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The conversion of sulfur dioxide to sulfuric acid, which condenses rapidly in the stratosphere to form fine sulfate aerosols. A volcanic winter is a reduction in global temperatures caused by droplets of sulfuric acid obscuring the Sun and raising Earth's albedo (increasing the reflection of solar radiation) after a large, sulfur-rich, particularly explosive volcanic eruption.
Nuclear winter is a severe and prolonged global climatic cooling effect that is hypothesized [1] [2] to occur after widespread firestorms following a large-scale nuclear war. [3] The hypothesis is based on the fact that such fires can inject soot into the stratosphere, where it can block some direct sunlight from reaching the surface of the Earth.
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Even though the "meteorological winter" in the Northern Hemisphere runs from the first of December until the last day of February, the actual moment of the winter solstice this year will be at 10: ...
Winter is the coldest and darkest season of the year in temperate and polar climates. It occurs after autumn and before spring. The tilt of Earth's axis causes seasons; winter occurs when a hemisphere is oriented away from the Sun. Different cultures define different dates as the start of winter, and some use a definition based on weather.
Winter smoke in Shanghai, China, with a clear border-layer for the vertical air-spread (1993). A temperature inversion in Bratislava , Slovakia , viewing the top of Nový Most (2005). Inversion-created smog in Nowa Ruda, Poland, 2017 Temperature inversion phenomenon in the early morning near Tawau , Sabah , Malaysia where smoke that was emitted ...
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In the history of artificial intelligence, an AI winter is a period of reduced funding and interest in artificial intelligence research. [1] The field has experienced several hype cycles , followed by disappointment and criticism, followed by funding cuts, followed by renewed interest years or even decades later.