Response of a coupled chemistry‐climate model to changes in aerosol emissions: Global impact on the hydrological cycle and the tropospheric burdens of OH, ozone, and NO<sub>x</sub>

DOI Web Site Web Site 被引用文献1件
  • J.‐F. Lamarque
    National Center for Atmospheric Research Boulder Colorado USA
  • J. T. Kiehl
    National Center for Atmospheric Research Boulder Colorado USA
  • P. G. Hess
    National Center for Atmospheric Research Boulder Colorado USA
  • W. D. Collins
    National Center for Atmospheric Research Boulder Colorado USA
  • L. K. Emmons
    National Center for Atmospheric Research Boulder Colorado USA
  • P. Ginoux
    NOAA/Geophysical Fluid Dynamics Laboratory Princeton New Jersey USA
  • C. Luo
    Institute for Computational Earth System Sciences University of California Santa Barbara Santa Barbara California USA
  • X. X. Tie
    National Center for Atmospheric Research Boulder Colorado USA

書誌事項

公開日
2005-08
権利情報
  • http://onlinelibrary.wiley.com/termsAndConditions#vor
DOI
  • 10.1029/2005gl023419
公開者
American Geophysical Union (AGU)

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説明

<jats:p>In this study, we analyze the response of the coupled chemistry‐climate system to changes in aerosol emissions in fully coupled atmospheric chemistry‐climate‐slab ocean model simulations; only the direct radiative effect of aerosols and their uptake of chemical species are considered in this study. We show that, at the global scale, a decrease in emissions of the considered aerosols (or their precursors) produces a warmer and moister climate. In addition, the tropospheric burdens of OH and ozone increase when aerosol emissions are decreased. The ozone response is a combination of the impact of reduced heterogeneous uptake of N<jats:sub>2</jats:sub>O<jats:sub>5</jats:sub> and increased ozone loss in a moister atmosphere. Under reduced aerosol emissions, the tropospheric burden of NO<jats:sub>x</jats:sub> (NO + NO<jats:sub>2</jats:sub>) is strongly reduced by an increase in nitric acid formation but also increased by the reduced N<jats:sub>2</jats:sub>O<jats:sub>5</jats:sub> uptake. Finally, we discuss the significant difference found between the combined impact of all aerosols emissions and the sum of their individual contributions.</jats:p>

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