DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Tropical Indian Ocean drives Hadley circulation change in a warming climate

Journal Article · · National Science Review

ABSTRACT The weakening and poleward expansion of the Hadley circulation (HC) are considered robust responses of atmospheric meridional circulation to anthropogenic warming. Climate impacts arising from these changes enhance drought conditions and reduce food production in the affected regions. Therefore, understanding the mechanisms of HC changes is critical to anticipating the resultant climate risks. First, we demonstrate that robust future HC changes in boreal winter, and the uncertainty in their future projections, are both largely related to sea surface temperature (SST) warming. Next, we investigate the impact of anthropogenic regional ocean warming on the future HC. Accordingly, we conduct a large ensemble of individual ocean basin perturbation experiments at 1.5°C, 2°C, and 3°C warming thresholds (as in the Paris Agreement). These experiments highlight (i) the leading role of tropical Indian Ocean warming in HC changes and (ii) inter-model differences in tropical Pacific warming as a source of uncertainty in HC projections.

Sponsoring Organization:
USDOE
OSTI ID:
2496765
Journal Information:
National Science Review, Journal Name: National Science Review Journal Issue: 1 Vol. 12; ISSN 2095-5138
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
China
Language:
English

References (51)

The robustness of the atmospheric circulation and precipitation response to future anthropogenic surface warming: CIRCULATION RESPONSE TO SST WARMING journal April 2014
The response of midlatitude jets to increased CO 2 : Distinguishing the roles of sea surface temperature and direct radiative forcing : Response of jets to increased CO2 journal October 2014
Weakening and strengthening structures in the Hadley Circulation change under global warming and implications for cloud response and climate sensitivity: Circulation, Clouds, Climate Sensitivity journal May 2014
Breaking down the tropospheric circulation response by forcing journal December 2011
Anthropogenic forcing on the Hadley circulation in CMIP5 simulations journal July 2015
Regional meridional cells governing the interannual variability of the Hadley circulation in boreal winter journal May 2018
Sensitivity of the Atlantic meridional overturning circulation and climate to tropical Indian Ocean warming journal May 2021
Modeling the mid-piacenzian warm climate using the water isotope-enabled Community Earth System Model (iCESM1.2-ITPCAS) journal June 2024
Revisiting the physical processes controlling the tropical atmospheric circulation changes during the Mid-Piacenzian Warm Period journal February 2024
Widening and weakening of the Hadley circulation under global warming journal May 2018
Comparison of trends in the Hadley circulation between CMIP6 and CMIP5 journal October 2020
Summary for Policymakers book July 2023
Recent behavior of the Hadley cell and tropical thermodynamics in climate models and reanalyses: HADLEY CELL AND TROPICAL THERMODYNAMICS journal January 2006
Expansion of the Hadley cell under global warming journal January 2007
Cause of the widening of the tropical belt since 1958: WIDENING OF TROPICS journal February 2009
Robust future precipitation declines in CMIP5 largely reflect the poleward expansion of model subtropical dry zones: POLEWARD EXPANSION OF CMIP5 DRY ZONES journal September 2012
Hemispheric Asymmetry of Tropical Expansion Under CO 2 Forcing journal August 2019
Impacts of Subtropical Highs on Summertime Precipitation in North America journal November 2019
Poleward Shift of Northern Subtropics in Winter: Time of Emergence of Zonal Versus Regional Signals journal September 2020
Elucidating the Mechanisms Responsible for Hadley Cell Weakening Under 4 × CO2 Forcing journal February 2021
Migrations and dynamics of the intertropical convergence zone journal September 2014
Robust direct effect of carbon dioxide on tropical circulation and regional precipitation journal April 2013
Indian Ocean warming can strengthen the Atlantic meridional overturning circulation journal September 2019
Opposite tropical circulation trends in climate models and in reanalyses journal June 2019
Greenhouse warming and the 21st century hydroclimate of southwestern North America journal December 2010
Robust Hadley Circulation changes and increasing global dryness due to CO 2 warming from CMIP5 model projections journal February 2015
Direct weakening of tropical circulations from masked CO 2 radiative forcing journal October 2015
Wetter subtropics in a warmer world: Contrasting past and future hydrological cycles journal November 2017
Ecological and hydroclimate responses to strengthening of the Hadley circulation in South America during the Late Miocene cooling journal April 2019
Coupled dynamics of the North Equatorial Countercurrent and Intertropical Convergence Zone with relevance to the double-ITCZ problem journal July 2022
The Hadley circulation in a changing climate journal March 2024
Oceanic Forcing of Sahel Rainfall on Interannual to Interdecadal Time Scales journal November 2003
Model Projections of an Imminent Transition to a More Arid Climate in Southwestern North America journal May 2007
How fast are the oceans warming? journal January 2019
Responses of the Tropical Atmospheric Circulation to Climate Change and Connection to the Hydrological Cycle journal May 2018
Response of the Zonal Mean Atmospheric Circulation to El Niño versus Global Warming journal November 2008
The Hadley and Walker Circulation Changes in Global Warming Conditions Described by Idealized Atmospheric Simulations journal July 2009
The Community Earth System Model: A Framework for Collaborative Research journal September 2013
Mechanisms for Tropical Tropospheric Circulation Change in Response to Global Warming* journal April 2012
Regional Patterns of Sea Surface Temperature Change: A Source of Uncertainty in Future Projections of Precipitation and Atmospheric Circulation journal April 2013
How Fast Are the Tropics Expanding? journal March 2014
Energetic Constraints on the Position of the Intertropical Convergence Zone journal July 2014
Role of Changes in Mean Temperatures versus Temperature Gradients in the Recent Widening of the Hadley Circulation journal October 2014
Terrestrial Aridity and Its Response to Greenhouse Warming across CMIP5 Climate Models journal July 2015
Does the Lack of Coupling in SST-Forced Atmosphere-Only Models Limit Their Usefulness for Climate Change Studies? journal June 2016
Anthropogenic Weakening of the Tropical Circulation: The Relative Roles of Direct CO 2 Forcing and Sea Surface Temperature Change journal November 2015
Uncertainty in Tropical Rainfall Projections: Atmospheric Circulation Effect and the Ocean Coupling journal April 2016
Exploiting the Abrupt 4 × CO 2 Scenario to Elucidate Tropical Expansion Mechanisms journal February 2019
Responses of the Hadley Circulation to Regional Sea Surface Temperature Changes journal December 2019
Hadley cell expansion in CMIP6 models journal January 2020
Observed poleward expansion of the Hadley circulation since 1979 journal January 2007

Related Subjects