[1] We consider the correlation between clouds and sulfate in order to assess the relative importance of cloud aqueous-phase production of sulfate, precipatation scavenging of sulfate, and inhibition of gas-phase sulfate production beneath clouds. Statistical analysis of observed daily cloud cover and sulfate surface concentrations in Europe and North America indicates a significant negative co...

We have demonstrated first measurements of the aerosol indirect effect using ground-based remote sensors at the Southern Great Plains (SGP) site. The response of non-precipitating, ice-free clouds to changes in aerosol loading is quantified in terms of a relative change in cloud-drop effective radius (re) for a relative change in aerosol extinction under conditions of equivalent cloud liquid wa...

the aim of this research is to report the results of testing of the pv-26 pyro-techniques materials and to report the operating conditions of a cloud and an aerosol chambers and also to introduce and describe these chambers of national research center of cloud seeding in iran for further researches. the effect of ice nuclei produced by pv-26 pyro-techniques on artificial clouds has been surveye...

Abstract. This study describes the design of Manchester Aerosol Chamber (MAC), initially developed in 2005 and presents for first time its comprehensive characterisation. The MAC is designed to investigate multi-phase chemistry evolution aerosol physico-chemical properties from real-world emissions (e.g. diesel engine, plants) or secondary organic (SOA) produced pure volatile compounds (VOCs). ...

This study was conducted to determine the effects of increased water temperatures on the development of Aedes aegypti immatures under laboratory conditions in Trinidad, West Indies using temperature regulated water baths to cover a range of temperatures from 24-25°C to 34-35°C at a relative humidity of 80%. Two experiments were designed: (1) at constant temperature regimens and (2) under diurna...

[1] The cloud condensation nucleus (CCN) activity of organic-sulfate particles was investigated using a steadystate environmental chamber. The organic component consisted of secondary organic aerosol (SOA) generated in the dark from 24 ± 2 ppb a-pinene for conditions of 300 ± 5 ppb ozone, 40 ± 2% relative humidity, and 25 ± 1 C, with the organic mass loading in the chamber ranging from 23 to 37...

The TOVS Path-B data set provides atmospheric temperature and water vapor profiles as well as cloud properties over the globe, from 1987 to 1995. Their relatively high spectral resolution yields reliable cirrus properties, day and night. First, we present average cirrus properties and their seasonal and diurnal variations. A reanalysis which will extend the present data set back to 1979 and up ...