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Topic 16: Global dimming and Global warming, hazardous effect of green house gases on our planet earth
Global dimming and Global warming, hazardous effect of green house
gases on our planet earth
The scientific word, global
dimming, has contradicted the knowledge, scientific works and explanation of
the said global warming and its alarming efficacy, alertness and global
sensitisation. Global dimming is a scientific research that was not accepted by
scientist. The phenomenon was absolutely confusing and it takes deep scientific
correlation to believe its existence. It is also difficult to place the effect
of the two phenomenon (global warming and dimming) together, and find a balance
point that will be beneficial for human and its environment.
It is ironical to explain, even with
the high felt impact and intensity of the sun on the earth, some scientists have
decided to proof that the sun is losing her power! This is the basic proof of global dimming.
Global dimming was first
discovered 40 years ago by a British scientist Gerry Stanhill who was trying to
develop irrigation scheme in Israel. The project involves measuring the solar
radiation of the sun. According to Gerry on one of his global dimming
documentary , he explained how amazed he was by the result of the repeated
experiment. The result proves a shocking 22% reduction in sunlight radiation
over Israel as compared with his generated result 20 ago. Correlation data
results from other western countries have also proofed the viability of Gerry’s
He published out journals in 2001
explaining this effect, but it was to his disbelieved that scientists could not
reason out the effect just because it contradicts the world wide heavy spending
research on global warming.
To understand the effect of
global dimming, the principal causative agent as explained by environmentalist
is pollution. Air pollution from burning coal, oil and gas flaring and
residues, power stations and nuclear station releases particles of ash, gases
such as carbon dioxide and sulphur compounds to the air space as pollutants.
These gases are the major contributing element of this phenomenon.
To my little understanding of global dimming,
the causative agent is relative with global warming. The principal pollutants
responsible for global warming (green house gases) are also responsible for
global dimming. Researchers have made us understand the effect of the green
house gases on our planet and its futuristic damages, but for global dimming, how
does this effect works!
Does it imply the sun is losing
her strength while we still experience excessive heat as recorded in some part
of the world (Heat wave in 1980 killed 1250 people and in 1995 killed more than
700 people in USA) !
According to Professor Ramanathan
, the director of centre for atmospheric sciences, he further elucidates the
theory that air pollutants in the space are responsible for 10% reduction in sunlight
radiation on earth. He explains the process formation effect of how the
pollutants are attached with water molecules from the cloud. Naturally,
rainfall is produced by attached water vapour on naturally occurring airborne
particles. But in the event where polluted air is dominant in more tiny
particles that would have occurred naturally, they tend to form tiny rain
droplets in the cloud. The formed tiny rain droplets in the cloud therefore
reflect back the radiated sunlight into the space. This phenomenon reduces the
radiation strength of the sun . This is the simple phenomenon of global
dimming. The future hazardous effect of global dimming is eminent than what we currently
perceive. It’s tragic consequences reflect back on past feminine (1984 Ethiopian
famine), lack of rainfall (African rain belt monsoon lost), shift in the
monsoon thereby changing climatic conditions such as the tropical rain belt. (Climate
scientist Dr Leon Rotstayn, explains how the pollution generated from European
countries and north America affected the African monsoon).
above shows the average increase rate of temperature anomaly as represented
between 1860 and year 2000. It indicates a spike increase from year 1940 to
year 2000. This is the era of industrialisation that leads to emission of green
house gases .
What is the solution to this global
disaster! The problem, as explained, is regarded
as a man made situation of which the combine effect with global warming will be
extremely dangerous and hazardous to human kinds and other living organisms
that ever existed.
The main solution is to tackle
the root source of pollution in our individual environment and reduce its
drastic effect to the barest minimum.
Likewise, the said provided solution was
noticed to increase the radiation strength of the sun’s intensity on the earth.
This therefore calls for an increased and alarming global warming situation. Of
the fact, global dimming has been protecting the planet earth from serious
heating effect of global warming. Perfect method to balance the solution effect
with reduced heating that can lead to global warming.
In conclusion, as developing
safety personnel, environmental safety is very important in making the world a
safer and habitable planet to live in. The major air pollutants that we need to watch
out for in carrying out our daily activities ( industrial and personal) constitute
towards green house effect are the oxides of carbon and sulphur (green house
gases). The societal safety depends on
us. Let us contribute on this topic for vast understanding of effects of green
house gases on our planet. I will appreciate discussion more on the global
dimming aspect because it is a developing concept.