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Global warming

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by

Nerea Scarlatta

on 10 December 2015

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Transcript of Global warming

Global Warming
THE ENVIRONMENT
All of the external factors affecting an organism
An Inconvenient Truth
Video-watching activities
The greenhouse effect
The sun’s radiation comes in the form of light waves and heats up the earth. Some of The radiation that is absorbed and warms the earth is re-radiated back into space in the form infrared radiation. Some of the outgoing infrared radiation is trapped inside the atmosphere. It keeps the temperature of the Earth within certain boundaries so it can be livable.
FACTORS THREATENING THE ENVIRONMENT
Population Growth
biotic
abiotic
CONSTANT
INTERACTION
ECOSYSTEM
Global warming:
causes and effects
Population size and distribution of organisms
interaction
Global Warming
Depletion of the Ozone Layer
CONSEQUENCES
Natural or human-made disruptions
carrying capacity
depends on
Earth's climate variations
-The measurements of atmospheric temperature show a continuous and intensifying increase, and at the time of the documentary the last years were the hottest ever measured.
-High temperature records were broke in different cities throughout the planet
Causes:
-The impact of mankind's actions over the planet, such as POLLUTION: it causes retention of infrared radiation in the atmosphere.

-An increasing world population that demands more consumption of natural resources, thus damaging the environment.
Effects
-Climate change
-Retreat of glaciers
-Loss of ice in the polar ice cap
-Flooding, drought and heath waves
-Severe weather events worldwide
-Sea level rising
-Shifts in seasons
-Increased insect infestations
Scientific findings in the Antartic Ice
The ice cores revealed that the levels of CO2 in the atmosphere through the years an the historic temperatures are related, and nowadays the amount of CO2 is higher than ever. This will continue to increase drastically in the next 50 years, thus provoking higher temperatures.
Climate change predictions
-Higher temperatures
-Drought and frequent heath waves
-Changes in season's durations
The relationship between natural disasters and global warming
-Ocean and wind currents distribute heath through the globe. An increase in the average temperature of the planet means varying increases in different areas of the world
-Warmer ocean temperatures generate stronger storms
Increment of population:
77 millions each year
pollution
destruction of habitats
additional resources
2000: 6.2 billion people

2050: 9.3 billion people

¿?
Average global temperature:
15 °C
rise in sea levels
extinction of species
disruption of agriculture
frequency of severe disasters
Increment (Celsius):
0.6 the past century
1.4 to 5.8 the next century
The final factor that transforms our relationship to the earth
Our collective nervous system
We need a sudden jolt before we became aware of the danger.
"The era of procrastination, of half-measures, of soothing and baffling expedients, of delays, is coming to its close. In its place we are entering a period of consequences"

Sir Winston Churchill
1970s Discovery of CFCs' effects
Our ability to live in
planet earth
and have a future civilization
is at stake.

THE SOLUTION IS IN OUR HANDS...


ARE YOU READY TO CHANGE THE WAY YOU LIVE?
1987 Montreal Protocol
Paradoxical effects
Global warming causes more flooding and more drought. It increases and relocates precipitations worldwide, and it also sucks moisture out of the soil.
Understanding the Environment
Even minute actions in any factor in an ecosystem produce changes
The ozone layer may not fully recover until 2065
Full transcript