Publication Abstracts

Yang et al. 2020, in press

Yang, H., D.W. Waugh, C. Orbe, and G. Chen, 2020: Dependence of atmospheric transport into the Arctic on the meridional extent of the Hadley cell. Geophys. Res. Lett., in press, doi:10.1029/2020GL090133.

Recent studies have shown a large spread in the transport of atmospheric tracers into the Arctic among a suite of chemistry climate models, and have suggested that this is related to the multi-model spread in the meridional extent of the Hadley Cell (HC). Here we examine the HC-transport relationship using an idealized model, where we can vary the mean circulation and isolate its impact on transport to the Arctic. It is shown that the poleward transport depends on the relative position between the northern edge of the HC and the tracer source, with maximum poleward transport occurring when the HC edge lies near the middle of the source region. Such dependence highlights the critical role of near-surface transport by Eulerian mean circulation rather than eddy mixing in the free troposphere. These results suggest that variations in the HC extent and the tracer source region are both important for modeling Arctic composition.

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BibTeX Citation

@unpublished{ya03200x,
  author={Yang, H. and Waugh, D. W. and Orbe, C. and Chen, G.},
  title={Dependence of atmospheric transport into the Arctic on the meridional extent of the Hadley cell},
  year={2020},
  journal={Geophys. Res. Lett.},
  doi={10.1029/2020GL090133},
  note={Manuscript accepted for publication}
}

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RIS Citation

TY  - INPR
ID  - ya03200x
AU  - Yang, H.
AU  - Waugh, D. W.
AU  - Orbe, C.
AU  - Chen, G.
PY  - 2020
TI  - Dependence of atmospheric transport into the Arctic on the meridional extent of the Hadley cell
JA  - Geophys. Res. Lett.
DO  - 10.1029/2020GL090133
ER  -

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