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The Stirring Tropics: Theory of Moisture Mode−Hadley Cell Interactions
Journal of Climate, 2023Interactions between large-scale waves and the Hadley Cell are examined using a linear two-layer model on an f-plane. A linear meridional moisture gradient determines the strength of the idealized Hadley Cell. The trade winds are in thermal wind balance with a weak temperature gradient (WTG).
Ángel F. Adames Corraliza +1 more
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Symmetric Baroclinic Instability of a Hadley Cell
Journal of the Atmospheric Sciences, 1982A symmetric baroclinic instability is examined in terms of a Boussinesq fluid contained between two horizontal plates to determine the effects of the Ekman and thermal layers. Governing equations are written for a rotating reference frame, taking into account the Rossby, Ekman, and Prandtl numbers.
Basil N. Antar, William W. Fowlis
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Baroclinic Instability of a Rotating Hadley Cell
Journal of the Atmospheric Sciences, 1981The stability of a thin fluid layer between two rotating plates which are subjected to a horizontal temperature gradient is investigated. The solution for the stationary basic state is obtained in a closed form. It is pointed out that this solution identifies Ekman and thermal layers adjacent to the plates and interior temperature and velocity fields ...
Basil N. Antar, William W. Fowlis
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Super recovery of the Hadley Cell edge to the CO2 removal
2022<p>The poleward shift of the Hadley cell (HC) edge by global warming is widely documented. However, its reversibility to CO<sub>2</sub> removal remains unknown. By conducting a climate model experiment where CO<sub>2</sub> concentration is systematically increased and then decreased ...
Yeong-Ju Choi +7 more
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Mechanisms of interannual variation of Hadley cell extent
2023The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
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Hadley Cell Expansion and Shifting Subtropical Highs
2020The Hadley cells—large-scale overturning circulations with rising air near the equator and sinking air in the subtropics—dominate the Earth’s climate at low latitudes. Observations have shown that the Hadley cells are expanding poleward in both the Northern and Southern Hemispheres, and model results suggest that such expansion is likely to continue ...
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Change in the Tropical Hadley Cell Since 1950
2004The change in the tropical Hadley cell since 1950 is examined within the context of the long-term warming in global surface temperatures. The study involves analyses of observations, including various metrics of the Hadley cell, and ensemble 50-year simulations by an atmospheric general circulation model (AGCM) forced with the observed evolution of ...
Xiao-Wei Quan +2 more
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Annual and Biennial Modulations in the Tropical Hadley Cell Circulation
Nature, 1969THE temperature in the vicinity of the tropical tropopause is lower in January than in July (ref. 1 and our unpublished results), the difference ranging to about 10° C in the 100–50 mbar layer (about 16–21 km). The low temperature depends on the calendar year rather than on mean zenith angle of the Sun, because it occurs in either January or February ...
REGINALD E. NEWELL +2 more
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Influence of Baroclinic Eddies on the Hadley Cell Edge
Journal of ClimateAbstract The Hadley cell (HC), a thermally direct circulation in the tropics, is known as the primary cause of tropical rainforest and subtropical desert formation. While its formation and maintenance have been extensively examined, the theoretical understanding of the dynamics governing its extent remains incomplete.
Seungpyo Lee +4 more
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The summer hemisphere Hadley cell.
1972Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Meteorology, 1972. ; Bibliography: leaves 42-43. ; M.S.
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