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Tag: emissions

Climate change: Worries over CO2 emissions from intensifying wildfires

Climate change: Worries over CO2 emissions from intensifying wildfires

Science
Rising numbers of extreme wildfires could result in a significant increase in CO₂ emissions, scientists warn.That could mean attaining the Paris climate agreement's goal of keeping global temperature rise well below 2C could become harder, they say. Present emission-cut pledges by countries are projected to increase the average global temperature rise by more than 3C by the end of the century.That would lead to dangerous climate change impacts, experts say.These include sea level rise, drought, wildfires, among other extreme events."We can't neglect the emissions from wildfires," says Ramon Vallejo, a scientist specialising on fire ecology with the University of Barcelona. "Particularly now that we are seeing intense wildfires all around the world....
Illegal emissions threaten to undermine UN's optimistic ozone report

Illegal emissions threaten to undermine UN's optimistic ozone report

Science
Nov. 8 (UPI) -- Despite news reports of an improving ozone layer, uncertainty over the impacts of illegal chlorofluorocarbon emissions threatens to undermine the longterm success of the Montreal Protocol. Earlier this week, the United Nations issued a press release confirming the Earth's ozone layer continues to heal. The release called the news a "ray of hope" in the wake of urgent warnings about the risks of global warming. But the report itself revealed serious concerns -- concerns parties to the Montreal Protocol are discussing this week at meetings in Quito, Ecuador. Last year, reports revealed a surprising uptick in CFC-11 emissions, an ozone-depleting gas banned under the Montreal Protocol. Followup investigations suggested the Chinese foam industry is responsible for the rise in C...
Greenhouse gas emissions on rice farms underestimated, study finds

Greenhouse gas emissions on rice farms underestimated, study finds

Science
Sept. 10 (UPI) -- Climate scientists and policy makers have underestimated the amount of greenhouse gas emitted by rice farms. New research showed rice farms emit significant amounts of nitrous oxide in addition to methane. In recent years, policy makers have worked with rice farmers to reduce methane emissions and conserve water resources by deploying intermittent flooding. As water resources become more scarce, more continually flooded rice farms are likely to adopt intermittent flooding methods. But new research -- published this week in the journal Proceedings. of the National Academy of Sciences -- suggests the reduction in methane emissions achieved by intermittent flooding is undermined by increases in nitrous oxide emissions. "Water management on rice farms needs to be calibrated ...
Emissions from energy-rich Norway on the decline

Emissions from energy-rich Norway on the decline

Business
Aug. 15 (UPI) -- The Norwegian government reported Wednesday that total greenhouse gas emissions were lower, with declines in pollution from road traffic leading the way. Statistics Norway, the government's record-keeping agency, published data showing total greenhouse gas emissions declined in 2017 by 1.7 percent from the previous year. By sector, manufacturing and mining had the greatest increase with 4.3 percent from 2016, while emissions from road transportation had the greatest decrease with 9.6 percent. There were 142,490 total electric cars registered in the country at the beginning of the year, up more than 40 percent from one year ago. Passenger vehicles made up 97 percent of that total. The Norwegian government said electric vehicles make up about 5 percent of the passenger flee...
Climate change: 'Hothouse Earth' risks even if CO2 emissions slashed

Climate change: 'Hothouse Earth' risks even if CO2 emissions slashed

World
It may sound like the title of a low budget sci-fi movie, but for planetary scientists, "Hothouse Earth" is a deadly serious concept.Researchers believe we could soon cross a threshold leading to boiling hot temperatures and towering seas in the centuries to come.Even if countries succeed in meeting their CO2 targets, we could still lurch on to this "irreversible pathway". Their study shows it could happen if global temperatures rise by 2 deg C.An international team of climate researchers, writing in the journal, Proceedings of the National Academy of Sciences, says the warming expected in the next few decades could turn some of the Earth's natural forces - that currently protect us - into our enemies. Each year the Earth's forests, oceans and land soak u...