منابع مشابه
Smoking rain clouds over the Amazon.
Heavy smoke from forest fires in the Amazon was observed to reduce cloud droplet size and so delay the onset of precipitation from 1.5 kilometers above cloud base in pristine clouds to more than 5 kilometers in polluted clouds and more than 7 kilometers in pyro-clouds. Suppression of low-level rainout and aerosol washout allows transport of water and smoke to upper levels, where the clouds appe...
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The range of scales is immense. At the high end we are looking at changes in the ice caps near the North and South poles, at the global ocean and atmospheric circulation patterns and, on a shorter time scale, at the motion of weather patterns around the globe. The length scale in each of these cases is in the thousand kilometre range, and this is not the subject of the present article, though w...
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A mean field model is presented that describes droplet growth resulting from condensation and collisions and droplet loss resulting from fallout. The model allows for an effective numerical simulation. The numerical scheme that is conservative in water mass and keeps accurate count of the number of droplets is applied, and the way in which the rain initiation time depends on different parameter...
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Wireless data providers send data such as stock prices, news headlines, traffic and weather information, and advertisements. Since wireless bandwidth is a constrained resource that determines the cost of the provider, it must be used efficiently. To conserve the bandwidth, data broadcasting techniques could be used. Existing research in data broadcasting has addressed the problems of what to br...
متن کاملEffect of hygroscopic seeding on warm rain clouds
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ژورنال
عنوان ژورنال: Nature
سال: 1889
ISSN: 0028-0836,1476-4687
DOI: 10.1038/040078a0