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Title: Methane Emissions from Natural Gas Vehicles in China
Contributors: Pan, Da
Tao, Lei
Golston, Levi
Miller, David
Zhu, Tong
Qin, Yue
Zhang, Yan
Mauzerall, Denise
Issue Date: 2020
Publisher: Princeton University
Abstract: Natural gas vehicles (NGVs) have been promoted in China to mitigate air pollution, yet our measurements and analyses show that NGV growth in China may have significant negative impacts on climate change. We conducted real-world vehicle emission measurements in China and found high methane emissions from heavy-duty NGVs (90% higher than current emission limits). These emissions have been ignored in previous emission estimates, leading to biased results. Applying our observations to life-cycle analyses, we found that switching to NGVs from conventional vehicles in China has led to a net increase in greenhouse gas (GHG) emissions since 2000. With scenario analyses, we also show that the next decade will be critical for China to reverse the trend with the upcoming China VI standard for heavy-duty vehicles. Implementing and enforcing the China VI standard is challenging, and the method demonstrated here can provide critical information regarding the fleet-level CH4 emissions from NGVs.
Appears in Collections:CEE Research Data Sets

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README.txt3.55 kBTextView/Download
calculate_ER.py11.52 kBTextView/Download
0610_10Hz_with_ratio_1s_final.csv57.16 MBTextView/Download
0611_10Hz_with_ratio_1s_final.csv52.56 MBTextView/Download
0612_10Hz_with_ratio_1s_final.csv21.73 MBTextView/Download
0610_NGV_encounter.csv596 BTextView/Download
0611_NGV_encounter.csv807 BTextView/Download
0612_NGV_encounter.csv379 BTextView/Download
gaussian_puff.py38.04 kBTextView/Download

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