Using Chemical and Isotopic Analyses to Improve Life-Cycle Assessments of the Natural Gas Consumed in California
Developing novel methods to estimate emissions from imported natural gas
The researchers have analyzed enough samples to define unique isotopic signatures of the fossil gas delivered to California through the major pipelines supplying the state. This analysis, used in tandem with results obtained from surveys quantifying fossil gas leakage from out-of-state gas fields being done through the project under agreement PIR-17-11, should help quantify the full greenhouse gas emissions associated with the imported fossil gas used in California.
This project is analyzing the chemical and isotopic content of fossil gas used in California pipelines from both in-state and out of state sources. The researchers are collecting samples and measuring the concentrations of methane, ethane, nitrogen, carbon dioxide, hydrogen sulfide, and other constituents in the collected samples. The researchers are also developing a database with this information and using it to determine whether the composition of the samples can be use to identify the source of the gas.
This project is developing a method to enable a better life-cycle assessment of the fossil gas consumed in California, thus enabling procurement from lower-emitting source basins and reducing the overall emissions intensity of gas use in the state.
Key Project Members
The Regents of the University of California on behalf of the Berkeley campus