The seasonal sensitivity of the anomalous cross-equatorial cell d. Factors to consider when applying the theories to more realistic models and forcings, and to observational data Data availability statement Mass Correction in Atmospheric Energy Transport Decomposition of Surface Flux Decomposition of Latent Heat Flux. Export References.
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Previous Article Next Article. Editorial Type: Article. Article History. Restricted access. Corresponding author : Yen-Ting Hwang, ythwang ntu. Share Link Copy this link, or click below to email it to a friend. Your current browser may not support copying via this button. Climate change attribution tells us how much of the credit or risk for a trend or event should go to human-caused climate change.
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An updating database of studies that find the fingerprint of human-caused climate change on observed trends and events. About us. Hadley Cell Expansion As global temperatures rise, the temperature difference between the poles and the equator is likely to decrease, expanding the cell of air circulation adjacent to the equator known as the Hadley cell. Read More. Jul 12, Nov 10, The Guardian. The sea is rising faster now than any time in the last 3, years, experts say, slowly swallowing the Texas Gulf Coast.
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Journal of the Atmospheric Sciences. Sections Abstract. Export References. Kidson , D. Vincent , and G. View in gallery Histogram showing the difference in strength between the northern and southern tropical circulation cells in 19 yr of 5-day mean data.
View raw image Histogram showing the difference in strength between the northern and southern tropical circulation cells in 19 yr of 5-day mean data. Chart I. Tracks of Centers of Anticyclones, December, Author: P.
Previous Article. On the Seasonality of the Hadley Cell. Ioana M. Dima 1 and John M. Wallace 1. CO;2 Page s : — Article History.
Download PDF. Full access. Download Figure Download figure as PowerPoint slide. View Table. Share Link Copy this link, or click below to email it to a friend. Instead, air from the equator would be able to travel all the way to the poles in extended Hadley Cells.
Based off of Venus' atmosphere's behavior, Farrell argues that another way to extend the Hadley Cells would be to increase the height of the tropopause. This change would increase the poleward moving air's Rossby number. The Rossby number describes the importance of the Coriolis force in atmospheric dynamics. A higher Rossby number means that the Coriolis force has a smaller impact on a particle, so if the height of the tropopause increased enough, the Rossby number would become high enough to make the Coriolis force negligible.
As a result, particles would not diverge from their path as they moved poleward, and the Hadley Cells would reach the poles. There temperature increases would almost double the static stability at the tropopause.
For the height to increase, the stratosphere would also have to become less stable. If CO 2 concentrations increased and if stratospheric ozone concentrations decreased, the stratosphere would cool substantially, and this change would destabilize the stratosphere.
As a result of the alterations to tropospheric and stratospheric stability, the tropopause height would increase. Farrell estimates the height would have doubled under Cretaceous conditions, and as a result, the Rossby number would have doubled. This change would have allowed the Hadley Cells to extend to the poles and would have made equable climates more likely. Hadley cells could extend all the way to the poles. While each of these alterations to the atmosphere would extend the Hadley Cells, Farrell found that a combination of the two effects was necessary to make his model's results agree with proxy data from equable climates.
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