1. Intro
Global
warming is a consequence of mankind's impact on the Earth and the atmosphere.
It
is not to be confused with global warming, a term coined by Stephen Schneider,
who was skeptical of the idea of global warming and its causes.
Global
warming describes a long-term trend for the emission of CO2 into the atmosphere
from burning fossil fuels. In order to understand this in context, it needs to
be noted that CO2 is not emitted directly into the atmosphere, but is instead
produced by burning fossil fuels such as coal, petroleum, and natural gas.
The
amount of carbon dioxide (CO2) in the air has risen dramatically since 1820 in
response to humans' use of fossil fuels. Initially, this rise was attributed to
natural processes such as volcanic activity, but it has subsequently been shown
that human-induced emissions are responsible for the most recent increases in
atmospheric CO2 concentrations (thus setting off a new "greenhouse
effect" that continues even after humans no longer use fossil fuel)
2. Causes of Global Warming
The
word “global” is directly associated with the word “warming,” but what does it
mean?
Perhaps
you’re a scientist or a person who understands that global warming is caused by
human activities. Perhaps you have an idea what global warming is, but you
don’t know the details of its causes. Or perhaps you do know more than I do.
This, of course, is how things work when you are a part of the world.
According
to the Intergovernmental Panel on Climate Change (IPCC), there are three main
causes of climate change:
1.
Natural: The sun and other natural factors cause climate change over long
periods of time.
2.
Human: As humans begin using more fossil fuels and industrialize their
surroundings, they alter the climate by burning enormous amounts of energy. We
are destroying our planet with our usage habits and we must stop doing so if we
want to preserve it for future generations.
3.
Anthropogenic: The human use of fossil fuels and industrialization has caused
long-term climate change due to carbon dioxide (CO 2 ) from our combustion
activities (e.g., cars) in this case making up most of our CO 2 emissions per
year, which is also known as anthropogenic global warming (AGW).
Each
cause has its own unique impacts on the conditions within our atmosphere and
oceans, which in turn influence each other through varying levels of feedback mechanisms
in the system. A few key points about global warming that we can all agree upon
are 1) climate changes all over the planet; 2) all these changes are linked to
one another; 3) they will continue to occur regardless of whether we change or
not; 4) CO 2 -driven global warming is happening right now; 5) most scientists
agree that this kind of anthropogenic (i.e., human-caused) warming could become
irreversible if we don't act soon; 6) there is currently no convincing evidence
that any level of economic activity will significantly reduce future global
mean surface temperature rise; 7) without immediate action to cut carbon
emissions there could be further increases in temperature under certain
scenarios; 8) it's not just humankind that's causing this problem — it's also
animals, plants, volcanoes and even minor meteor storms that are having an
impact on us as well — thus making it impossible for us to completely eliminate
or ward off AGW altogether . . . . The bottom line is that at this
3. Effects of Global Warming
Global
warming has been a subject of controversy since its inception. The issue is
that there is no clear evidence that the greenhouse effect is occurring as
scientists think it should.
The
effect of global warming on humans has not been demonstrated. We need to find a
solution to global warming before it's too late.
There
is no reason to panic over the issue because it is an extremely complex debate
and there are many different opinions. There are those who say that global
warming is real and those who say that it isn't, but most of us don't know
exactly what science says. All we can do at this point in time is try to
reduce our impact on the environment through our actions, but also do what we
can by changing our energy usage habits as we go about our daily lives.
By: Nazneen Arif
The writer is a Student at Zanth Academy Jusak Turbat
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