niedziela, 16 września 2007

The hottest place ^^

Location: El Azizia is located on the northern part of the African continent.
Facts: On September 13, 1922 the thermometer reached a blistering 136° F/57.8° C.

How Hot is Hot? ;>

There are many places on earth that are plenty hot - record-breaking hot.
In fact, there's a good chance on the day this record-breaking temperature was recorded by a meteorological station in El Azizia in 1922 there were other places hundreds of miles away that were even hotter.
In all likelihood, this record temperature has been exceeded since then in many places on earth, but we have no official records of the temperatures. I
t is important to note that when atmospheric temperatures are recorded it is not the surface temperature, where it can sometimes reach 150° F/ 66° C, but rather the air temperature at about 5 feet (1.6 m) above the surface in an enclosed shelter.
Of course, it's important that the temperature sensor is not exposed to direct sunlight - the shelter is louvered to permit air flow across the sensor.
Most humans don't 'hang out' where some of the hottest tempertatures on earth are regularly experienced so there aren't a lot of meterological stations in these places to reliably record extreme temperatures.

Why is it so Dry All the Time? ;>

First, the air in the earth's atmosphere is warmest around the equator (because the sun reaches the earth at a direct 90° angle) so that warmer air rises and flows north and south of the equator. As the air "piles" up in the northern and southern latitudes, these zones of "piled-high" warm air become permanent high pressure zones.
As the air at the "bottom of the pile" descends toward the earth it gets warmed up even more. Because this descending warm air has no clouds (i.e., condensing water vapor), that allows the burning sun to go right through the air and heat the land mass below even more.
Hence, extreme heat.
Warm air can hold a lot more moisture (water vapor) than colder air.
Unless this really warm air contacts some much cooler air (or cooler land mass), there's nothing to coax the moisture out of the air in the form of precipitation (rain, fog).
Hence, lack of moisture.

1 komentarz:

. pisze...

please write it yourself Karolina :-)