article thumbnail

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. The results are expected in summer 2019.

Climate 278
article thumbnail

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

Green Car Congress

The study’s analysis showed those concerns are overstated, noting it found no statistical difference between the two technologies for ride-hailing companies. That said, California passed legislation in 2018 that compels transportation networking companies to become cleaner, and part of that involves electrification. —Alan Jenn.

Davis 239
article thumbnail

CARB research seminar on new car buyers’ valuation of ZEVs

Green Car Congress

Ken Kurani of the UC Davis Institute of Transportation Studies will present findings from a study commissioned by the California Air Resources Board (ARB) assessing consumer attitudes, barriers, and motivators toward purchasing zero, near-zero, and low-emission vehicles.

Davis 150
article thumbnail

Study links exposure to PM2.5 exposure to brain atrophy, memory decline in older women

Green Car Congress

Women in their 70s and 80s who were exposed to higher levels of air pollution experienced greater declines in memory and more Alzheimer’s-like brain atrophy than their counterparts who breathed cleaner air, according to a new study by researchers at USC, Wake Forest School of Medicine, and their colleagues at other institutions.

Pollution 186
article thumbnail

California ARB study finds commuters’ exposures to air pollution greatly depends on mode of travel; light rail, personal vehicles the lowest

Green Car Congress

The mode of travel you take on your daily work commute can make a big difference in your exposure to air pollution, according to a new study by researchers at the California Air Resources Board (ARB). One important finding is the need for more light rail and dedicated bike paths, as well as cleaner locomotives. Click to enlarge.

Pollution 150
article thumbnail

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. Renewable UK, Wind Energy Statistics Explained, available at: [link] , accessed 12 November, 2020. Earlier post.).

Grid 332
article thumbnail

Study: consumer products overtake transportation as largest source of VOCs air pollution in cities

Green Car Congress

We consider four key pieces of evidence to support this finding: (i) energy and chemical production statistics; (ii) near-roadway measurements of transportation emissions, together with laboratory testing of chemical products; (iii) ambient air measurements away from roads; and (iv) indoor air measurements. McDonald, Joost A. Cappa, Jose L.

Pollution 264