meteorology Flashcards
what is 78% of the atmospheric composition
nitrogen
what is 21% of the atmospheric composition
oxygen
what is almost 1% of the atmospheric composition
argon and carbon dioxide
what percent of the atmosphere is within 32km
99%
what percent of weight is in the first 5.5km of the atmosphere
50%
lowest layer thickness depends on latitude 18km thick at equator 8km thick at poles weather occurs here ends at tropopause
troposphere
second layer clear and dry moisture is unable to rise beyond the tropopause ozone layer is in this layer ends at stratopause
stratosphere
third layer
very little atmosphere
ends at mesopause
mesosphere
top layer very thin contains a small amount of oxygen and nitrogen ionosphere auroras form here radio waves are reflected
thermosphere
air is highly ionized
ionsphere
solar wind interacts with magnetic fields
auroras
protects us from UV radiation
changes thickness due to pollution
located in stratosphere
90% located between 10-50km above earths surface
ozone layer
aerosol cans, hair spray, etc
Montreal protocol
banned use in most countries
thinnest over South Pole
CFC- chlorinated fluorocarbons
list the dangers of CFC
increase in UV radiation at earths surface
results in an increased risk of skin cancer
increase damage to crops
List the primary greenhouse gases causing global warming
water vapor Carbon dioxide methane nitrous oxide HFC
which greenhouse gas is causing the biggest issue
Carbon dioxide
daily changes
weather
historical changes
climate
changes seen in meteorological records that deviate from the historical norms
currently temps are rising faster than ever before
climate change
when carbon goes up..
so does the temp
why is the temp rising
Carbon dioxide released into the atmosphere
temp decreases with what in the troposphere
height
what influences temperatures
uneven heating of the earths surface water vs land day vs night equator vs poles earths tilt
land heats faster than water and..
cools faster than water
water heats slowly but…
remains warm longer
warmest part of the day is…
early afternoon
coolest part of the day is…
just before dawn
absorbed heat radiates where
into space
what receives the most direct sunlight
equator
where receives the least sunlight
the poles
during our winter do we receive more or less sunlight
less
weight of the atmosphere
measured in millibars or inches of mercury
barometer is the device used to measure this
air pressure
the most atmosphere
sea level