Articles | Volume 21, issue 1
Atmos. Chem. Phys., 21, 393–413, 2021
https://doi.org/10.5194/acp-21-393-2021
Atmos. Chem. Phys., 21, 393–413, 2021
https://doi.org/10.5194/acp-21-393-2021

Measurement report 14 Jan 2021

Measurement report | 14 Jan 2021

Measurement report: Changing characteristics of atmospheric CH4 in the Tibetan Plateau: records from 1994 to 2019 at the Mount Waliguan station

Shuo Liu et al.

Data sets

Atmospheric methane at Mauna-Loa and Barrow observatories: Presentation and analysis of in-situ measurements E. J. Dlugokencky, L. P. Steele, P. M. Lang, and K. A. Masarie https://doi.org/10.1029/95JD02460

Data Summary: Greenhouse Gases and Other Atmospheric Gases WDCGG (World Data Centre for Greenhouse Gases) https://gaw.kishou.go.jp/static/publications/summary/sum43/sum43.pdf

Methane standard gases for atmospheric measurements at the MRI and JMA and intercomparison experiments H. Matsueda, Y. Sawa, A. Wada, H. Y. Inoue, K. Kazuto Suda, Y. Hirano, K. Tsuboi, and S. Nishioka https://doi.org/10.2467/mripapers.54.91

Long-term trends of greenhouse gases in regional and background events observed during 1998–2004 at Yonagunijima located to the east of the Asian continent Y. Tsutsumi, K. Mori, M. Ikegami, T. Tashiro, and K. Tsuboi https://doi.org/10.1016/j.atmosenv.2006.04.036

Assessment of recent advances in measurement techniques for atmospheric carbon dioxide and methane observations C. Zellweger, L. Emmenegger, M. Firdaus, J. Hatakka, M. Heimann, E. Kozlova, T. G. Spain, M. Steinbacher, M. V. van der Schoot, and B. Buchmann https://doi.org/10.5194/amt-9-4737-2016

High resolution temporal profiles in the Emissions Database for Global Atmospheric Research (EDGAR) M. Crippa, E. Solazzo, G. Huang, D. Guizzardi, E. Koffi, M. Muntean, C. Schieberle, R. Friedrich, and G. Janssens-Maenhout https://doi.org/10.2904/JRC_DATASET_EDGAR

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Short summary
We analyzed 26-year CH4 measurements at Mount Waliguan in the Tibetan Plateau, China. The CH4 increased ~ 133 parts per billion (ppb) with a rate of 5.1 ± 0.1 ppb yr-1 from 1994 to 2019. Major source regions were identified in northeast and southwest. The influence of human activities is more and more serious, and northern India has possibly become a stronger contributor than city regions were in the past. It has become urgent to control CH4 emissions in the Tibetan Plateau.
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