Climate Change

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What is Climate Change?

Climate Change is the name given to long term changes in temperature on and around the Earth’s surface. In 2014, The Intergovernmental Panel on Climate Change (IPPC) published the 5th Assessment report on climate change based on long-term scientific evidence. This stated that the increase in greenhouse gas (GHG) concentrations (namely carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydrofluorocarbons (HFCs), perfluorocarbons (PFCs), and sulphur hexafluoride (SF6) over the past 100 years has predominantly been caused by human activities.


How do Greenhouse gases (GHG)s change the temperature?

GHGs are able to absorb long wave radiation (heat) that is reflected off the Earth’s surface. They are then able to reemit this radiation back down to Earth. If there were no GHGs in our atmosphere the Earth would be too cold for life as we know it to exist. However, as more fossil fuels, are burnt and other GHGs are released, the atmosphere is able to absorb more radiation and so is warming up. This is known as global warming or the greenhouse effect.

What evidence is there that climate change is occurring?

Since 1958, CO2 has been measured at the Mauna Loa Observatory in Hawaii. In 1958, the CO2 concentration in the atmosphere was measured at 316ppm, as of May 2016 it is currently 407ppm. You can see the change in CO2 emissions at Mauna Loa here. Before the industrial revolution began (1880s), the CO2 concentration in the atmosphere was measured at 280ppm and so in ca, 130 years, CO2 concentrations have increased by 45%.

By comparison CO2 emissions, in the past 800,000 years before the industrial revolution, had fluctuated between 180ppm (when the Earth was in an ice age) to a maximum of 280ppm (in a warmer interglacial) period. Never in recent history and during the time in which humans have been on the Earth has the atmospheric CO2 concentration been as high as it is today.


What effects of climate change are being seen?

The effects of climate change are already being seen across the Earth. The IPPC reported in the 5th Assessment Report that since 1880 there has been an increase in average surface temperature of 0.85⁰C. This may seem like a small number compared to changes in daily temperature however to put it into comparison how small global temperature changes can have a large effect, if the Earth’s surface temperature was lowered by 5⁰C it would be in a full ice age.

Other changes currently being seen:

1. Increase in sea level (global sea level has increased by 0.19m between 1910 and 2010)
2. Increase in sea surface temperature (global average increase of 0.11⁰C between 1971 and 2010)
3. Reduction in sea ice (2016 saw the lowest winter sea ice ever recorded, beating the 2015 record)
4. Change in precipitation (Some areas of the Earth are becoming seeing more intense flooding while others are seeing severe droughts)
5. Change in El Nino intensity (As El Nino intensity is in part based on sea surface temperatures, rising temperatures will cause more intense El Ninos causing flooding, droughts, wild fires and famines.
6. Ocean Acidification (The acidity of the oceans has decreased by 0.1 on the pH scale since the beginning of the industrial era).

As the global temperature continues to increase, so will the severity of these changes.

Actions for You

In December 2015, the COP21 Climate Change conference produced the so-called Paris Agreement, a Global agreement between nations that aims to keep the rise in temperature to 1.5⁰C and to ensure that the temperature rise stays well below 2⁰C above preindustrial times. In order for this to be achieved, the global GHG emissions must be stabilised and then reduced.

We all need to play a part in reducing GHGs and there are many ways of doing this- and here’s how:-.

  • Assess your household’s Carbon Footprint using our Carbon Calculator to find out the quantity of carbon emissions produced by your lifestyle and choices
  • Make a plan to reduce emissions & do it! See our carbon reduction recommendation for individuals, energy saving for households and holiday carbon footprint information pages to find ways that you can reduce your emissions.
  •  Reduce at your Workplace - if you want to get your organisation involved in reducing their emissions then Carbon Footprint Ltd offer business services to enable you to do this.
  • Support Carbon Offsetting Projects across the World – In modern life, you are unlikely to be able to get your carbon emissions down to zero (unless you have full access to renewable energies and clean energy powered cars etc). The average family of 4 causes 10 tonnes CO2 each year. Remember a tonne of CO2 saved in Mumbai is the same as one saved in Manchester or Miami. Carbon Offsetting programme.

Will any of this make a Difference?

Yes. We are already experiencing the impact of climate change. Also the lives of our children and grandchildren and their experience of biodiversity and the environment are most likely to be change irrevocably. 

Over recent times we have been able to successfully reverse the depletion of the protective ozone layer, principally be eradicating Chlorofluorocarbons (CFCs). It’s time to so the same for the Global Warming.

More information on Climate Change - Read about the science of climate change, the impacts it will have and the mitigation strategies needed to reduce its effects. If you do not want to read the full report, the summary for policy makers is a shorter document which summarises all the main points. - Read about the Paris Agreement, see how many countries have ratified it and keep up to date on all news concerning climate change. - Information on how the UK is adapting to climate change and how it is reducing its emissions. - Contains insightful infographics, recent news stories on climate change and explains how NASA is collecting data relating to Climate Change. - News stories updated daily about climate change and its effects around the world.  


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