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SMUD Board of Directors adopts climate emergency declaration; carbon neutrality by 2030

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The SMUD (2020 Sacramento Municipal Utility District) Board of Directors adopted a climate emergency declaration that commits to working toward an ambitious goal of delivering carbon-neutral electricity by 2030. Furthermore, SMUD has reduced the carbon intensity of its power mix, which is now 50% carbon-free on average.

Carbon 268
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UGA study finds black carbon aerosols from GDI engines will worsen public health, climate; need for GPFs

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The gasoline direct injection (GDI) engine is one of the most prominent technologies car manufacturers adopted to achieve the fuel economy and carbon dioxide emission goals established in 2012 by the US Environmental Protection Agency. A strong absorber of solar radiation, black carbon exhibits significant climate warming properties.

Climate 348
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UCL-led study finds climate impact caused by growing space industry needs urgent mitigation

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The rapidly growing space industry may have a greater climate effect than the aviation industry and undo repair to the protective ozone layer if left unregulated, according to a new study led by UCL and published in the journal Earth’s Future as an open-access paper. The space industry is one of the world’s fastest growing sectors.

Climate 428
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Study: 2/3 of aviation climate impact due to emissions other than CO2

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of the human-made climate impact; two-thirds of this impact are caused by emissions other than CO 2 , according to a new study by researchers in Europe and the US. Schematic overview of the processes by which aviation emissions and increased cirrus cloudiness affect the climate system. Aviation accounts for 3.5% —Lee et al.

Climate 448
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Latest GHG Inventory shows California remains below 2020 emissions target; much steeper rate of GHG reductions required

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California’s latest greenhouse gas data shows that while the state continues to stay below its 2020 target for emissions, there is much more work to do to achieve carbon neutrality by 2045. Source: California Air Resources Board (ARB). That remains six million metric tons below the 2020 target. Source: CARB GHG Inventory.

2020 221
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All-in-one solar-powered tower makes carbon-neutral kerosene in the field at pilot-scale

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The aviation sector is responsible for about 5% of global anthropogenic emissions causing climate change. That makes the fuel carbon neutral, especially if we use CO 2 captured directly from the air as an ingredient, hopefully in the not-too-distant future. —Aldo Steinfeld. Zoller et al. 2022.06.012.

Solar 446
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New model framework for improving predictions of black carbon’s radiative effect on climate

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Black carbon particles absorb heat in the atmosphere. For years, scientists have known that these particles are affecting Earth’s warming climate, but measuring their exact effect has proved elusive. Absorption by black carbon strongly affects regional and global climate. —Fierce et al.

Climate 269