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Tag: carbon

Climate change: China’s forest carbon uptake ‘underestimated’

Climate change: China’s forest carbon uptake ‘underestimated’

Science
The researchers' analysis, based on ground and satellite observations, is .css-yidnqd-InlineLink:link{color:#3F3F42;}.css-yidnqd-InlineLink:visited{color:#696969;}.css-yidnqd-InlineLink:link,.css-yidnqd-InlineLink:visited{font-weight:bolder;border-bottom:1px solid #BABABA;-webkit-text-decoration:none;text-decoration:none;}.css-yidnqd-InlineLink:link:hover,.css-yidnqd-InlineLink:visited:hover,.css-yidnqd-InlineLink:link:focus,.css-yidnqd-InlineLink:visited:focus{border-bottom-color:currentcolor;border-bottom-width:2px;color:#B80000;}@supports (text-underline-offset:0.25em){.css-yidnqd-InlineLink:link,.css-yidnqd-InlineLink:visited{border-bottom:none;-webkit-text-decoration:underline #BABABA;text-decoration:underline #BABABA;-webkit-text-decoration-thickness:1px;text-decoration-thickness:1px...
Study: Renewables, not nuclear power, can provide truly low carbon energy

Study: Renewables, not nuclear power, can provide truly low carbon energy

Science
Oct. 5 (UPI) -- Nuclear energy programs around the world have failed to deliver on promises of carbon emissions reductions, according to a new survey. When researchers at the University of Sussex Business School, in Britain, and the ISM University of Management and Economics, in Lithuania, analyzed nuclear energy programs and renewable power operations in 123 countries over the last 25 years, they found the two tend not to co-exist all that well. Advertisement In low-carbon energy systems, the two programs crowd one another other out of the energy market, as well as diminish the efficiency of the other, researchers said. The latest findings, published Monday in the journal Nature Energy, suggest countries are less likely to meet carbon emissions reduction targets when nuclear energy progr...
Climate change: China aims for ‘carbon neutrality by 2060’

Climate change: China aims for ‘carbon neutrality by 2060’

Science
China will aim to hit peak emissions before 2030 and for carbon neutrality by 2060, President Xi Jinping has announced.Mr Xi outlined the steps when speaking via videolink to the UN General Assembly in New York.The announcement is being seen as a significant step in the fight against climate change. China is the world's biggest source of carbon dioxide, responsible for around 28% of global emissions.With global climate negotiations stalled and this year's conference of the parties (COP26) postponed until 2021, there had been little expectation of progress on the issue at the UN General Assembly.However China's president surprised the UN gathering by making a bold statement about his country's plans for tackling emissions. He call...
Study highlights carbon sequestration services provided by U.S. forests

Study highlights carbon sequestration services provided by U.S. forests

Science
Sept. 21 (UPI) -- Forests in the United States currently sequester approximately three decades worth of carbon dioxide emitted by the American fossil fuel industry, according to a new a study. What's more, forests and harvested wood products uptake approximately 14 percent of economy-wide CO2 emissions in the United States annually. Advertisement Despite declining carbon emissions in the United States, the contribution of forests to emissions offsets has remained stable. This, researchers say, suggests the ability of U.S. forests to absorb new carbon -- an ability driven largely by forest regrowth -- is slowly declining. To better understand the ability of afforestation and reforestation activities to improve carbon sequestration capabilities, researchers analyzed data from more than 130,...
Without carbon emissions reductions by 2050, mangroves unlikely to survive

Without carbon emissions reductions by 2050, mangroves unlikely to survive

Science
June 4 (UPI) -- Mangroves provide hundreds of millions of dollars in protections against coastal storms and flooding every year, but they could soon be gone if carbon emissions aren't significantly curbed in the coming decades. New research suggests that if CO2 emissions aren't drastically cut by 2050, mangroves are unlikely to survive the sea level rise that's expected to accompany a warming climate. Advertisement For the new study, published online Thursday in the journal Science, researchers analyzed sediment layers from the end of Earth's last deglaciation period, 10,000 years ago. Based on the analysis, scientists ran simulations to estimate the effects of sea level rise on mangroves under two scenarios, low and high carbon emissions. The models showed that under a high carbon scenar...