dioxide

African biomass burning plumes seen from the wing the NASA DC-8 as it descends to Ascension Island during the ATom-1 mission. Credit: Samuel Hall, NSF NCAR The forests and grasslands of northern tropical Africa take in about as much carbon dioxide in the wet season as they release in the dry season, according to a new study based on observations from aircraft. The findings contradict earlier research that relied on satellite…

Variations in carbon dioxide absorption in the East Sea due to the southward movement of Arctic air. Credit: POSTECH The recent cold spell has plunged South Korean into a deep freeze, resulting in the closure of 247 national parks, the cancellation of 14 domestic flights, and the scrapping of 107 cruise ship voyages. While the cold snap brought relief by significantly reducing the prevalence of particulate matter obscuring our…

Environmental activists display placards during a demonstration at the venue of the COP28 United Nations climate summit in Dubai. The last time carbon dioxide in the atmosphere consistently matched today's human-driven levels was 14 million years ago, according to a large new study Thursday that paints a grim picture of where Earth's climate is headed. …

Ask an economist what something scarce should cost and they will normally say whatever someone is willing to pay for it. They will go on to say that the best way to establish that willingness is through markets. There are various systems that price carbon dioxide that way. But they do not provide the same answers. And nor do they tally with what economists think might actually be the right answer. To most people the cost of emitting a tonne of carbon dioxide appears…

The edge of the Greenland Ice Sheet, where recent melting has left bare ground. Credit: Kevin Krajick/Earth Institute A massive new review of ancient atmospheric carbon-dioxide levels and corresponding temperatures lays out a daunting picture of where the Earth's climate may be headed. The study covers geologic records spanning the past 66 million years, putting present-day concentrations into context with deep time.…

In this study, the researchers used state-of-the-art climate models and other tools to analyze the effect increasing CO2 has on a region of the upper atmosphere—known as the stratosphere—that scientists have long known cools with increasing CO2 concentrations. They found that this stratosphere cooling causes subsequent increases in CO2 to have a larger heat-trapping effect than previous increases, causing carbon dioxide to become more potent as a…

Credit: Pixabay/CC0 Public Domain The E-fuel project of VTT and partners has developed a concept for producing electrofuel from green hydrogen and carbon dioxide using a combination of different methods. On Nov. 21, this paraffinic E-fuel was tested for the first time in Finland on a diesel-powered tractor at AGCO Power's Linnavuori factory in Nokia. The new electrofuel is also suitable for vehicles that are difficult to…

Main components of the global carbon cycle, showing the rate of increase in atmospheric CO₂ and the extent of the land sink and ocean sink. Credit: Global Carbon Project 2022, CC BY The world's vegetation has a remarkable ability to absorb carbon dioxide (CO2) from the air and store it as biomass. In doing so, plants slow down climate change since the CO2 they take up does not contribute to global warming.…

The 2018 data shows how much CO2 the energy sector in Mongolia emitted, comparing two calculation methods. One is Mongolia's BUR2 using the bottom-up approach (left) and EDGAR (right). The other is the calculation result from this study using the hybrid approach (center) based on the top-down approach. The green represents CO2 emissions for all of Mongolia, while the red indicates emissions from Ulaanbaatar city. Note that for BUR and top-down data, the…

Artist impression of WASP-107b and its parent star. Credit: Illustration: LUCA School of Arts, Belgium/ Klaas Verpoest (visuals), Johan Van Looveren (typography). Science: Achrène Dyrek (CEA and Université Paris Cité, France), Michiel Min (SRON, the Netherlands), Leen Decin (KU Leuven, Belgium) / European MIRI EXO GTO team / ESA / NASAA team of astronomers used recent observations made with the James Webb Space Telescope to study the atmosphere of the nearby exoplanet WASP-107 b. Peering deep into the fluffy atmosphere of…