Impacts of human activity on climate

The impact of human activity has been changing the volume and proportion of greenhouse gases in the atmosphere. This process started at the beginning of the Industrial Revolution and since then, the CO2 in the atmosphere has increased by about 20 per cent.

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Since the beginning of industrialization, a large quantity of CO2 has been released into the atmosphere through the carbon, oil and gas burning.At the beginning of the Industrial Revolution in the late 1700s, the quantity of CO2 started to increase, getting up the highest levels during the last 50 years.

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A very efficient technique to get these data consists of analysing the content of this gas from the ice cores, dug out at about two kilometres deep.

These bubbles can help scientists study the presence of carbon dioxide and therefore estimate the atmospheric levels of carbon dioxide dating back 160 000 years.

These bubbles can also help measure the oxygen isotope concentrations trapped and their deviation from the atmospheric values in order to know their changing rate. Since this depends on the temperature, estimates can be made on the surface temperature in the Antarctica when the ice was formed

At the same time as the use of fossil fuels in industrial processes increased, wide forest surfaces were cut down or burnt in order to get new areas for agriculture and livestock.

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