocarbon aerosols. The fractal structure of the aerosols would have had a strong effect on the radiative properties of the haze. In this study, a fractal aggregate haze was found to be optically thick in the ultraviolet wavelengths while remaining relatively transpar...

The rapid industrial development has led to the intermittent outbreak of pm2.5 or haze in developing countries, which has brought about great environmental issues, especially in big cities such as Beijing and New Delhi. We investigated the factors and mechanisms of haze change and present a long-term prediction model of Beijing haze episodes using time series analysis. We construct a dynamic st...

Removing haze or rain is one of the difficult problems in computer vision applications. On real-world road images, and often occur together, but traditional methods cannot solve this imaging problem. To address simultaneously, we present a robust network-based framework consisting three steps: image decomposition using guided filters, frequency-based removal network (FHRR-Net), restoration base...

When ordering very high resolution (VHR) imagery of IKONOS or QuickBird a cloud coverage up to 20 % within the scenes has to be accepted. This indicates the high impact of atmospheric conditions to VHR imagery. Beside clouds the images are influenced by haze oftentimes. This haze could be removed using new atmospheric correction algorithms, which were not available for VHR data so far. Furtherm...