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Global Warming - Coggle Diagram
Global Warming
Greenhouse Effect
(normal situation)
step 1
Radiation sun passes through
Earth's atm
HEATS UP SURFACE EARTH
step 2
radiation with longer wavelength
emitted back from surface
some heat reflected back to space
step 3
some heat absorbed by
greenhouse gas CO2
trapped within Earth's atm
Earth becomes hotter
human activity
causing levels CO2 to
increase in atmosphere
two major
changes:
increased consumption
of fossil fuels
add more CO2 to the
atmosphere
increased
deforestation
removed many forests
less CO2 taken out of atmosphere
by photosynthesis
changes mean carbon cycle
become
unbalanced
INCREASE in C in atmosphere
increase greenhouse effect
increase global warming
Greenhouse Gases
Methane
produced:
anaerobic activity by
microorganisms
fermentation of waste in
landfill sites
waste expelled
from cows
escaping from oil, gas
or coal fields
more potent -
concentration is lower
shorter lasting in atm
effect less
Carbon Dioxide
Chlorofluorocarbons
Nitrous Oxide
denitrifying bacteria convert
nitrogen (nitrate + ammonia) in
artificial fertilisers into nitrous oxides
Effects
shifts in ecological
range of flora + fauna
plants/animals
ADAPT/MIGRATE
move higher latitude
or higher altitude
if at species at limits already,
other species in food web affected
local extinctions
consequences for
species diversity
changing habitats
consequences for
ecosystem diversity
climate change
polar ice-caps
to melt
increased flooding
desertification
(more land become desert)
rapid spread of disease
in warmer climates
Reducing Global
Warming
plant more trees
reduce deforestation
burn less fossil fuels
using alternative fuels
becoming more energy efficient
not be able to stop but slow
down & manage it better
Controversy
Surrounding
recording of
evidence
sources/causes
modelling - predictions
possible solutions