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Within an unstable layer in the troposphere, the lifting of air parcels will occur, and continue for as long as the nearby atmosphere remains unstable. Once overturning through the depth of the troposphere occurs (with convection being capped by the relatively warmer, more stable layer of the stratosphere ), deep convective currents lead to ...
Unstable areas are in yellow (slightly) and red (highly) while the stable zone is in blue. The lifted index (LI) is the temperature difference between the environment Te(p) and an air parcel lifted adiabatically Tp(p) at a given pressure height in the troposphere (lowest layer where most weather occurs) of the atmosphere, usually 500 hPa . The ...
By their usual definitions, childhood dementias always cause global neurocognitive decline. In some childhood dementia conditions the child's early development is indistinguishable from their healthy peers, then slows or plateaus before declining. In other childhood dementia disorders, early development may be slower than typical before declining.
Marek Piwnicki / UnsplashA growing body of evidence over the last few years has demonstrated that air pollution is a significant risk factor for developing dementia in old age. It shouldn’t be ...
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During air stagnation events, it is recommended for children, elders, and people with pre-existing health conditions, to stay inside as much as possible and stay hydrated. [8] An example or air stagnation in Northern France, where a sheet of black, thick, and odorous smoke formed and stagnated for a few meters.
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Stable stratification of fluids occurs when each layer is less dense than the one below it. Unstable stratification is when each layer is denser than the one below it. Buoyancy forces tend to preserve stable stratification; the higher layers float on the lower ones. In unstable stratification, on the other hand, buoyancy forces cause convection ...