article thumbnail

EIA: California drought will decrease hydropower, increase natural gas use and CO2 emissions

Green Car Congress

The extended drought in California could cut the state’s summer electricity generation from hydropower nearly in half compared with normal precipitation conditions, according to an analysis by the US Energy Information Administration (EIA). Figure 2 data source: US Energy Information Administration, Electric Power Monthly.

article thumbnail

Researchers capture first images of CO2 emissions from commercial aircraft engine using chemical species tomography

Green Car Congress

Image Credit: Gordon Humphries, University of Strathclyde. The approach provides real-time spatially resolved information for carbon dioxide emissions from a large-scale commercial engine, said research team leader Michael Lengden from the University of Strathclyde in the UK. —Michael Lengden.

article thumbnail

NZ study shows cycle lanes and walkways cut car use, reduce emissions

Green Car Congress

Researchers in New Zealand have shown that investing in cycle lanes and walkways encourages people to drive less and cuts carbon emissions. The researchers from the University of Otago, Wellington and Victoria University studied the impact of new cycling and walking paths built in New Plymouth and Hastings in 2011.

Emissions 283
article thumbnail

Monash study on solar-driven electrolysis for green hydrogen production cautions on life-cycle emissions and EROI

Green Car Congress

Researchers at Monash University in Australia have conducted a lifecycle analysis and net energy analysis (LCA/NEA) of a hypothetical large-scale solar-electrolysis plant for the production of green hydrogen. The NWIS comprises mostly gas-fired generation and has a GHG emission factor of 620 g CO 2 -e kWh -1. —Palmer et al.

Solar 459
article thumbnail

University College Dublin Study finds Prius IV hybrids drive >60% of the time in zero-emissions mode under Irish conditions

Green Car Congress

A new study carried out by University College Dublin (UCD) academics has found that under typical Irish commuting conditions, the Toyota Prius IV (fourth-generation) hybrid ( earlier post ) drives in zero emissions mode (ZEV) for significantly more than half (62%) of the time and more than 40% (40.4%) of the distance covered.

Prius 191
article thumbnail

Researchers map CO2 emissions for entire Los Angeles Megacity to help improve environmental policymaking

Green Car Congress

For example, about 60 percent of roadway emissions come from 10 percent of the roads. We can identify the ones with the highest emissions and track how well efforts to reduce those emissions are working. It’s the first megacity for which we’ve quantified emissions down to the scale of every building and roadway.

article thumbnail

TRUE US database shows emissions characteristics of US fleet

Green Car Congress

To complement its work on real-world emissions in Europe, TRUE has compiled remote sensing data from the states of Colorado and Virginia and the University of Denver to investigate the emissions of US light-duty vehicles. By 2018, the percentage of the fleet responsible for 50% of total NO emissions had decreased to 11%.

Fleet 221