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Volume 28 Issue 1

Jan.  2011

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Article >  ADVANCES IN ATMOSPHERIC SCIENCES  > 2011 >  28(1): 129-138

Simulation of the Effect of an Increase in Methane on Air Temperature

  • 1.

    School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026,School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026,School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026,School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026,Anhui Institute of Meteorological Sciences, Hefei 230031


doi: 10.1007/s00376-010-9197-x

  • The infrared radiative effect of methane was analyzed using the 2D, interactive chemical dynamical radiative SOCRATES model of the National Center for Atmospheric Research. Then, a sensitivity experiment, with the methane volume mixing ratio increased by 10%, was carried out to study the influence of an increase of methane on air temperature. The results showed that methane has a heating effect through the infrared radiative process in the troposphere and a cooling effect in the stratosphere. However, the cooling effect of the methane is much smaller than that of water vapor in the stratosphere and is negligible in the mesosphere. The simulation results also showed that when methane concentration is increased by 10%, the air temperature lowers in the stratosphere and mesosphere and increases in the troposphere. The cooling can reach 0.2 K at the stratopause and can vary from 0.2--0.4 K in the mesosphere, and the temperature rise varies by around 0.001--0.002 K in the troposphere. The cooling results from the increase of the infrared radiative cooling rate caused by increased water vapor and O3 concentration, which are stimulated by the increase in methane in most of the stratosphere. The infrared radiation cooling of methane itself is minor. The depletion of O3 stimulated by the methane increase results indirectly in a decrease in the rate of solar radiation heating, producing cooling in the stratopause and mesosphere. The tropospheric warming is mainly caused by the increase of methane, which produces infrared radiative heating. The increase in H2O and O3 caused by the methane increase also contributes to a rise in temperature in the troposphere.
  • [1] BI Yun, CHEN Yuejuan, ZHOU Renjun, YI Mingjian, DENG Shumei, 2011: Simulation of the Effect of Water-vapor Increase on Temperature in the Stratosphere, ADVANCES IN ATMOSPHERIC SCIENCES, 28, 832-842.  doi: 10.1007/s00376-010-0047-7
    [2] 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
    [3] Jianfeng WANG, Ricardo M. FONSECA, Kendall RUTLEDGE, Javier MARTÍN-TORRES, Jun YU, 2020: A Hybrid Statistical-Dynamical Downscaling of Air Temperature over Scandinavia Using the WRF Model, ADVANCES IN ATMOSPHERIC SCIENCES, 37, 57-74.  doi: 10.1007/s00376-019-9091-0
    [4] 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
    [5] HU Dingzhu, TIAN Wenshou, XIE Fei, SHU Jianchuan, and Sandip DHOMSE, , 2014: Effects of Meridional Sea Surface Temperature Changes on Stratospheric Temperature and Circulation, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 888-900.  doi: 10.1007/s00376-013-3152-6
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    [8] YANG Jing, BAO Qing, JI Duoying, GONG Daoyi, MAO Rui, ZHANG Ziyin, Seong-Joong KIM, 2014: Simulation and Causes of Eastern Antarctica Surface Cooling Related to Ozone Depletion during Austral Summer in FGOALS-s2, ADVANCES IN ATMOSPHERIC SCIENCES, 31, 1147-1156.  doi: 10.1007/s00376-014-3144-1
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    [10] Yifan DING, Xiao CHENG, Xichen LI, Mohammed SHOKR, Jiawei YUAN, Qinghua YANG, Fengming HUI, 2020: Specific Relationship between the Surface Air Temperature and the Area of the Terra Nova Bay Polynya, Antarctica, ADVANCES IN ATMOSPHERIC SCIENCES, 37, 532-544.  doi: 10.1007/s00376-020-9146-2
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    [12] 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
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    • Manuscript History

    Manuscript received: 10 January 2011
    Manuscript revised: 10 January 2011
    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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    Simulation of the Effect of an Increase in Methane on Air Temperature

    • 1. School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026,School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026,School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026,School of Earth and Space Sciences, University of Science and Technology of China, Hefei 230026,Anhui Institute of Meteorological Sciences, Hefei 230031
    • Manuscript received: 2011-01-10
    • Manuscript revised: 2011-01-10

    Abstract: The infrared radiative effect of methane was analyzed using the 2D, interactive chemical dynamical radiative SOCRATES model of the National Center for Atmospheric Research. Then, a sensitivity experiment, with the methane volume mixing ratio increased by 10%, was carried out to study the influence of an increase of methane on air temperature. The results showed that methane has a heating effect through the infrared radiative process in the troposphere and a cooling effect in the stratosphere. However, the cooling effect of the methane is much smaller than that of water vapor in the stratosphere and is negligible in the mesosphere. The simulation results also showed that when methane concentration is increased by 10%, the air temperature lowers in the stratosphere and mesosphere and increases in the troposphere. The cooling can reach 0.2 K at the stratopause and can vary from 0.2--0.4 K in the mesosphere, and the temperature rise varies by around 0.001--0.002 K in the troposphere. The cooling results from the increase of the infrared radiative cooling rate caused by increased water vapor and O3 concentration, which are stimulated by the increase in methane in most of the stratosphere. The infrared radiation cooling of methane itself is minor. The depletion of O3 stimulated by the methane increase results indirectly in a decrease in the rate of solar radiation heating, producing cooling in the stratopause and mesosphere. The tropospheric warming is mainly caused by the increase of methane, which produces infrared radiative heating. The increase in H2O and O3 caused by the methane increase also contributes to a rise in temperature in the troposphere.

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