Sensitivities of zonal mean atmospheric circulation to SST warming in an aqua-planet model
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chen_et_al GRL 2010.pdf
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Author(s)
Chen, Gang R.
Plumb, R. Alan
Lu, Jian, Ph. D. Massachusetts Institute of Technology
Date Issued
June 2010
Journal
Geophysical Research Letters
Publisher
American Geophysical Union
Citation
Chen, G., R. A. Plumb, and J. Lu (2010), "Sensitivities of zonal mean atmospheric circulation to SST warming in an aqua-planet model." Geophysical Research Letters, 37, L12701, 4 pp., 2010 ©2011. American Geophysical Union.
Version
Final published version
Abstract
Sensitivities of tropospheric winds and stratospheric Brewer-Dobson Circulation (BDC) to SST warming are explored in an aqua-planet atmospheric general circulation model. The tropospheric zonal wind change is quite sensitive to the location and sign of the gradient of SST perturbations with respect to the climatological jet. For the experiments with low latitude warming, the Hadley cell is intensified in the deep tropics, yet the Hadley cell boundary contracts for narrow meridional extents of warming and expands for broad extents of warming, associated with changes in extratropical eddy-driven winds. Despite the complex changes of tropospheric wave forcing, the strength of the BDC is increased for all the experiments with low latitude warming. For the experiments with high latitude warming, the strength of the BDC decreases only if the warming extending to the subtropics.
MIT Department
Massachusetts Institute of Technology. Department of Earth, Atmospheric, and Planetary Sciences
Massachusetts Institute of Technology. Program in Atmospheres, Oceans, and Climate
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1029/2010GL043473
