 |
| Elsie, one of two Stensgard family dogs,
sands on the earthen and sandbag dike surrounding the Stensgard home,
not pictured, which overlooks a flooded outbuilding as the Red River
continues to rise, Wednesday, March 25, 2009 in Fargo, N.D. Due to the
flooding, the Stensgard home can only be reached by boat. (AP
Photo/Carolyn Kaster; Courtesy: Boston.com) |
My first contact with anything
related to climate change was in secondary school as far back as a decade ago,
when one of my teachers made me read something about chlorofluorocarbons (CFCs)
and their effect on the ozone layer. Reading through my chemistry text then
about how CFCs react with ozone (O3), leading to the formation of oxygen (O2)
and Hypochlorite (HOCl), it never made much sense other than just one of the
myriads of chemical equations I was made to memorize then. However, recent
events from as mild as changes in rainfall patterns, droughts and floods to as
severe as melting icecaps, rise in sea levels, and frequent heat waves bring
one’s mind back to reality – our world is changing. The environment is transforming
and becoming unpredictable. The changes threaten development in many parts of
the world.
The issue of climate change is
one of the things that have taken over the world stage today. Over the past
decade, it has been called everything from “the greatest challenge man has ever
faced” to the “greatest hoax ever”. Organizations have been established,
countless meetings have been held, several conferences convened, all in a bid
to halt the change. But despite all of these, it has been predicted that climate
change would continue into the future – the future of our unborn generations –
all because of the way we live our lives.
What
is Climate Change?
Before going too deep into the
intricacies of this issue, it is necessary to clarify some concepts. The term
“climate change” has been used to mean a change in the existing climatic
conditions as a result of human activities. However, the most appropriate use
of the term is a change in the properties of the climatic system occurring over
a long period of time, usually over decades or centuries. Changes which occur
over a short period such as the El Niño effect does not refer to climate
change. In today’s usage of words, climate change has become the same as
“global warming”. Nonetheless, it is important to keep at the back of our minds
that while global warming refers to an increase in surface temperatures,
climate change encompasses global warming and every other thing that an
increase in the emission of greenhouse gases would affect.
What
causes climate change?
As our countries become more
and more industrialized, the rate at which we produce harmful substances
increases, especially the popular greenhouse gases – carbon dioxide, nitrous
oxide, methane and fluorinated gases. The rural dweller that cooks her meals
with firewood, the urban citizen that causes air pollution with the emissions
from his car engine, and the industries that release large amounts of smoke
into the atmosphere all contribute to the release of greenhouse gases. These
gases when released go up and surround the earth like a blanket, trapping large
amounts of energy within the atmosphere, leading to increased temperatures.
This is what is known as the greenhouse effect with serious implications on the
health of man and his surrounding ecosystem.
Effects
of climate change
The truth remains, no one is
spared from the effects of climate change. We have become so used to the stable
climate over the years such that a warming environment will lead to changes in
our weather, water supplies, environment, agriculture, transport and power
systems, and even our health, changes that we would not find palatable at all.
The recent heat waves in the USA, and severe storms and flooding in many other
parts of the world are some of the evidences of what we are dealing with right
now. These events impede sustainable development.
In Nigeria, the massive floods
in Lagos and the East come to mind. There have been more rainfalls this year
than in any time in history of Nigeria. As floods hit the south, desert
encroachment consume arable lands in the North. Water scarcity and drought
worsen in the North and affects adjoining parts of West Africa. Food scarcity
and famine hit East Africa claiming the lives of many women and children. These
are some of the devastating effects of climate change.
One thing about the climate is
that some changes are unavoidable. There is nothing we can do about ocean
variability or orbital variations; neither do we have any power over solar
isolation, plate tectonics or volcanic eruptions with the associated release of
harmful gases and particulate matter into the atmosphere. However, we can
reduce the amount of greenhouse gases which each and every one of us
contributes daily. We can make choices that reduce environmental pollution. We
can also prepare ahead for likely impacts of climate change so as to minimize
their effects on our ecosystem and our health.
Just as physicians would say
that the management of a disease is “multidisciplinary”, the “management” of
climate change is multifaceted. We all have our parts to play in this. Talk a
walk instead of driving your car if need be. Ride a bicycle, if you do not like
to walk. You can start a group in your local community that creates awareness
about climate change. Report any company that does not comply with
environmental laws to appropriate authorities. You can mobilize people to
ensure that government implements international conventions to reduce effects
of climate change.
Every human being on earth at
every point in time deserves and retains the right to live in a clean future.
But in reality, there are two options: to live in a polluted environment with
the resulting vicious cycle of climatic changes, or make the world a clean and
safe place that the generations yet unborn can live in. The choice remains
ours.
