Kategorie: Media

New pathway of diatom-mediated calcification and its impact on the biological pump

by Science China Press, phys.org, September 25, 2023

„Researchers have discovered that during the growth process of Skeletonema costatum, there is a significant decrease in total alkalinity (TA) and [Ca2+] in the bulk medium. The precipitated white particles were confirmed to be aragonite crystals through X-ray diffraction. Scanning electron microscope images revealed that the diatom cells were enveloped by spherical crystals with diameters ranging from 40 to 70 μm, forming aggregates of S. costatum and aragonite.“


Carbon removal: Why ambitious ’no nonsense‘ plans are vital to limit global heating to 2°C

by Christian Turney, Lennart Bach, Philip Boyd, The Conversation on phys.org, September 24

„Despite the changes we are seeing, global efforts to cut emissions fall well short of what’s needed to keep heating to less than 2℃, let alone the more ambitious Paris Agreement target of 1.5℃. This creates an urgent need for the purposeful removal of atmospheric CO₂ as well as cuts in emissions. In a recent article in Nature, we argue for a different approach to pricing carbon. It should take into account how it is removed from the atmosphere, for how long, and with what confidence. This will help fund the most promising technologies for reaching net-zero carbon emissions by 2050.“


Only 0.5% of Companies with SBTi Targets Have Purchased Carbon Removal

by Robert Höglund, cdr.fyi, September 21, 2023

„Only 32 companies that have committed or validated Science-based targets have purchased durable carbon removal, according to our analysis at the carbon removal market platform CDR.fyi. There is a great need to start scaling the carbon removal industry now. All companies need some level of carbon dioxide removal (CDR) to reach their net zero targets, but today, only a handful are taking on the responsibility to grow the sector.“


Carbon Dioxide Removal Research and Development Act of 2023

by Katie Lebling, wri.org, September 14, 2023

„In order to reach the expected scale of carbon removal needed to meet national and global climate goals, increased investment in research, development and demonstration is needed to develop a robust portfolio of natural and technological approaches. A broad and diversified portfolio of carbon removal approaches will help reduce cost and risk and balance tradeoffs associated with each approach. […] The Carbon Dioxide Removal Research and Development Act of 2023 — introduced by Senator Brian Schatz (D-HI) in the U.S. Senate and Rep. Paul Tonko (D-NY) in the U.S. House of Representatives — would take significant steps toward reaching this vision. „


Experts call for global moratorium on efforts to geoengineer climate

Fiona Harvey, theguardian.com, 14 Sep 2023 05.35 BST

„Governments should place a moratorium on efforts to geoengineer the planet’s climate, as greenhouse gas emissions continue to rise and the climate crisis takes hold, a panel of global experts has urged. […] In a report published on Thursday, the Climate Overshoot Commission called on governments to phase out fossil fuels, put more resources into adapting to the impacts of extreme weather, and start using technologies to remove carbon dioxide, such as carbon capture and storage and the capture of carbon directly from the air.“


Quantifying enhanced weathering

by Iris Holzer, Noah Sokol, Eric Slessarev, Kata Martin, Freya Chay, on carbonplan.org, September 11, 2023

„Researchers, companies, and policymakers are directing more attention toward enhanced weathering on agricultural fields as a low-cost and easy-to-implement approach to carbon dioxide removal (CDR). Although spreading rocks on fields might sound straightforward, demonstrating that it actually removes carbon from the atmosphere is surprisingly complex. Here, we introduce a new tool that catalogs quantitative methods which could contribute to enhanced weathering measurement, reporting, and verification (MRV).“


CO2 Energie AG, South Pole and Airfix launch largest biomass carbon removal and storage project in Switzerland

southpole.com, September 7, 2023

„The company CO2 Energie AG, the project developer Airfix and the climate company South Pole – with the contribution of carbon capture pioneers Carbon Impact – have started a ground-breaking project for CO₂ capture and geological storage. The project is set to become the largest of its kind in Switzerland to date with 21,800 tonnes of CO₂ to be removed over five years.“