Inacitvity

I have not been updating the blog recently due to the exams.
I will summarise what I have done so far
-The IPW report
-Presentation Script
-More Information for our project.
Unfortunately some members in our team are not co-operating therefore we have difficulties in completing the project. Although they still did some research they did not play their part in the project.

Ozone Depletion

Ozone Depletion is the depletion of the ozone layer, it declines at 4% for every decade since the late 1970s. The Ozone layer also goes through larger scale, seasonal decrease in the ozone layer of Earth during the same period. The latter phenomenon is also known as Ozone Hole.

Stratopause/Stratosphere/Ozone Layer

Stratopause

The edge in the middle of the Mesosphere and Stratosphere, 55 km above ground.

The pressure is 1/1000th* of sea level pressure

Stratosphere

The name derived from the latin word "stratus" which means spreading out. The Stratosphere stretches from the troposphere(lowest layer) 7-17 km range to 51km. The temperature increases with height. It contains the ozone layer which contains high concentrations of ozone(type of chemical),in the lower part of the Stratosphere, 15km-35km above the earth's surface. The thickness varies seasonally and geographically(position).

Ozone Layer

Although it is part of the Stratopshere, the ozone layer is counted as a single layer of the Earth since it's chemical composition is very different from the Stratosphere.

It prevents most of the dangerous ultraviolet lights from entering Earth, there for is counted as one of the most important layers in the atmosphere.

*Sea Level Pressure=101.325 kPa(Kilo Pascals)

Mesopause/Mesoshpere

Mesopause

-The Coldest place on Earth(-100˚C).The temperature minimum at boundary between the thermosphere and the Mesopshere.

Mesosphere

It derived from the Greek word "μέσος" which means middle. The Mesoshpere it is 50km to 80-85 km high. The temperature decreases with height.

Thermosphere/Thermopause

Thermopause

-It is the boundary above the thermosphere, it is around 500-1,000 km high above ground level

Thermosphere

-From 80-85 to over 640 Km. Since temperatures increase with height the temperature reaches up to 1.500˚C but a human would not feel warm due to the extremely low pressures. ( The International Space Station orbits in the Thermopause)

Ionosphere

The part of the atmosphere that is ionized by solar radiation stretches from 50 to 1,000 km (31 to 620 mi) and typically overlaps both the exosphere and the thermosphere. It plays an important part in atmospheric electricity and forms the inner edge of the magnetosphere. Because of it's charged particles, it has practical importance because it influences, for example, radio propagation on the Earth. It is responsible for auroras( a natural electrical phenomenon that looks like streams of reddish or greenish light in the sky. Found near the North or the south pole)