Assessing Responses and Impacts of Solar climate intervention on the Earth system with stratospheric aerosol injection (ARISE-SAI): protocol and initial results from the first simulations
<p>Solar climate intervention using stratospheric aerosol injection is a proposed method of reducing global mean temperatures to reduce the worst consequences of climate change. A detailed assessment of responses and impacts of such an intervention is needed with multiple global models to supp...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Copernicus Publications
2022-11-01
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| Series: | Geoscientific Model Development |
| Online Access: | https://gmd.copernicus.org/articles/15/8221/2022/gmd-15-8221-2022.pdf |
| Summary: | <p>Solar climate intervention using stratospheric aerosol injection
is a proposed method of reducing global mean temperatures to reduce the
worst consequences of climate change. A detailed assessment of responses and
impacts of such an intervention is needed with multiple global models to
support societal decisions regarding the use of these approaches to help
address climate change. We present a new modeling protocol aimed at
simulating a plausible deployment of stratospheric aerosol injection and
reproducibility of simulations using other Earth system models: Assessing
Responses and Impacts of Solar climate intervention on the Earth system with
stratospheric aerosol injection (ARISE-SAI). The protocol and simulations
are aimed at enabling community assessment of responses of the Earth system
to solar climate intervention. ARISE-SAI simulations are designed to be more
policy-relevant than existing large ensembles or multi-model simulation
sets. We describe in detail the first set of ARISE-SAI simulations,
ARISE-SAI-1.5, which utilize a moderate emissions scenario, introduce
stratospheric aerosol injection at <span class="inline-formula">∼21.5</span> km in the year 2035, and
keep global mean surface air temperature near 1.5 <span class="inline-formula"><sup>∘</sup></span>C above the
pre-industrial value utilizing a feedback or control algorithm. We present
the detailed setup, aerosol injection strategy, and preliminary
climate analysis from a 10-member ensemble of these simulations carried out
with the Community Earth System Model version 2 with the Whole Atmosphere
Community Climate Model version 6 as its atmospheric component.</p> |
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| ISSN: | 1991-959X 1991-9603 |