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Earths Climate is Out of Balance. download - Coggle Diagram
Earths Climate is Out of Balance.
Global temperatures are Rising
Long Term vs Short Term
Long Term: Increased heat, drought and insect outbreaks,
Short Term: Increased wildfires. Declining water supplies, reduced agricultural yields, health impacts in cities due to heat, and flooding and erosion in coastal areas are additional concerns.
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Evidence
Nineteen of the warmest years have occurred since 2000, with the exception of 1998.
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Greenhouse Gasses increasing
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Evidence
In the last 650,000 years there have been seven cycles of glacial advance and retreat, with the abrupt end of the last ice age about 11,700 years ago marking the beginning of the modern climate era — and of human civilization
The Current warming trend is of particular significance because most of it is extremely likely (greater than 95% probability) to be the result of human activity since the mid-20th century and proceeding at a rate that is unprecedented over decades to millenia
Long term vs short term
Long Term: Climate change will include a decrease in sea ice and an increase in permafrost thawing, an increase in heat waves and heavy precipitation, and decreased water resources in semi-arid regions.
Short Term: Atmospheric conditions while climate is the weather of a specific region averaged over a long period of time.
Ice Sheets Melting
Causes
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The industrial revolution, carbon dioxide and other greenhouse gas emissions have raised temperatures, even higher in the poles, and as a result.
Glaciers are rapidly melting, calving off into the sea and retreating on land.
Evidence
Satellites show that the land ice sheets in Antarctica and Greenland have been losing mass since 2002.
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Long term vs Short Term
Short term: Melting glaciers add to rising sea levels which then increases coastal erosion and elevates storm surge as warming air.
Ocean temperatures create more frequent and intense coastal storms like hurricanes and typhoons. Land mass starts to cover around the world and on coastal areas
Carbon dioxide levels :
Causes
The burning of fossil fuels like coal and oil has increased the concentration of atmospheric carbon dioxide (CO2).
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Evidence
Over the past 171 years, human activities have raised atmospheric concentrations of CO2 by 47% above pre-industrial levels found in 1850.
More than what had happened naturally over a 20,000 year period
Long Term vs Short Term
Short Term: Carbon is stored in the atmosphere, oceans and biosphere with the ocean containing the largest amount of carbon
Long Term: In the carbon cycle, carbon dioxide is removed from the atmosphere and converted to fossil fuels and rocks which are components of the long-term reservoir.
Rising Sea Levels
Evidence
Every Year, sea ice increases and decreases depending on the season
Observational and modelling studies of mass loss from glaciers and ice caps indicate a contribution to sea-level rise of 0.2-0.4 mm per year, averaged over the 20th century.
Over the 21st century, this is expected to rise, with glaciers contributing 7 to 24 cm (3 to 9 in) to global sea levels.
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Long Term vs Short Term
Short term: Sea levels rise rapidly and small increase can have devastating effects on coastal habitats farther inland, it can cause destructive erosion and wetland flooding
Long term: Sea level rise will continue beyond this century and as a result of this melting ice sheets.
Sea levels will rise by 2.3 metres over the next centuries for every 1C rise in long-term, global average temperatures, according to research quoted by the IPCC