Articles | Volume 19, issue 9
Atmos. Chem. Phys., 19, 6509–6534, 2019
https://doi.org/10.5194/acp-19-6509-2019

Special issue: The SPARC Reanalysis Intercomparison Project (S-RIP) (ACP/ESSD...

Atmos. Chem. Phys., 19, 6509–6534, 2019
https://doi.org/10.5194/acp-19-6509-2019

Research article 16 May 2019

Research article | 16 May 2019

Multitimescale variations in modeled stratospheric water vapor derived from three modern reanalysis products

Mengchu Tao et al.

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Short summary
This paper examines the annual and interannual variations as well as long-term trend of modeled stratospheric water vapor with a Lagrangian chemical transport model driven by ERA-I, MERRA-2 and JRA-55. We find reasonable consistency among the annual cycle, QBO and the variabilities induced by ENSO and volcanic aerosols. The main discrepancies are linked to the differences in reanalysis upwelling rates in the lower stratosphere. The trends are sensitive to the reanalyses that drives the model.
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