Write a conclusion on the topic " Carbon footprint and climate change"
Answers
Understand climate change
The threat climate change poses to society, the economy and the natural world is quite well understood. Based on current trends the earth is expected to warm by around 2°C to 4°C (3.6°F to 7.2°F) this century. Due to the incomplete understanding of the complex climate system, and uncertainty about future emissions, we can’t be sure how great this warming will be. The risk underlying this uncertainty is the key reason we need urgent action to reduce emissions that will insure against the possibility of catastrophic warming.
Find a way to live a comfortable and fulfilling life within such a tight carbon budget is a challenge that people around the world will need to take on board if we are to tackle climate change by reducing global emissions.
Calculate your footprint
Many people act to reduce their carbon footprint without ever calculating it. Although such action can produce serious reductions it can just as easily produce trivial ones. Calculating your footprint provides a way of telling the difference between the two. The better your calculation the more easily you will be able to prioritise which parts of your footprint are the most important.
Shrink your footprint
The most important thing to remember when shrinking your footprint is scale. Although your personal footprint is made up of hundreds of items, it is generally dominated by just a few. Making a change to these few items is likely to result in the biggest reductions, so it pays to think big.
Take further action
If you have made the effort to understand, calculate and shrink your own carbon footprint, you will no doubt be motivated to take further climate action. You will also realise that personal emission reductions are only part of the bigger picture. The scale of emissions reductions required globally require that governments, companies and other organisations must play there part in providing climate solutions.
If you make a serious effort to shrink your own carbon footprint you will be confronted with a number of challenges. Meeting your housing, travel, food, product and service footprint on a strict carbon budget is not easy. But this challenge is exactly what we must do both individually and collectively in order to limit the risks of climate change.
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Greenhouse gases are accumulating in Earth's atmosphere as a result of human activities, causing surface air temperatures and subsurface ocean temperatures to rise. Temperatures are, in fact, rising. The changes observed over the last several decades are likely mostly due to human activities, but we cannot rule out that some significant part of these changes is also a reflection of natural variability. Human-induced warming and associated sea level rises are expected to continue through the 21st century. Secondary effects are suggested by computer model simulations and basic physical reasoning. These include increases in rainfall rates and increased susceptibility of semi-arid regions to drought. The impacts of these changes will be critically dependent on the magnitude of the warming and the rate with which it occurs.
The mid-range model estimate of human induced global warming by the Intergovernmental Panel on Climate Change (IPCC) is based on the premise that the growth rate of climate forcing 1 agents such as carbon dioxide will accelerate. The predicted warming of 3°C (5.4°F) by the end of the 21st century is consistent with the assumptions about how clouds and atmospheric relative humidity will react to global warming. This estimate is also consistent with inferences about the sensitivity 2 of climate drawn from comparing the sizes of past temperature swings between ice ages and intervening warmer periods with the corresponding changes in the climate forcing. This predicted temperature increase is sensitive to assumptions concerning future concentrations of greenhouse gases and aerosols. Hence, national policy decisions made now and in the longer-term future will influence the extent of any damage suffered by vulnerable human populations and ecosystems later in this century. Because there is considerable uncertainty in current understanding of how the climate system varies naturally and reacts to emissions of greenhouse gases and aerosols, current estimates of the magnitude of future warming should be regarded as tentative and subject to future adjustments (either upward or downward).