Climate Change
Long term trend suggests Climate change is happening
Global view data 1979-2016
Keeling data (Mauna Loa) 1958-1978
Law dome and Siple ice cores
Vostock and EPICA ice cores
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403PPM
180PPM
Emissions of CO2
from coal, gas and oil combustion and land clearing have
13C/12C isotopic ratios that are less than those in the atmosphere and
each carries a signature related to its source
Oxygen is depleted when fossil
fuels are burned
3C/12C ratio at Mauna Loa show a
decreasing ratio
Global mean Temperature
3 data sets used - Met Office CRU NOAA and NASA Goddard Institute
Anthropocentric and Natural forcing can contribute
Avoiding Climate Change
Article 2 (UNFCC)
Paris Agreement
To avoid ''dangerous anthropogenic interference''
Ecosystems can adapt
Food production is not harmed
Keeping global temperature below the 2 degree increase from pre-industrial levels
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International, regional and national guidelines in place
RCP scenarios