The frustration felt all around the world at the inability to agree a meaningful deal
on global carbon dioxide emission leaves people looking for alternatives.
The evidence for this hypothesis is the well established physics of the greenhouse effect itself and the correlation of increasing
global carbon dioxide concentration with rising global temperature.
The carbon cost of such expansion, however, is low: to bring electricity to those without it would
increase global carbon dioxide emissions by less than 1 percent.
That includes
global carbon dioxide reaching 400 parts per million (ppm) for the first time earlier this year at 40 carbon dioxide - monitoring stations.
This is the same order of magnitude
as global carbon dioxide emissions in 2012 from fossil fuel burning, the paper notes.
However,
global carbon dioxide emissions from fossil fuels and cement production have continued to grow by 2.5 per cent per year, on average, in the past decade.
Heat wasn't the only arena where records were set: Preliminary data from NOAA suggests that 2015 saw the biggest single - year leap in
global carbon dioxide levels, and Arctic sea ice saw a record low winter maximum and its fourth lowest summer minimum.
Annual global carbon dioxide emissions from fossil fuels could drop slightly in 2015, according to a report from the Global Carbon Project led by a Stanford University researcher.
«Recent advances in understanding coral resilience are essential to safeguard coral reefs: A review of the literature points to the importance of
reducing global carbon dioxide emissions in addition to protecting or augmenting resilience mechanisms in the face of increased frequency of climate change impacts..»
Paris 2015 may be the last chance to agree on
global carbon dioxide reductions before there are so many greenhouse gases in the air and the oceans that things get really nasty.
Their analysis of the loopholes (see «The problem with voluntary targets ``, below)
suggests global carbon dioxide emissions in 2020 could soar above the widely quoted 55 billion tonnes.
Scientists at the Chinese Academy of Sciences have put together the
first global carbon dioxide maps based on data from the Chinese satellite TanSat.
Scientists at the Chinese Academy of Sciences have put together the first
global carbon dioxide maps based on data from the Chinese satellite TanSat.
To meet the two - degree goal, around 900 gigatons
less global carbon dioxide and equivalent pollution would need to be released this century than would have been the case if no action were taken.
At the recent G8 summit in Germany, the US agreed — along with Germany, France, the UK, Italy, Japan, Canada, Russia and the European Union — to aim to at least
halve global carbon dioxide emissions by 2050 under a UN framework.
As we recently reported in Nature Climate Change, significantly expanding sugarcane or lipidcane production in Brazil could reduce
current global carbon dioxide emissions by up to 5.6 percent.
Linda Y. Tseng, currently at Colgate University, Diego Rosso, and colleagues from the University of California, Irvine, note that when the Intergovernmental Panel on Climate Change (IPCC)
estimated global carbon dioxide (CO2) emissions, the data available to the organization did not include CO2 emission estimates from wastewater, which may contain fossil sources of carbon such as petrochemicals.
That figure may seem like small potatoes
when global carbon dioxide emissions last year approached 36 billion tons (with a carbon content of about 9.8 billion tons).
Put another way, the hunting and poaching of tropical animals could change the face of rainforests such as the Amazon, diminishing their ability to
store global carbon dioxide emissions by up to 20 percent.
Once global carbon dioxide emissions had been reduced to zero, some combination of atmospheric decay and carbon dioxide extraction, probably partially offset by some level of carbon dioxide re-release from the worlds oceans, might possibly reduce the atmospheric carbon dioxide concentration to comply with the NAAQS.
While volcanoes contribute only about 1 percent of the total
global carbon dioxide emitted, they provide a direct link between underground reservoirs of carbon in the mantle and atmospheric carbon dioxide.
Yesterday, NOAA scientists reported that in March 2015 the monthly
average global carbon dioxide level went above 400 parts per million for the first time.
It would mean that
global carbon dioxide pollution from fossil fuels may decline after 2026, a contrast with the International Energy Agency's central forecast, which sees emissions rising steadily for decades to come.
Olson and her team are asking the federal court in Oregon to order the US government to create a comprehensive plan to help
lower global carbon dioxide levels to 350 parts per million, which they claim is what the government's own scientists recommended in 1990.
«The connection to carbon dioxide levels is not clear,» he adds, «but we do raise the provocative idea that the last
time global carbon dioxide levels were rising in the past, adding iron to the equatorial Pacific Ocean may have acted to lower these levels to some extent.»
Some other statistics: About half of the world's tropical forests have been cleared (FAO) Forests currently cover about 30 percent of the world's land mass (National Geographic) Forest loss contributes between 6 percent and 12 percent of
annual global carbon dioxide emissions (Nature Geoscience) About 36 football fields worth of trees lost every minute (World Wildlife Fund (WWF)-RRB- Location.
Americans will have to pay much higher electricity prices despite the minuscule benefits of the Clean Power Plan, which
reduces global carbon dioxide emissions by less than 1 percent and global temperatures by 0.02 degrees Celsius by 2100, according to EPA's own models.
When asked if Climeworks is participating in a morally hazardous climate strategy, Gebald said that scientists are certain that global warming can only be addressed
if global carbon dioxide emissions drop to zero.
Phrases with «global carbon dioxide»