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Volume 16 Issue 2

Apr.  1999

Article Contents
Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 1999 >  16(2): 242-250

Modeling the Sudden Decrease in CH4 Growth Rate in 1992

  • 1.

    State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029,State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029


doi: 10.1007/BF02973085

  • A two-dimensional global chemistry model is developed to study the distribution and long-term trends of methane. The model contains 34 species and 104 chemical and photochemical reactions. Using the model, the long-term trends of CH4, CO and OH in at-mosphere are simulated, comparison between the model and observations shows that the simulation is successful. Experiments are done to investigate the causes of dramatic decrease in the growth rate of CH4, in 1992 such as OH increase due to stratospheric ozone depletion, decrease of tempera?ture in the troposphere due to Mount Pinatubo eruption and descendent of CH4 sources fluxes. A new explanation is proposed and verified by this model that the decrease of CO emission plays an important role for the abnormal growth rate of CH4 in 1992. We find that the de?creases of CH4 and CO emissions are the main reasons for the sudden decrease of growth rate of CH4 in 1992, which account for 73% and 27% respectively.
  • [1] ZHANG Dingyuan, LIAO Hong, WANG Yuesi, 2014: Simulated Spatial Distribution and Seasonal Variation of Atmospheric Methane over China: Contributions from Key Sources, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 283-292.  doi: 10.1007/s00376-013-3018-y
    [2] Ding Aiju, Wang Mingxing, 1996: Model for Methane Emission from Rice Fields and Its Application in Southern China, ADVANCES IN ATMOSPHERIC SCIENCES, 13, 159-168.  doi: 10.1007/BF02656859
    [3] Zhang Ming, Zhang Lifeng, 2002: Semi-Circle Theorem of Unstable Spectrum Distribution of Heterotropic Perturbation and the Upper Bound Estimation of Its Growth Rate, ADVANCES IN ATMOSPHERIC SCIENCES, 19, 35-44.  doi: 10.1007/s00376-002-0032-x
    [4] BI Yun, CHEN Yuejuan, ZHOU Renjun, YI Mingjian, DENG Shumei, 2011: Simulation of the Effect of an Increase in Methane on Air Temperature, ADVANCES IN ATMOSPHERIC SCIENCES, 28, 129-138.  doi: 10.1007/s00376-010-9197-x
    [5] Chuanfeng ZHAO, Yanan LI, Fang ZHANG, Yele SUN, Pucai WANG, 2018: Growth Rates of Fine Aerosol Particles at a Site near Beijing in June 2013, ADVANCES IN ATMOSPHERIC SCIENCES, 35, 209-217.  doi: 10.1007/s00376-017-7069-3
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    [8] Chuanjie YANG, Guang LI, Lijuan YAN, Weiwei MA, Jiangqi WU, Yan TAN, Shuainan LIU, Shikang ZHANG, 2022: Effects of Plant Community Type on Soil Methane Flux in Semiarid Loess Hilly Region, Central Gansu Province, China, ADVANCES IN ATMOSPHERIC SCIENCES, 39, 1360-1374.  doi: 10.1007/s00376-022-1169-4
    [9] Denghui JI, Minqiang ZHOU, Pucai WANG, Yang YANG, Ting WANG, Xiaoyu SUN, Christian HERMANS, Bo YAO, Gengchen WANG, 2020: Deriving Temporal and Vertical Distributions of Methane in Xianghe Using Ground-based Fourier Transform Infrared and Gas-analyzer Measurements, ADVANCES IN ATMOSPHERIC SCIENCES, 37, 597-607.  doi: 10.1007/s00376-020-9233-4
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    • Manuscript History

    Manuscript received: 10 April 1999
    Manuscript revised: 10 April 1999
    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

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    Modeling the Sudden Decrease in CH4 Growth Rate in 1992

    • 1. State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029,State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences. Beijing 100029
    • Manuscript received: 1999-04-10
    • Manuscript revised: 1999-04-10

    Abstract: A two-dimensional global chemistry model is developed to study the distribution and long-term trends of methane. The model contains 34 species and 104 chemical and photochemical reactions. Using the model, the long-term trends of CH4, CO and OH in at-mosphere are simulated, comparison between the model and observations shows that the simulation is successful. Experiments are done to investigate the causes of dramatic decrease in the growth rate of CH4, in 1992 such as OH increase due to stratospheric ozone depletion, decrease of tempera?ture in the troposphere due to Mount Pinatubo eruption and descendent of CH4 sources fluxes. A new explanation is proposed and verified by this model that the decrease of CO emission plays an important role for the abnormal growth rate of CH4 in 1992. We find that the de?creases of CH4 and CO emissions are the main reasons for the sudden decrease of growth rate of CH4 in 1992, which account for 73% and 27% respectively.

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