Energy Industry Methane Emissions Trajectory Analysis in China until 2050

Abstract

Methane (CH4) is an important greenhouse gas. There is increasing attention to CH4 abatement strategies because of its contribution to short-term warming and strong benefits of decreasing CH4 emissions. China greenhouse gas inventory methods are used to predict CH4 emissions from the energy industry and to assess the potentials of CH4 abatement policies and techniques by 2050. The NDC scenario results show using oil and gas as transitional clean energy sources instead of coal will increase CH4 emissions from oil and gas industries at least 70%, but CH4 emissions from the coal industry will decrease 45%, meaning total CH4 emissions from the energy industry will continually decrease at least 30% in 2030 compared with 2020. Energy-related CH4 emissions might peak around 2025, ahead of CO2 emission peaking. CH4 emissions will then decrease slightly and decrease markedly after 2030. Emissions in 2050 are expected to be 32% lower than emissions in 2020. In an extreme scenario, emissions may be 90% lower in 2050 than in 2020. It is suggested that the verification system for the energy industry’s CH4 emission accounting at the national level be improved and CH4 control targets in line with national emission targets and the “14th Five-Year Plan” development stage be formulated.

Theoretical and experimental investigation of on‐chip silicon‐on‐insulator waveguide methane sensor

“…10 CH 4 is also the main gas species causing greenhouse effect, seriously affecting the global climate. 11 Currently, the commonly used types of CH 4 sensors include electrochemical gas sensors, semiconductor gas sensors, catalytic combustion gas sensors, and optical gas sensors. [12][13][14][15] Compared to other gas sensing techniques, optical gas sensors based on infrared absorption spectroscopy have the advantages of high sensitivity, good selectivity, and noninvasive.…”

“…As the primary atmospheric gas component in coal mine, when CH 4 reaches a certain concentration level, it may cause combustion or even explosion 10 . CH 4 is also the main gas species causing greenhouse effect, seriously affecting the global climate 11 . Currently, the commonly used types of CH 4 sensors include electrochemical gas sensors, semiconductor gas sensors, catalytic combustion gas sensors, and optical gas sensors 12–15 .…”