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Black carbon radiative forcing over the Tibetan Plateau

He, Cenlin ; Li, Qinbin ; Liou, Kuo‐Nan ; Takano, Yoshi ; Gu, Yu ; Qi, Ling ; Mao, Yuhao ; Leung, L. Ruby

Geophysical Research Letters, 28 November 2014, Vol.41(22), pp.7806-7813 [Tạp chí có phản biện]

ISSN: 0094-8276 ; E-ISSN: 1944-8007 ; DOI: 10.1002/2014GL062191

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  • Nhan đề:
    Black carbon radiative forcing over the Tibetan Plateau
  • Tác giả: He, Cenlin ; Li, Qinbin ; Liou, Kuo‐Nan ; Takano, Yoshi ; Gu, Yu ; Qi, Ling ; Mao, Yuhao ; Leung, L. Ruby
  • Chủ đề: Black Carbon ; Snow Albedo Forcing ; Direct Radiative Forcing ; Tibetan Plateau
  • Là 1 phần của: Geophysical Research Letters, 28 November 2014, Vol.41(22), pp.7806-7813
  • Mô tả: We estimate the snow albedo forcing and direct radiative forcing (DRF) of black carbon (BC) in the Tibetan Plateau using a global chemical transport model in conjunction with a stochastic snow model and a radiative transfer model. The annual mean BC snow albedo forcing is 2.9 W m averaged over snow‐covered plateau regions, which is a factor of 3 larger than the value over global land snowpack. BC‐snow internal mixing increases the albedo forcing by 40–60% compared with external mixing, and coated BC increases the forcing by 30–50% compared with uncoated BC aggregates, whereas Koch snowflakes reduce the forcing by 20–40% relative to spherical snow grains. The annual BC DRF at the top of the atmosphere is 2.3 W m with uncertainties of −70–85% in the plateau after scaling the modeled BC absorption optical depth to Aerosol Robotic Network observations. The BC forcings are attributed to emissions from different regions. BC snow albedo forcing in Tibetan Plateau is assessed by a stochastic snow modelEffects of snow shape and BC‐snow mixing as well as BC coating are examinedBC direct radiative forcing in the Tibetan Plateau is estimated
  • Số nhận dạng: ISSN: 0094-8276 ; E-ISSN: 1944-8007 ; DOI: 10.1002/2014GL062191

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