Because these lands play such a vital role as carbon sinks, it's no surprise that their destruction is partly responsible for the emissions from land use changes that add up to nearly 18 percent of
the total global warming effect.
Not exact matches
Methane gas is second behind carbon dioxide in contributing to the greenhouse
effect and
global warming; cow flatulence and excretion account for 20 percent, or 100 million tons, of the
total annual
global methane emissions.
A further factor is the rising sea level due to
global warming, an
effect that now also
totals more than three millimeters per year and is responsible for another 15 centimeters of submerged land.
Since 2004, researchers in NOAA's
Global Monitoring Division have released the Annual Greenhouse Gas Index: a single value that compares the
total warming effect of each year's concentrations of heat - trapping gases to 1990 levels.
This is bad news, because if it was
warming the
total effects of
global warming on the surface would be potentially less, or at least, stretched out over a longer period of time.
«All 18 periods of significant climate changes found during the last 7,500 years were entirely caused by corresponding quasi-bicentennial variations of [
total solar irradiance] together with the subsequent feedback
effects, which always control and totally determine cyclic mechanism of climatic changes from
global warming to Little Ice Age.»
In the Washington Times in 2007 he said that his film would change history, and predicted that «in five years the idea that the greenhouse
effect is the main reason behind
global warming will be seen as
total bunk.»
In m y opinion, we need a new moniker to describe the
total effect of
global warming (Climate Change is just way too passive for my taste.).
(Part of the How to Talk to a
Global Warming Skeptic guide) Objection: Taking into account the logarithmic
effect of CO2 on temperature, the 35 percent increase we have already seen in CO2 concentrations represents about three - quarters of the
total...
Recently there have been some studies and comments by a few climate scientists that based on the slowed
global surface
warming over the past decade, estimates of the Earth's overall equilibrium climate sensitivity (the
total amount of
global surface
warming in response to the increased greenhouse
effect from a doubling of atmospheric CO2, including amplifying and dampening feedbacks) may be a bit too high.
What is evident is that carbon dioxide still has the edge in
effecting global warming - according to Braathen, it contributed 91 % of the
total greenhouse gas heating
effect in the past 5 years.
While methane and nitrous oxide make up much smaller portions of
total greenhouse gas emissions, these gases are still important factors in the climate crisis, in part because they each have stronger
global warming effects than carbon dioxide and also because they constitute an increasing portion of
total emissions.
Taking adaptation into account, rich countries will adapt to the negative impacts of
global warming and exploit the positive changes, creating a
total positive
effect of
global warming worth about half a percentage point of GDP.