Sea levels are
rising several times faster than they have in the past 2,800 years and are
accelerating because of man-made global warming, according to new studies.
An international
team of scientists dug into two dozen locations across the globe to chart
gently rising and falling seas over centuries and millennia. Until the 1880s
and the world's industrialisation, the fastest seas rose was about 3 to 4cm a
century, plus or minus a bit.
During that time
global sea level really didn't get much higher or lower than 7.62cm above or
below the 2,000-year average. But in the 20th century the world's seas rose
14cm.
Since 1993 the rate
has soared to 30 cm and two different studies published Monday in the journal
Proceedings of the National Academy of Sciences, said by 2100 that the world's
oceans will rise between 28 to 131cm, depending on how much heat-trapping gas
Earth's industries and vehicles expel.
"There's no
question that the 20th century is the fastest," said Rutgers earth and
planetary sciences professor Bob Kopp, lead author of the study that looked
back at sea levels over the past three millennia.
"It's because
of the temperature increase in the 20th century which has been driven by fossil
fuel use."
If seas continue to
rise, as projected, another 45cm of sea level rise is going to cause lots of
problems and expense, especially with surge during storms, said study co-author
Stefan Rahmstorf of the Potsdam Institute for Climate Impact Research in Germany.
The link to
temperature is basic science, the study's authors said. Warm water expands.
Cold water contracts. The scientists pointed to specific past eras when
temperatures and sea rose and fell together.
If greenhouse gas
pollution continues at the current pace, both studies project increases of
about 57 to 131cm. If countries fulfill the treaty agreed upon last year in
Paris and limit further warming to another 2 degrees Fahrenheit, sea level rise
would be in the 28 to 56cm.
The news article
states that pollution by humans have caused the water level in the seas to
increase severely. Although the author doesn't mention it that much, we all
assume global warming and pollution is getting worse since this is what
increases the sea levels to rise. He explains most of it is caused by fossil
fuel use which we are assumed to know what it is. The author in the article
seems to be against pollution and seems to be warning us of what the outcome of
increasing global warming might bring. I never thought global warming was in
such a bad position where the ocean level rose to such a high number of 30 cm,
so I never really took the threats of global warming seriously, but after
reading the article I would agree with the author that the earth is in a
seriously dangerous situation since ocean levels can even rise up to 56 cm if
we continue our present activity. Looking at the statistics and the numbers the
author shares I would agree the earth has changed vastly and our activity with
fossil fuels have affected natural water levels and such. After reading this
article I would say in order to change the results and the amount of greenhouse
gas pollution the world uses so as to not experience the projected amount of
ocean level to rise. Our world should
change how we act and should differ in our current position.
"Global
Sea Levels Rising Faster Due to Global Warming." Al Jaeera. N.p., 23 Feb.
2016. Web. 23 Feb. 2016. <http://www.aljazeera.com/news/2016/02/global-sea-levels-rising-faster-due-global-warming-160222201945865.html>.
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