article thumbnail

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

Green Car Congress

Net positive RF (warming) contributions arise from CO 2 , water vapor, NO x , and soot emissions, and from contrail cirrus (consisting of linear contrails and the cirrus cloudiness arising from them). Both radiative forcing (RF) and effective radiative forcing (ERF) terms and their sums are calculated for the years 2000–2018.

Climate 448
article thumbnail

PSI team develops web tool for consumers to compare environmental impact of passenger cars in detail

Green Car Congress

Depletion of fresh water reserves [m 3 ]. Deterioration of the ozone layer [kg CFC-11-eq.]. The user also selects the country where the vehicles are to be used—because this differentiates the electricity mix for electric cars—as well as the year, between 2000 and 2050, when the cars will be registered.

Mariner 435
article thumbnail

California 2017 GHG inventory shows 1.2% total drop from 2016; transportation sector emissions up 1%

Green Car Congress

Changes in emissions by Scoping Plan sector between 2000 and 2017. Transportation sector emission sources include combustion of fuels utilized in-state that are used by on-road and off-road vehicles, aviation, rail, and water-borne vehicles, as well as a few other smaller sources. Compared to 2016, California’s GDP grew 3.6%

2017 230
article thumbnail

Cutting Non-CO2 Pollutants Can Delay Abrupt Climate Change; The Fast Action Climate Agenda

Green Car Congress

HFCs are powerful greenhouse gases originally developed as substitutes for ozone-depleting chemicals. A binding legal agreement exists that can cut HFCs now—the Montreal Protocol ozone treaty—and many alternatives to HFCs have already been developed and are waiting for the right regulatory incentive from the Montreal Protocol to be deployed.

article thumbnail

Study finds paved surfaces in Houston worsen air quality

Green Car Congress

Houston, with a mix of petrochemical facilities, sprawling suburbs, and traffic jams that stretch for miles, has some of the highest levels of ground-level ozone and other air pollutants in the United States. The article is in press in the Journal of Geophysical Research-Atmospheres , a publication of the American Geophysical Union.

Houston 247
article thumbnail

UN Review of Recent Climate Research Concludes That Impacts Of Climate Change Coming Faster Than Anticipated

Green Car Congress

Losses of tropical and temperate mountain glaciers affecting perhaps 20-25% of the human population in terms of drinking water, irrigation and hydro-power. per year from 2000-2007. The hole in the ozone layer has had a cooling effect on Antarctica, and is partly responsible for masking expected warming on the continent.

article thumbnail

Critical review finds actual measurement data on segments of natural gas lifecycle sparse or lacking

Green Car Congress

Between 2000 and 2011, the number of producing gas wells in the US increased by 50%, reaching 514,637. This surge in exploration and production from unconventional sources has been accompanied by public concerns about various environmental issues—including air quality, water quantity and quality, and human health impacts.

Gas 218