Publication Abstracts

Menzel and Orbe 2024, submitted

Menzel, M., and C. Orbe, 2024: Winter patterns of the Hadley Circulation's response to increased CO2 are distinct between the upper and lower troposphere. J. Atmos. Sci., submitted.

It is well documented that in response to a quadrupling of CO2, the Hadley Circulation (HC) widens and weakens. In practice, however, the HC response to increased CO2 is more nuanced, consisting of vertically dependent and regional patterns of change that deviate from the zonal-mean response. Here, we present a more comprehensive view than previously shown of the HC's response to increased CO2 by a) assessing the extent to which the response reflects a vertical shift in the circulation, b) examining zonal variations in the three-dimensional streamfunction, and c) considering its dependence on a broad forcing range spanning 2-to-8×CO2. Consideration of this more nuanced response reveals that the upper and mid-to-lower troposphere feature distinct responses to increased CO2 forcing.

While the upper tropospheric response largely reflects a zonally uniform upward extension of the troposphere, the mid-to-lower tropospheric response features strong regional variations. In addition, the lower troposphere responds more non-linearly to CO2 forcing, compared to the upper troposphere. Our results suggest that assessments of the HC response to climate change should clearly distinguish between upper versus lower tropospheric circulations.

Export citation: [ BibTeX ] [ RIS ]

BibTeX Citation

@unpublished{me07300l,
  author={Menzel, M. and Orbe, C.},
  title={Winter patterns of the Hadley Circulation's response to increased CO2 are distinct between the upper and lower troposphere},
  year={2024},
  journal={Journal of the Atmospheric Sciences},
  note={Manuscript submitted for publication}
}

[ Close ]

RIS Citation

TY  - UNPB
ID  - me07300l
AU  - Menzel, M.
AU  - Orbe, C.
PY  - 2024
TI  - Winter patterns of the Hadley Circulation's response to increased CO2 are distinct between the upper and lower troposphere
JA  - J. Atmos. Sci.
JO  - Journal of the Atmospheric Sciences
ER  -

[ Close ]

• Return to Publications Homepage