Global Cooling Hiatus Driven by an AMOC Overshoot in a Carbon Dioxide Removal Scenario

An, Soon‐Il; Shin, Jongsoo; Yeh, Sang‐Wook; Son, Seok‐Woo; Kug, Jong‐Seong; Min, Seung‐Ki; Kim, Hyo-Jeong

doi:10.1029/2021ef002165

Cited by 32 publications

(53 citation statements)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the RND period, the eastern Pacific ITCZ shifts slowly to the north, and a higher surface pressure forms over the North Atlantic; this is related to the weakened Atlantic Meridional Overturning Circulation (AMOC; An et al., 2021), and is a response to decreasing CO 2 radiative forcing (Figure 3a). The high pressure driven by the North Atlantic cooling during the RDN period intensifies mean southeasterlies (Figure S4a in Supporting Information S1).…”

Section: Resultsmentioning

confidence: 99%

“…In addition, a restoration period after the year 2280 was modeled, where the same CO 2 concentration as that in the PD simulation was maintained. Furthermore, the GMT in 2140, when the peak CO 2 concentration occurred, was approximately 5°C higher than in the PD simulation (Figure S1b in Supporting Information S1; An et al, 2021). Note that this study neglects anthropogenic aerosol emissions, which contribute to suppressed monsoon precipitation during the PD period (Hwang et al, 2013;Wang et al, 2016).…”

Section: Community Earth System Model (Cesm) Experimental Designmentioning

confidence: 87%

“…The enhanced North Atlantic anticyclone during RND period (Figure 3a) is possibly related to ocean surface cooling driven by the weakened AMOC. The hydrologic response over the North Atlantic Ocean to CO 2 forcing leads to a weakened and delayed response of AMOC through the RUP and RND periods, resulting in the strong hysteresis behavior (An et al., 2021). The resultant anticyclone circulation over the North Atlantic presumably has a positive effect on the NAM monsoon precipitation along with the rapid response of the Eurasian continent.…”

Section: Summary and Discussionmentioning

confidence: 99%

See 2 more Smart Citations

Contrasting Hysteresis Behaviors of Northern Hemisphere Land Monsoon Precipitation to CO₂ Pathways

Shin

et al. 2022

Earth's Future

Self Cite

View full text Add to dashboard Cite

Understanding future monsoon projections is crucial to preventing or mitigating the risk of economic losses from natural disasters, as approximately 60% of the world's population lives in monsoon countries (Wang et al., 2012). The warmer temperature associated with rising CO 2 levels can increase moisture flux convergence and strengthen global monsoons (Kitoh et al., 2013). A substantial amount of climate research has provided reasonable descriptions of how global and regional monsoon precipitation will change under increasing CO 2 scenarios (

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Community Earth System Model (Cesm) Experimental Designmentioning

confidence: 87%

Section: Summary and Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Contrasting Hysteresis Behaviors of Northern Hemisphere Land Monsoon Precipitation to CO₂ Pathways

Shin

et al. 2022

Earth's Future

Self Cite

View full text Add to dashboard Cite

show abstract

“…The CO 2 pulse and CDRMIP experiments could provide a clue on a climate reversibility, which is an ability for restoring toward its initial climate state [19][20][21] . The opposite case refers irreversibility.…”

mentioning

confidence: 99%

“…Such irreversible climate change usually accompanies a hysteresis behavior. For example, a strong hysteresis behavior of Atlantic Meridional Overturning Circulation (AMOC) could lead to an irreversible climate change 19,22,23 , and a strong oceanic thermal inertia over Southern Ocean could be a cause for irreversible climate change 21,24 . In this regard, the investigation of OHT gives a sense of where the irreversible climate change would occur by showing a place for the oceanic heat accumulation.…”

mentioning

confidence: 99%

General circulation and global heat transport in a quadrupling CO2 pulse experiment

Park

Shin

et al. 2022

Sci Rep

Self Cite

View full text Add to dashboard Cite

To investigate the response of the general circulation and global transport of heat through both atmosphere and ocean to two-types of carbon dioxide removal scenario, we performed an earth system model experiment in which we imposed a pulse-type quadrupling of CO2 forcing for 50 years and a gradual peak-and-decline of four-time CO2 forcing. We found that the results from two experiments are qualitatively similar to each other. During the forcing-on period, a dominant warming in the upper troposphere over the tropics and on the surface at high latitudes led to a slowdown in the Hadley circulation, but the poleward atmospheric energy transport was enhanced due to an increase in specific humidity. This counteracted the reduction in poleward oceanic energy transport owing to the suppression of the meridional overturning circulation in both Hemispheres. After returning the original CO2 level, the hemispheric thermal contrast was reversed, causing a southward shift of the intertropical convergence zone. To reduce the hemispheric thermal contrast, the northward energy transports in the atmosphere and ocean surface were enhanced while further weakening of the global-scale Atlantic meridional overturning circulation led to southward energy transport in the deep ocean.

show abstract

CAS-ESM2.0 Dataset for the Carbon Dioxide Removal Model Intercomparison Project (CDRMIP)

Jin,

Ji,

Dong

et al. 2024

Adv. Atmos. Sci.

View full text Add to dashboard Cite

Understanding the response of the Earth system to varying concentrations of carbon dioxide (CO2) is critical for projecting possible future climate change and for providing insight into mitigation and adaptation strategies in the near future. In this study, we generate a dataset by conducting an experiment involving carbon dioxide removal (CDR)—a potential way to suppress global warming—using the Chinese Academy of Sciences Earth System Model version 2.0 (CAS-ESM2.0). A preliminary evaluation is provided. The model is integrated from 200–340 years as a 1% yr−1 CO2 concentration increase experiment, and then to ~478 years as a carbon dioxide removal experiment until CO2 returns to its original value. Finally, another 80 years is integrated in which CO2 is kept constant. Changes in the 2-m temperature, precipitation, sea surface temperature, ocean temperature, Atlantic meridional overturning circulation (AMOC), and sea surface height are all analyzed. In the ramp-up period, the global mean 2-m temperature and precipitation both increase while the AMOC weakens. Values of all the above variables change in the opposite direction in the ramp-down period, with a delayed peak relative to the CO2 peak. After CO2 returns to its original value, the global mean 2-m temperature is still ~1 K higher than in the original state, and precipitation is ~0.07 mm d−1 higher. At the end of the simulation, there is a ~0.5°C increase in ocean temperature and a 1 Sv weakening of the AMOC. Our model simulation produces similar results to those of comparable experiments previously reported in the literature.

show abstract

Global Cooling Hiatus Driven by an AMOC Overshoot in a Carbon Dioxide Removal Scenario

Cited by 32 publications

References 40 publications

Contrasting Hysteresis Behaviors of Northern Hemisphere Land Monsoon Precipitation to CO₂ Pathways

Contrasting Hysteresis Behaviors of Northern Hemisphere Land Monsoon Precipitation to CO₂ Pathways

General circulation and global heat transport in a quadrupling CO2 pulse experiment

CAS-ESM2.0 Dataset for the Carbon Dioxide Removal Model Intercomparison Project (CDRMIP)

Contact Info

Product

Resources

About

Global Cooling Hiatus Driven by an AMOC Overshoot in a Carbon Dioxide Removal Scenario

Cited by 32 publications

References 40 publications

Contrasting Hysteresis Behaviors of Northern Hemisphere Land Monsoon Precipitation to CO2 Pathways

Contrasting Hysteresis Behaviors of Northern Hemisphere Land Monsoon Precipitation to CO2 Pathways

General circulation and global heat transport in a quadrupling CO2 pulse experiment

CAS-ESM2.0 Dataset for the Carbon Dioxide Removal Model Intercomparison Project (CDRMIP)

Contact Info

Product

Resources

About

Contrasting Hysteresis Behaviors of Northern Hemisphere Land Monsoon Precipitation to CO₂ Pathways

Contrasting Hysteresis Behaviors of Northern Hemisphere Land Monsoon Precipitation to CO₂ Pathways