Information on Climate Change

NASA publishes a good collection of online information on climate change, which includes:

The following images from NASA show the rise of carbon in our atmosphere and how it causes global warming.

NASA co2 Graph11

NASA Page-3

NASA report that climate models “predict that as the world consumes ever more fossil fuel, greenhouse gas concentrations will continue to rise, and Earth’s average surface temperature will rise with them. Based on a range of plausible emission scenarios, average surface temperatures could rise between 2°C and 6°C by the end of the 21st century.

“The higher estimates are made on the assumption that the entire world will continue using more and more fossil fuel per capita, a scenario scientists call ‘business-as-usual’. More modest estimates come from scenarios in which environmentally friendly technologies such as fuel cells, solar panels, and wind energy replace much of today’s fossil fuel combustion.”

The Intergovernmental Panel on Climate Change (IPCC) is a good source of authoritative technical information. Their publications include online responses to a number of frequency asked questions, including on factors that determine the Earth’s climate, as shown in the following image showing the Earth’s energy balance.

IPCC faq-1-1-figure-1

The following four statements summarises their Summary for Policymakers from their Fifth Assessment Report in 2013:

  • “Warming of the climate system is unequivocal, and since the 1950s, many of the observed changes are unprecedented over decades to millennia. The atmosphere and ocean have warmed, the amounts of snow and ice have diminished, sea level has risen, and the concentrations of greenhouse gases have increased.
  • “Total radiative forcing is positive, and has led to an uptake of energy by the climate system. The largest contribution to total radiative forcing is caused by the increase in the atmospheric concentration of CO2 since 1750.
  • “Human influence on the climate system is clear. This is evident from the increasing greenhouse gas concentrations in the atmosphere, positive radiative forcing, observed warming, and understanding of the climate system.
  • “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.”

Dave M

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One thought on “Information on Climate Change

  1. Pingback: World needs a “massive shift” to renewable energy | Wivey Energy & Solar Power

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