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CRITICAL THRESHOLDS AND CLIMATE TIPPING POINTS, MAIN CRITICAL THRESPOINTS …
CRITICAL THRESHOLDS AND CLIMATE TIPPING POINTS
CRITICAL THRESHOLD: A POINT AT WHICH THE CLIMATE SYSTEM TAKES A TURN THAT WILL HAVE MAJOR, AND OFTEN NEGATIVE, CONSEQUENCES IN THE FUTURE
TIPPING POINT: A POINT OF NO RETURN
MAIN CRITICAL THRESPOINTS
THE MELTING OF ICE IN THE ARCTIC, GREENLAND, AND ANTARTICA
GIVE OFF A CHAIN REACTION THAT IS TRIGGERED BY THE MELTING
ALBEDO: A MEASURE OF THE RATIO OF LIGHT REFLECTED OFF A SURFACE
EFFECT ON GLOBAL WARMING:
SEA ICE HAS HIGH ALBEDO AS IT'S BRIGHT WHITE AND REFLECTIVE
SEA ICE MELTS INTO SEA WATER, BECOMES DARK AND HAS A LOW ALBEDO
ABSORBS A HIGH AMOUNT OF SOLAR ENERGY, MAKE THE SEA WATER WARMER, WHICH FURTHER CONTRIBUTES TO THE MELTING OF ICE
GLACIERS MELT, RISING WATERS CAUSE FLOODING AND MELTING OF PERMAFROST AREAS
PERMAFROST MELTS AND RELEASES MASSIVE AMOUNTS OF GREENHOUSE GASES THAT ARE STORED IN SOIL
THE GREENHOUSE GASES CAUSE GLOBAL WARMING
CARBON DIOXYDE ATMOSPHERIC CONCENTRATION OF 400 PARTS PER MILLION
PERMANENTLY CROSSED IN 2016
THE AMAZON RAINFOREST SLOWS IN ITS ABSORPTION OF CO2
THE AMAZON'S HELP TO LIMIT GLOBAL WARMING
ACTS LIKE A SPONGE, ABSORBING LARGE AMOUNTS OF HARMFUL CO2 FROM THE AIR
CAUSES:
THE AMAZON IS VULNERABLE TO EXTREME HEAT SO THE TWO SEVERE DROUGHT IN 2005 AND 2010 CAUSED TREES IN THE RAINFOREST TO DIE
CARBON INCREASED CO2. THIS INCREASE IN CO2 CAUSE TREES TO GROW FAST BUT HAVE LESS SUPPORTIVE ROOT SYSTEMS AND DIE YOUNG. THE DEATH OF THESE TREES THEN REDUCED CARBON ABSORPTION RATE