Presentation on theme: "Atmospheric Basics Atmosphere Basics"— Presentation transcript:
1 Atmospheric BasicsAtmosphere BasicsAir is a combination of many gases, each with its own unique characteristics.About 99% of the atmosphere is composed of nitrogen and oxygen.The remaining one percent consisting of small amounts of argon, hydrogen, carbon dioxide, water vapor, and other gases.
2 The surrounding air of the Earth AtmosphereThe surrounding air of the Earth
9 TroposphereThis is the layer that is closest to the surface of the earthIt’s elevation ranges from 0 to 10 km
10 Atmospheric Composition Atmospheric BasicsAtmospheric CompositionLower Atmospheric LayersThe troposphere, the layer closest to Earth’s surface, contains most of the mass of the atmosphere, including water vapor.Most weather takes place in and most air pollution collects in the troposphere.
11 Stratosphere This layer sits on top of the troposphere It’s elevation ranges from 10 km to around 25 kmThis layer contains the ozone layer, which protects us from harmful sunlight
12 Atmospheric Composition Atmospheric BasicsAtmospheric CompositionLower Atmospheric LayersThe stratosphere, is where most ozone is located.Its referred to as stratospheric ozone.Planes like to fly here because there is less moisture so less clouds so less weather to jostle the planes.
13 Mesosphere This layer is above the stratosphere It’s elevation ranges from 25 to 100 km
14 Thermosphere This is the highest layer of the atmosphere It’s height ranges from 100 to 400 kmThis is where most small meteorites burn up and is also the location in the atmosphere that the northern lights occur (aurora borealis)
15 Atmospheric Composition Atmospheric BasicsAtmospheric CompositionUpper Atmospheric LayersThe mesosphere is the coldest layer of the atmosphere. It has very strong winds. This is where you would see meteors shooting through.The thermosphere is the farthest layer from the surface and it contains a very small part of the atmosphere’s mass.This is the hottest layer because it is closer to the sun and it absorbs the heat from it.
16 Atmospheric Composition Atmospheric BasicsAtmospheric CompositionThe thermosphere is divided into two parts.The ionosphere is important for radio communications because it bounces waves back to earth. This is also where the aurora bolealis occurs.The exosphere, which is composed of light gases such as helium and hydrogen, so satellites can travel here very easilyMolecules are actually traveling so fast that some are able to escape from earth’s gravity.There is no clear boundary between the atmosphere and space.
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