Transcript Atmosphere/ Jetstream

Atmosphere/ Jetstream
Exosphere- 500 km and beyond
• Outermost layer
• Very few air molecules
• No clear boundary between this layer and
space
Thermosphere - 95km to 500 km
• Warmest layer of the atmosphere
• Reflects radio waves
• Lower layer is called the ionosphere, this is
where auroras take place.
Mesosphere – 45 km to 95km
• Coldest part of the atmosphere
Stratosphere – 10km to 45 km
• Ozone layer located here
• Little to no water vapor
• Tropopause- (between strato and tropo)
Jet stream is located here
Troposphere – ground to 10km
• Closest to the ground
• 99% of all weather takes place here.
Jet Stream
• A wind current, which moves around Earth
capturing and changing anything in its path.
• If forms high in the tropopause, between two air
masses of very different temperatures.
• The greater the temp difference, the faster the
wind blows in the jet stream.
• This “river” of air can reach speeds up to 643.7
km/hr and be several hundred miles wide.
• Usually form in the winter when there is a greater
contrast in temp of cold air masses and warm air
masses
• Jet stream does NOT cause weather conditions,
but exists because of certain weather conditions.