Articles | Volume 19, issue 8
https://doi.org/10.5194/acp-19-5511-2019
https://doi.org/10.5194/acp-19-5511-2019
Research article
 | 
26 Apr 2019
Research article |  | 26 Apr 2019

Large-scale transport into the Arctic: the roles of the midlatitude jet and the Hadley Cell

Huang Yang, Darryn W. Waugh, Clara Orbe, Guang Zeng, Olaf Morgenstern, Douglas E. Kinnison, Jean-Francois Lamarque, Simone Tilmes, David A. Plummer, Patrick Jöckel, Susan E. Strahan, Kane A. Stone, and Robyn Schofield

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Cited articles

Bacmeister, J. T., Suarez, M. J., and Robertson, F. R.: Rain Reevaporation, Boundary Layer–Convection Interactions, and Pacific Rainfall Patterns in an AGCM, J. Atmos. Sci., 63, 3383–3403, https://doi.org/10.1175/JAS3791.1, 2006. a, b, c
Barnes, E. A. and Polvani, L.: Response of the midlatitude jets, and of their variability, to increased greenhouse gases in the CMIP5 models, J. Climate, 26, 7117–7135, https://doi.org/10.1175/JCLI-D-12-00536.1, 2013. a, b
Barnes, E. A. and Simpson, I. R.: Seasonal sensitivity of the Northern Hemisphere jet streams to Arctic temperatures on subseasonal time scales, J. Climate, 30, 10117–10137, https://doi.org/10.1175/JCLI-D-17-0299.1, 2017. a, b
Bottenheim, J. W., Dastoor, A., Gong, S. L., Higuchi, K., and Li, Y. F.: Long Range Transport of Air Pollution to the Arctic, in: Handbook of Environmental Chemistry, vol. 4G, 13–39, Springer, Berlin, Heidelberg, https://doi.org/10.1007/b94522, 2004. a
Bowman, K. P. and Carrie, G. D.: The Mean-Meridional Transport Circulation of the Troposphere in an Idealized GCM, J. Atmos. Sci., 59, 1502–1514, 2002. a
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We evaluate the performance of a suite of models in simulating the large-scale transport from the northern midlatitudes to the Arctic using a CO-like idealized tracer. We find a large multi-model spread of the Arctic concentration of this CO-like tracer that is well correlated with the differences in the location of the midlatitude jet as well as the northern Hadley Cell edge. Our results suggest the Hadley Cell is key and zonal-mean transport by surface meridional flow needs better constraint.
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