By Dana Desonie
Earth's surroundings helps and protects all of its existence, giving the planet its blue skies, gentle temperatures, and climate. yet humans use the ambience for one more function: as a sell off for waste gases and debris. pollution obscures vistas, damages ecosystems, and compromises human healthiness. mixed with water within the surroundings, air pollution create acid rain. within the top surroundings, air pollution harm the ozone layer, which protects lifestyles from the sun's damaging rays. extra emissions of greenhouse gases like carbon dioxide and methane push worldwide temperatures greater, developing international warming. whereas a few pollution are effectively regulated, as inhabitants grows and industries extend, extra extensive strategies are had to take care of the various kinds of pollution and its outcomes. This provocative publication tackles those concerns in an easy demeanour and exhibits readers what they could do to aid preserve our planet's surroundings.
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Extra info for Atmosphere: Air Pollution and Its Effects (Our Fragile Planet)
Global Wind Belts The Coriolis effect modifies global air circulation so that there are six atmospheric circulation cells, three in each hemisphere. At the equator, air behaves as described in the section on atmospheric circulation above. Warm air rises, creating a low pressure cell, and then moves toward the poles at the top of the troposphere. As the air advects poleward, it is deflected by the Coriolis effect—to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
Jet streams are found at the transition between the troposphere and the stratosphere at heights ranging from 6 to 9 miles (10 to 15 km) above the Earth’s surface. Jet streams form when there are great temperature differences between two adjacent air masses. Each hemisphere has two major jet streams: the subtropical jet stream, between the equatorial and midlatitude circulation cells, and the polar jet stream, between the midlatitude and polar circulation cells. Jet streams move with the season.
In the first set of atmospheric circulation cells (the Hadley cells), rising air at the equator causes a great deal of rain and little wind. Early mariners called this region the doldrums because their sailing ships could be becalmed for weeks. The sinking air at 30°N and 30°S is relatively warm since much of it came from the equator and the high pressure cell it creates causes evaporation. On land, these latitudes are where many of the world’s great deserts are located, including the Sahara in Africa and the Sonoran Desert in North America.