نتایج جستجو برای: atmospheric
تعداد نتایج: 77539 فیلتر نتایج به سال:
For a synoptic analysis of high polluted days in 13 and 14 November 2007, a combinatorial synoptic analysis was used. From methodology prospect, the present study has utilized the "circular environment" synoptic approach and with respect to the restrictions on very high-polluted days in Mashhad city, the subjective synoptic analysis used for data processing and analyzing the prevailin...
This paper describes a LIDAR for atmospheric measurement and probing (LAMP). The LAMP system is a commercial LIDAR unit that uses the design of boundary layer LIDAR (BLL), an optical radar technology developed at the National Atmospheric Research Laboratory (NARL) for atmospheric applications. The LAMP technology is useful for remote monitoring of atmospheric particulate and clouds in the tropo...
Background and aims Exposure to flour dust and related allergens is one of the most common causes of occupational airway disease (OAD) and occupational asthma (OA). The main purpose of this study was to investigate the respiratory effects of exposure to high atmospheric concentrations of flour dust. Methods This study was carried out in a local flour producing factory in Shiraz, in 1384. Sixty...
lichen species (hypogymnia physodes and evernia prunastri) were used for biomonitoring thepossible air pollution with heavy metals in the vicinity of copper mine in the eastern part of the republic ofmacedonia. the contents of 18 elements were analysed by icp-aes and etaas techniques. for dataprocessing basic statistical methods and multivariate exploratory (factor and cluster analysis) techniq...
to enhance the understanding of the impact of obstacle buildings on pollution transportationand dispersion in the atmospheric boundary layer, it is necessary to know the atmospheric flow characteristics over terrains. wind flow characteristics in a boundary layer over a step-shaped cliff topography model with rough and smooth surfaces were studied numerically using computational fluid dynamics ...
atopic eczema (ae) is a chronic inflammatory skin disease that affects children and adults, and alters quality of life with a high morbidity rate and severe economic burden. the objective of the present work was to analyse specific atmospheric pollutants (o3, no, pm10 and so2) affecting the prevalence of diagnosed ae and its symptoms among 6-7-year-old schoolchildren. the participants included ...
Accurate atmospheric temperature and moisture profiles are essential for weather forecasts research. Satellite-based hyperspectral infrared observations meaningful in detecting profiles, especially over oceans where conventional can seldom be used. In this study, a HIRAS (Hyperspectral Infrared Atmospheric Sounder) Sounding System (HASS) was introduced, which retrieves using one-dimension varia...
T he field of atmospheric chemistry is very broad, both in the problems addressed and in the approaches taken. Thus, it includes laboratory and theoretical studies, field measurements, and modeling, and addresses chemistry from the lower to the upper atmosphere, in remote and polluted regions, from marine to continental areas, and both outdoors and indoors. Given this complexity, it is impossib...
A new one-dimensional radiative equilibrium model is built to analytically evaluate the vertical profile of the Earth's atmospheric radiation entropy flux under the assumption that atmospheric longwave radiation emission behaves as a greybody and shortwave radiation as a diluted blackbody. Results show that both the atmospheric shortwave and net longwave radiation entropy fluxes increase with a...
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