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DLR: cleaner aircraft emissions reduce the climate impact of contrail cirrus

Green Car Congress

Hatched areas indicate locations in which the difference is statistically significant at a 95% confidence level. and d contrail cirrus net radiative forcing due to a 80% reduced initial ice crystal number (low minus present-day initial ice crystal number). Burkhardt et al.

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Study finds some improved cookstoves may emit more black carbon pollution than traditional mud cookstoves

Green Car Congress

The first real-world, head-to-head comparison of improved cookstoves (ICs) and traditional mud stoves has found that some ICs may at times emit more of the black carbon particles that are linked to serious health and environmental concerns than traditional mud stoves or open-cook fires. —Kar et al.

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GCP Carbon Budget Finds Anthropogenic CO2 Emissions Rose 2% in 2008 Despite Global Financial Crisis; Natural Sinks Not Keeping Pace With Increasing Emissions

Green Car Congress

Despite the economic effects of the global financial crisis (GFC), carbon dioxide emissions from human activities rose 2% in 2008 to an all-time high of 1.3 tonnes of carbon per capita per year, according to a new paper published by an international team of 31 scientists in Nature Geoscience. Global carbon budget 2008.

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UC Davis researcher finds ride-hailing EVs offer triple the emissions benefits of a personally owned EV

Green Car Congress

Replacing a gasoline-powered ride-hailing vehicle with an electric vehicle can deliver three times the carbon benefits of a personally owned electric vehicle, according to a study by a University of California, Davis, researcher of Uber and Lyft data. The paper is published in the journal Nature Energy. —Alan Jenn.

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Electric cars cleaner than any gas-only car for 97 percent of U.S. drivers

Green Car Reports

But unless they're charged entirely on renewable energy—still statistically unlikely today—there are emissions associated with generating the electricity used to charge their batteries. For several years now, rigorous "wells-to-wheels" analyses of the carbon-dioxide emissions.

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Opinion: Reinventing fuel-based power for a more secure and resilient grid

Green Car Congress

The growth of global industrialization, increasing demand on energy resources and rising carbon emissions are deepening the need for energy infrastructure that is increasingly green, distributed, flexible, and resilient. Grid balancing and resilience is not a challenge borne out of our transition to a net-zero carbon economy.

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California ARB: GHG emissions fell below 1990 levels for first time in 2016; down 13% from 2004 peak; transportation emissions up 2%

Green Car Congress

Senate Bill 32, signed in 2016, requires the state to go even further than AB 32 and cut greenhouse gas emissions 40% below 1990 levels by 2030—the most ambitious carbon goal in North America. The carbon intensity of California’s economy has dropped 38% since the 2001 peak and is now one-half the national average.