Impact of Stratospheric Aerosol Injection Geoengineering on the Summer Climate Over East Asia

Lang, Xianmei; Jiang, Dabang

doi:10.1029/2021jd035049

Cited by 5 publications

(3 citation statements)

References 65 publications

(77 reference statements)

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“…The dynamic term that is primarily associated with altered atmospheric circulations is modified by horizontal and vertical velocity anomalies. The moisture budget analysis has been widely used to investigate precipitation variations and relevant physical processes in preceding simulated studies (e.g., Chen et al, 2020; D'Agostino et al, 2019; Liu et al, 2021; Tian et al, 2022; Wu et al, 2017).…”

Section: Methodsmentioning

confidence: 99%

Northwestward advance of the northern boundary of the East Asian summer monsoon over the 21st century in CMIP6 projections

Lang

Jiang

2023

Intl Journal of Climatology

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The East Asian summer monsoon (EASM) projection has attracted much attention, whereas there are few investigations on the future changes of the EASM northern boundary. The boundary migration would influence the distribution of precipitation and the related vegetation, and its projection is important for policy development of climate change adaptation. In this study, based on the median of 22 selected Coupled Model Intercomparison Project Phase 6 (CMIP6) models, the linear trends of meridional movement of the EASM northern boundary are found to be 0.45−1.39° of latitude during 2015–2099 based on the three precipitation‐based metrics under three shared socioeconomic pathway scenarios. Spatially, the multimetric climatological EASM northern boundary displays a 70–170 km northwestward advance during 2080–2099 compared to 1981–2010. Such an advance also holds true for most individual models, but the migration magnitudes vary with metrics, scenarios and models. The strengthened EASM in association with the intensified land–sea thermal contrast and the enhanced atmospheric water vapour content in response to global warming account for the northwestward advance of the EASM northern boundary, which is related to the increased possibility of the negative phase of the Pacific decadal oscillation in the future. Additionally, the thermodynamic component due to the increased moisture content contributes more than the dynamic term arising from the reinforced EASM circulations to the intensified precipitation and northwestward migration of the EASM northern boundary. The future advance of the EASM northern boundary favours a “northern flood and southern drought” precipitation pattern over eastern China, which would partly mitigate drought conditions in northern arid regions.

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Section: Methodsmentioning

confidence: 99%

Northwestward advance of the northern boundary of the East Asian summer monsoon over the 21st century in CMIP6 projections

Lang

Jiang

2023

Intl Journal of Climatology

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“…SAI modeled using Stratospheric Aerosol Geoengineering Large Ensemble (GLENS) models at a level to compensate for changes in temperature was shown to overcompensate for precipitation, changing drought risk over major river basins in Africa (Abiodun et al, 2021). Other work has found SAI can change the drought pattern over East Asia (Liu et al, 2021). Work examining SRM with a uniform solar reduction has found that, with globally varying effectiveness, SAI may reduce the likelihood of drought by reducing the frequency of heatwaves and consecutive dry days (Dagon and Schrag, 2017).…”

Section: Monsoons and Tropical Stormsmentioning

confidence: 96%

Stratospheric aerosol injection may impact global systems and human health outcomes

Tracy

Moch

Eastham

et al. 2022

Elementa: Science of the Anthropocene

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Solar radiation management (SRM) is a climate engineering strategy to reduce temperature increases due to global climate change. The most well-researched SRM methodology is stratospheric aerosol injection (SAI), which involves increasing the concentration of aerosol particles in the stratosphere to reduce the amount of solar radiation reaching Earth’s surface. The most considered and heavily researched aerosol for SAI is sulfate. SAI has been extensively modeled using various climate scenarios and investigated using data from previous volcanic eruptions, which provide an analog of the climate effects of SAI. Prior research has determined that SAI will not only decrease global temperatures but is likely to have direct impacts on ecosystem and public health. This review seeks to investigate the various ways by which SAI may impact global public health outcomes related to hydrologic cycling, atmospheric chemical cycling, frequency of natural disasters, food system disruptions, and ecological health through the pathways of water, air, soil, and biota. SAI has the potential to decrease negative health outcomes associated with rising temperatures but may have a myriad of impacts on global environmental systems. Anthropogenically altering the global climate, through both the release of greenhouse gases or through climatic engineering, has unknown consequences, many of which will likely impact global health and quality of life. A more holistic approach is necessary to understand the relative benefits and harms in using SAI as compared to the implication of global climate change.

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“…Although increasing attention has recently been given to the SAI‐induced changes in the monsoon system (Da‐Allada et al., 2020; Liu et al., 2021; Pinto et al., 2020), the response of the EAWM to the SAI remains unknown. The analysis of solar dimming (solar constant reduction) experiments can provide insights on the potential climate response to SAI.…”

Section: Introductionmentioning

confidence: 99%

Impact of Stratospheric Aerosol Injection on the East Asian Winter Monsoon

Lang

Miao

Jiang

2023

Geophysical Research Letters

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As one of the most active climate systems during boreal winter, the East Asian winter monsoon (EAWM) directly influences the winter climate over East Asia. A typical EAWM system is characterized by the Siberian high (SH) over the northern East Asian continent, the Aleutian low (AL) over the North Pacific, the low-level northerlies along the coast of East Asia, the mid-level East Asian trough (EAT) and the high-level East Asian jet stream (EAJS) (Huang et al., 2012;Wu & Wang, 2002). China, Japan and Korean Peninsula can experience cold and dry or warm and wet winters depending on the EAWM circulation (Cui & Sun, 1999;Huang et al., 2003). Moreover, the anomalous EAWM leads to weather and climate disasters such as extremely low temperatures and severe snowstorms, thus causing serious economic losses over densely populated East Asian countries (Huang et al., 2007;Li et al., 2016). The EAWM is projected to weaken over mid-latitudes, and strengthen over high-latitudes in East Asia, due to changes in the East Asian land-sea thermal contrast, tropical Pacific sea surface temperature (SST) and Arctic sea ice under future global warming (

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Impact of Stratospheric Aerosol Injection Geoengineering on the Summer Climate Over East Asia

Cited by 5 publications

References 65 publications

Northwestward advance of the northern boundary of the East Asian summer monsoon over the 21st century in CMIP6 projections

Northwestward advance of the northern boundary of the East Asian summer monsoon over the 21st century in CMIP6 projections

Stratospheric aerosol injection may impact global systems and human health outcomes

Impact of Stratospheric Aerosol Injection on the East Asian Winter Monsoon

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