نتایج جستجو برای: bt32 2 dust sky without dust and cloudcloud figure 1 reflectance behavior diagram of cloud
تعداد نتایج: 24504902 فیلتر نتایج به سال:
The heavy air pollution, known as Atmospheric Brown Cloud (ABC), has been research mainly for its radiative effects and cloud condensation nuclei (CCN) activity that act to nucleate larger number of smaller cloud drops, and hence suppress coalescence and warm rain forming processes (Ramanathan et al., 2001). Precipitation in convective clouds with aerosol-induced suppressed coalescence is initi...
The influence of clouds on Earth ́s radiation balance is a key component of the atmospheric system. Therefore, the determination of cloud cover is an important activity traditionally performed by human observations and broadcasted by meteorological services observers in Synop and Metar reports. However, human observations are subject to large errors of estimation, and their temporal resolution i...
1-Interoduction: Air pollution has been considered as one of the global challenges. According to world health organization (WHO), dust particles are the 5th most dangerous cause of death 4.2 million in the world. According to the world meteorological organization (WMO), when the wind speed increases more than 15 m/s and the visibility decreases because of dust particles less than 1 km, it is c...
Article history: Received 23 May 2011 Accepted 6 June 2011 Available online 14 June 2011 Communicated by V.M. Agranovich Dust heating in dusty plasmas due to thermal electric field fluctuations and dust acoustic waves is examined. It is shown that dust particles acquire large random motion in fluctuating electric fields (within dust cloud) of background plasma causing dust electrostatic pressur...
1. introduction dust storm is a natural phenomenon that occurs frequently in the arid and semi-arid regions all over the world (alijani, 1997). dust can affect soil fertility, forests, rivers, lakes, and marine ecosystems around the world (mctainsh et al., 2007). therefore, soil erosion can lead to the loss of the minerals and organic matter of topsoil. some elements of dust have also an indire...
Effect of Simulated Dust Storm on some Bio-chemical features of Persian Oak (Quercus brantii Lindl.)
Extended abstract 1- Introduction Dust storm is a hazardous natural event affecting all creatures. (1). Due to the global warming drought, reduction in precipitation, and mismanagement in the water by humankind, the negative effects of this calamity were more observed (2). With increasing the wind speed, and based on the size of dust particles, land topography, soil humidity, vegetation cover...
We present a study of the detailed distribution of extinction in a region of the Taurus dark cloud complex. Our study uses new BV R images of the region, spectral classification data for 95 stars, and IRAS Sky Survey Atlas (ISSA) 60 and 100 μm images. We study the extinction of the region in four different ways, and we present the first inter-comparison of all these methods, which are: 1) using...
The simulations and potential forecasting of dust storms are of significant interest to public health and environment sciences. Dust storms have interannual variabilities and are typical disruptive events. The computing platform for a dust storm forecasting operational system should support a disruptive fashion by scaling up to enable high-resolution forecasting and massive public access when d...
With the possibilities of high-spatial resolution imaging and spectroscopy as well as infrared (IR) interferometry, the dusty environments of active galactic nuclei (AGN) are now in reach of observations. The presumed optically-and geometrically-thick dusty structure, or " dust torus " , is located around the mid-plane of the nuclear accretion disk, reaching from sub-parsec scales outward to se...
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