Greenhouse gas concentrations record high

Added On November 10, 2015

A new report by the World Meteorological Organization says the amount of Greenhouse gases in the atmosphere hit record high in 2014.
Scientists warn further worsening without immediate move.
According to the report, greenhouse effect expanded 36 percent over the past quarter of the century.
The WMO report focuses on atmospheric concentrations of greenhouse gases, not emissions. 
Emissions represent what goes into the atmosphere, whereas concentrations represent what remains in the atmosphere after complex interactions.
"It is very important to realize that whatever we emit in the atmosphere will stay, of course not forever, but for a very long time, for centuries. So, this emphasizes why it is important to act quickly, because if we don't act quickly, what we emit will affect the next generation."
Among the emissions, carbon dioxide, methane and nitrous oxide are all long-lived greenhouse gases, which are also the main culprits for climate change.
Take carbon dioxide for an example. 
The concentration of the gas was 143 percent of pre-industrial levels in 2014.
This gas can remain in the atmosphere for hundreds of years and even longer in the ocean.
And all these emissions, including the past and the current, will have a cumulative impact on both global warming and ocean acidification.
So according to the WMO, the world needs to move now or it will face severe consequence.
SOUNDBITE (ENGLISH) OKSANA TARASOVA, Chief WMO Atmospheric Environment Research Division
"The aim now is to act fast, to avoid the worst possible cases. And it is not just 2 degrees, life doesn't end after we have reached 2 degrees, we can reach even higher temperatures if we do nothing."
The 2 degree cap is also on the agenda of an international gathering on climate change scheduled for the end of the month in Paris.
The WMO report will provide a scientific base for decision-making ahead of the climate change negotiations.