Meaning of global warming
What is global warming:
Global warming is called the phenomenon of gradual increase in temperatures experienced during the last century on Earth.
In this sense, according to the IPCC (Intergovernmental Panel on Climate Change), the average temperature of the planet increased by around 0.75 ° C throughout the 20th century, and the projections of an increase for the 21st century are between 2 ° C and 4 ° C.
Causes of global warming
Some experts in the field explain that the main cause of global warming is human activity. This has intensified in recent decades with the growth of the world population, leading to deforestation and an increasing dependence on fossil fuels.
See also Deforestation.
It is precisely the burning of these fuels that has generated the emission of gases into the atmosphere that cause a greenhouse effect, that is, that the gases accumulate in the atmosphere, preventing the Sun's heat from bouncing off the earth's surface and leaving to space.
For more information, see the article Greenhouse effect.
However, other scholars on the subject indicate that this theory is completely wrong, because they assure that climate change and global warming are natural phenomena and that efforts to reverse climate change will be futile. The climate as well as the variability in the tropospheric temperature have changed on many occasions since the origins of our planet.
What is truly worrying is that as a consequence of this (global warming), a series of natural processes and phenomena have been affected. Weather patterns change, affecting meteorological parameters, which influences our lives and those of the animals and plants with whom we share the planet.
See also Environmentalism.
Consequences of global warming
Some of the most obvious consequences of global warming, in this sense, are:
- the drought,
- melting ice (at the poles and glaciers),
- the rise in the level of ocean waters,
- the change in rainfall patterns, among others.
All this, of course, brings with it significant changes in the forms of life on the planet, such as the decrease in biodiversity as a result of the extinction of animal and plant species, or loss of agricultural production capacity of the human being, which would put at risk the food security of the population, among other things.
In the not too distant future, this problem can cause serious problems for all living beings on planet Earth, since by not allowing the sun's rays to exit after bouncing off the ground, it will cause temperatures to increase gradually, which can cause melting. of the glaciers of planet Earth, leading to the flooding of a large part of the world's cities, ending the possibilities of many species including that of human beings.
Global warming and climate change
We must not confuse global warming with climate change. Climate change refers to the phenomenon of modification of average temperatures, whether it is warming or cooling, that the planet Earth periodically experiences.
For its part, global warming is a consequence of the greenhouse effect, which in turn leads to increased temperatures in the Earth's climate system. In this sense, global warming is part of climate change only when it is related to the process of global warming.
See also Climate change.
Climate change prevention
There are several possibilities or forms of action that current scholars of the subject handle, who seek to prevent or manage the situation of global warming, within which we can name the following:
- Mitigation refers to reducing the magnitude of future climate change, and is one that seeks to reduce greenhouse gas emissions from the atmosphere.
- Adaptation, another response includes the adaptation of human beings as well as of the infrastructure and way of life itself to climate change, which is not yet feasible, due to the little importance that this thesis gives to the greenhouse gases that at some point any system and the adaptability of human beings can collapse.
- Climate engineering, also called geoengineering, is one that seeks the deliberate modification of the climate, has been the object of study by NASA. These techniques under investigation usually deal with the categories of solar radiation management and carbon dioxide removal, although a few different strategies have also emerged.