Chennai:
Global surface temperature change for the end of the 21st century is projected to be likely to
exceed 1.5°C relative to 1850 to 1900 in all but the lowest scenario considered, and likely to exceed
2°C for the two high scenarios, according to The Intergovernmental Panel on Climate Change's 5th Assessment Report.
Warming in the climate system is unequivocal and since 1950 many changes have been
observed throughout the climate system that are unprecedented over decades to millennia. Each of
the last three decades has been successively warmer at the Earth’s surface than any preceding
decade since 1850, reports the Summary for Policymakers of the IPCC Working Group I
assessment report, Climate Change 2013: the Physical Science Basis, approved on Friday by
member governments of the IPCC in Stockholm, Sweden.
Thomas Stocker, Co-Chair of Working Group I said: "Continued emissions of greenhouse
gases will cause further warming and changes in all components of the climate system. Limiting
climate change will require substantial and sustained reductions of greenhouse gas emissions."
“Heat waves are very likely to occur more frequently and last longer. As the Earth warms, we expect to see currently wet regions receiving more rainfall, and dry regions receiving less, although there will be exceptions,” he added.
Projections of climate change are based on a new set of four scenarios of future greenhouse gas
concentrations and aerosols, spanning a wide range of possible futures. The Working Group I report
assessed global and regional-scale climate change for the early, mid-, and later 21st century.
“As the ocean warms, and glaciers and ice sheets reduce, global mean sea level will continue to
rise, but at a faster rate than we have experienced over the past 40 years,” said Co-Chair Qin Dahe.
The report finds with high confidence that ocean warming dominates the increase in energy stored
in the climate system, accounting for more than 90% of the energy accumulated between 1971 and
2010
Global surface temperature change for the end of the 21st century is projected to be likely to
exceed 1.5°C relative to 1850 to 1900 in all but the lowest scenario considered, and likely to exceed
2°C for the two high scenarios, according to The Intergovernmental Panel on Climate Change's 5th Assessment Report.
Warming in the climate system is unequivocal and since 1950 many changes have been
observed throughout the climate system that are unprecedented over decades to millennia. Each of
the last three decades has been successively warmer at the Earth’s surface than any preceding
decade since 1850, reports the Summary for Policymakers of the IPCC Working Group I
assessment report, Climate Change 2013: the Physical Science Basis, approved on Friday by
member governments of the IPCC in Stockholm, Sweden.
Thomas Stocker, Co-Chair of Working Group I said: "Continued emissions of greenhouse
gases will cause further warming and changes in all components of the climate system. Limiting
climate change will require substantial and sustained reductions of greenhouse gas emissions."
“Heat waves are very likely to occur more frequently and last longer. As the Earth warms, we expect to see currently wet regions receiving more rainfall, and dry regions receiving less, although there will be exceptions,” he added.
Projections of climate change are based on a new set of four scenarios of future greenhouse gas
concentrations and aerosols, spanning a wide range of possible futures. The Working Group I report
assessed global and regional-scale climate change for the early, mid-, and later 21st century.
“As the ocean warms, and glaciers and ice sheets reduce, global mean sea level will continue to
rise, but at a faster rate than we have experienced over the past 40 years,” said Co-Chair Qin Dahe.
The report finds with high confidence that ocean warming dominates the increase in energy stored
in the climate system, accounting for more than 90% of the energy accumulated between 1971 and
2010
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