Global Warming is an increase in the average temperature of the earth’s surface, considered a symptom and a consequence of climate change.
EFFECTS OF GLOBAL WARMING:
The world average temperature between 1850 and 2005 increased by approximately 0.76ºC. A further increase of 1.4°C to 5.8°C is projected for the year 2100.
The thickness of Arctic ice in late summer/early fall decreased by
The world average sea level rose from 12 to 22 cm during the last century.
WHAT CAUSES GLOBAL WARMING?
Leading scientists agree that the increasing concentration of greenhouse gases in the earth’s atmosphere is causing alterations in the climate. The main greenhouse gases are: water vapor, carbon dioxide (CO2), tropospheric ozone and methane.
Greenhouse gases act similarly to the glass roof of a greenhouse, trapping heat and warming the planet. Rising temperatures lead to climate change that includes effects such as sea level rise, changes in precipitation patterns that lead to flooding and drought, and the spread of vector-borne diseases such as malaria.
IS THERE A DIRECT RELATIONSHIP BETWEEN HUMAN ACTIVITY AND GLOBAL WARMING?
Scientists also agree that greenhouse gas emissions have been very intense since the Industrial Revolution, when human action on nature became intense.
In view of this, the international scientific community has warned that if world development, population growth and energy consumption based on fossil fuels continue to increase at the current rate, by 2050 carbon dioxide concentrations will have doubled compared to those before the Industrial Revolution. If the concentration of CO2 in the atmosphere continued to exceed 350 parts per million (ppm) it could have devastating climate consequences.
HOW TO SOLVE GLOBAL WARMING?
Above all, this means we have to stop burning fossil fuels and start using solar, wind and other renewable energy sources while making sure we provide the countries of the South with development opportunities. If we do this, the Earth will be leaving some of the carbon out of the atmosphere cyclically and we will end up going back to the safe limit. By decreasing the use of other fossil fuels and improving agricultural and forestry practices around the world, we could return to 350 by mid-century.