skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Comparing different generations of idealized solar geoengineering simulations in the Geoengineering Model Intercomparison Project (GeoMIP)

Journal Article · · Atmospheric Chemistry and Physics (Online)

Abstract. Solar geoengineering has been receiving increased attention in recent years as a potential temporary solution to offset global warming. One method of approximating global-scale solar geoengineering in climate models is via solar reduction experiments. Two generations of models in the Geoengineering Model Intercomparison Project (GeoMIP) have now simulated offsetting a quadrupling of the CO2 concentration with solar reduction. This simulation is idealized and designed to elicit large responses in the models. Here, we show that energetics, temperature, and hydrological cycle changes in this experiment are statistically indistinguishable between the two ensembles. Of the variables analyzed here, the only major differences involve highly parameterized and uncertain processes, such as cloud forcing or terrestrial net primary productivity. We conclude that despite numerous structural differences and uncertainties in models over the past two generations of models, including an increase in climate sensitivity in the latest generation of models, the models are consistent in their aggregate climate response to global solar dimming.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE; National Science Foundation (NSF); National Aeronautics and Space Administration (NASA); German Research Foundation (DFG)
Grant/Contract Number:
AC05-76RL01830; CBET-1931641; AGS-1617844; AGS-2017113; ANR-11-IDEX-0004-17-EURE-0006; 2016-A0030107732; 2017-R0040110492; 2018-R0040110492; 820829
OSTI ID:
1771810
Alternate ID(s):
OSTI ID: 1787489
Report Number(s):
PNNL-SA-160572
Journal Information:
Atmospheric Chemistry and Physics (Online), Journal Name: Atmospheric Chemistry and Physics (Online) Vol. 21 Journal Issue: 6; ISSN 1680-7324
Publisher:
Copernicus GmbHCopyright Statement
Country of Publication:
Germany
Language:
English

References (73)

Response of Surface Ultraviolet and Visible Radiation to Stratospheric SO2 Injections journal November 2018
Development and evaluation of an Earth-System model – HadGEM2 journal January 2011
The Community Climate System Model Version 4 journal October 2011
Geoengineering as an optimization problem journal July 2010
Climate change projections using the IPSL-CM5 Earth System Model: from CMIP3 to CMIP5 journal February 2013
Overview of the Coupled Model Intercomparison Project Phase 6 (CMIP6) experimental design and organization journal January 2016
The CSIRO Mk3L climate system model version 1.0 – Part 2: Response to external forcings journal January 2012
Carbon–concentration and carbon–climate feedbacks in CMIP6 models and their comparison to CMIP5 models journal January 2020
Impact of the LMDZ atmospheric grid configuration on the climate and sensitivity of the IPSL-CM5A coupled model journal July 2012
GISS‐E2.1: Configurations and Climatology journal August 2020
Changes in clouds and thermodynamics under solar geoengineering and implications for required solar reduction journal January 2018
Modeling of solar radiation management: a comparison of simulations using reduced solar constant and stratospheric sulphate aerosols journal July 2014
Solar radiation management impacts on agriculture in China: A case study in the Geoengineering Model Intercomparison Project (GeoMIP) journal July 2014
A Surface Energy Perspective on Climate Change journal May 2009
The simulation of SST, sea ice extents and ocean heat transports in a version of the Hadley Centre coupled model without flux adjustments journal February 2000
An Overview of CMIP5 and the Experiment Design journal April 2012
Efficacy of climate forcings journal January 2005
Management of trade-offs in geoengineering through optimal choice of non-uniform radiative forcing journal October 2012
The hydrological impact of geoengineering in the Geoengineering Model Intercomparison Project (GeoMIP): THE HYDROLOGIC IMPACT OF GEOENGINEERING journal October 2013
A simple model to account for regional inequalities in the effectiveness of solar radiation management journal May 2011
Climate extremes in multi-model simulations of stratospheric aerosol and marine cloud brightening climate engineering journal January 2015
Halving warming with idealized solar geoengineering moderates key climate hazards journal March 2019
Aerosol–climate interactions in the Norwegian Earth System Model – NorESM1-M journal January 2013
Geoengineering Earth's radiation balance to mitigate CO 2 -induced climate change journal July 2000
Albedo Enhancement by Stratospheric Sulfur Injections: A Contribution to Resolve a Policy Dilemma? journal July 2006
Comparing Surface and Stratospheric Impacts of Geoengineering With Different SO 2 Injection Strategies journal July 2019
UKESM1: Description and Evaluation of the U.K. Earth System Model journal December 2019
An energetic perspective on hydrological cycle changes in the Geoengineering Model Intercomparison Project: GeoMIP ENERGETIC PERSPECTIVE journal December 2013
The Geoengineering Model Intercomparison Project Phase 6 (GeoMIP6): simulation design and preliminary results journal January 2015
Effects of Different Stratospheric SO 2 Injection Altitudes on Stratospheric Chemistry and Dynamics journal May 2018
Implementation of the CMIP6 Forcing Data in the IPSL‐CM6A‐LR Model journal April 2020
Atmospheric component of the MPI-M Earth System Model: ECHAM6: ECHAM6 journal April 2013
Developments in the MPI‐M Earth System Model version 1.2 (MPI‐ESM1.2) and Its Response to Increasing CO 2 journal April 2019
The Regional Hydroclimate Response to Stratospheric Sulfate Geoengineering and the Role of Stratospheric Heating journal December 2019
On the climate sensitivity and historical warming evolution in recent coupled model ensembles journal January 2020
A multi-model assessment of regional climate disparities caused by solar geoengineering journal July 2014
The Community Earth System Model: A Framework for Collaborative Research journal September 2013
Arctic sea ice and atmospheric circulation under the GeoMIP G1 scenario journal January 2014
First Simulations of Designing Stratospheric Sulfate Aerosol Geoengineering to Meet Multiple Simultaneous Climate Objectives journal December 2017
Climate model genealogy: Generation CMIP5 and how we got there: CLIMATE MODEL GENEALOGY journal March 2013
Stratospheric Dynamical Response and Ozone Feedbacks in the Presence of SO 2 Injections journal December 2017
Configuration and assessment of the GISS ModelE2 contributions to the CMIP5 archive: GISS MODEL-E2 CMIP5 SIMULATIONS journal March 2014
On the interpretation of inter-model spread in CMIP5 climate sensitivity estimates journal March 2013
Seasonal Injection Strategies for Stratospheric Aerosol Geoengineering journal July 2019
Regional climate response to solar-radiation management journal July 2010
Causes of Higher Climate Sensitivity in CMIP6 Models journal January 2020
Weakening of the Extratropical Storm Tracks in Solar Geoengineering Scenarios journal June 2020
EC-Earth V2.2: description and validation of a new seamless earth system prediction model journal December 2011
Evaluation of CNRM Earth System Model, CNRM‐ESM2‐1: Role of Earth System Processes in Present‐Day and Future Climate journal December 2019
Carbon emission limits required to satisfy future representative concentration pathways of greenhouse gases: ALLOWABLE FUTURE CARBON EMISSIONS journal March 2011
The Geoengineering Model Intercomparison Project (GeoMIP) journal January 2011
North Atlantic Oscillation response in GeoMIP experiments G6solar and G6sulfur: why detailed modelling is needed for understanding regional implications of solar radiation management journal January 2021
Climate model response from the Geoengineering Model Intercomparison Project (GeoMIP): GEOMIP MODEL RESPONSE journal August 2013
Tropical atmospheric circulation response to the G1 sunshade geoengineering radiative forcing experiment journal January 2018
Assessment of CMIP6 Cloud Fraction and Comparison with Satellite Observations journal February 2020
An overview of the Earth system science of solar geoengineering: Overview of the earth system science of solar geoengineering journal July 2016
The CSIRO Mk3L climate system model version 1.0 – Part 1: Description and evaluation journal January 2011
The Whole Atmosphere Community Climate Model Version 6 (WACCM6) journal December 2019
Geoengineering as a design problem journal January 2016
Volcanic eruptions and climate journal May 2000
Description and basic evaluation of Beijing Normal University Earth System Model (BNU-ESM) version 1 journal January 2014
The Canadian Earth System Model version 5 (CanESM5.0.3) journal January 2019
Sensitivity to deliberate sea salt seeding of marine clouds – observations and model simulations journal January 2012
MIROC-ESM 2010: model description and basic results of CMIP5-20c3m experiments journal January 2011
Solar irradiance reduction via climate engineering: Impact of different techniques on the energy balance and the hydrological cycle: CLIMATIC IMPACT OF DIFFERENT SRM METHODS journal November 2013
Stratospheric ozone response to sulfate geoengineering: Results from the Geoengineering Model Intercomparison Project (GeoMIP): GeoMIP ozone response journal March 2014
Context for interpreting equilibrium climate sensitivity and transient climate response from the CMIP6 Earth system models journal June 2020
Climate and carbon cycle changes from 1850 to 2100 in MPI-ESM simulations for the Coupled Model Intercomparison Project phase 5: Climate Changes in MPI-ESM journal July 2013
Studying geoengineering with natural and anthropogenic analogs journal May 2013
A multimodel examination of climate extremes in an idealized geoengineering experiment journal April 2014
Presentation and Evaluation of the IPSL‐CM6A‐LR Climate Model journal July 2020
The impact of abrupt suspension of solar radiation management (termination effect) in experiment G2 of the Geoengineering Model Intercomparison Project (GeoMIP): THE TERMINATION EFFECT IN GEOMIP G2 journal September 2013
The impact of geoengineering on vegetation in experiment G1 of the GeoMIP journal October 2015

Similar Records

Identifying the sources of uncertainty in climate model simulations of solar radiation modification with the G6sulfur and G6solar Geoengineering Model Intercomparison Project (GeoMIP) simulations
Journal Article · Tue Jul 06 00:00:00 EDT 2021 · Atmospheric Chemistry and Physics (Online) · OSTI ID:1771810

The Hydrological Impact of Geoengineering in the Geoengineering Model Intercomparison Project (GeoMIP)
Journal Article · Mon Oct 14 00:00:00 EDT 2013 · Journal of Geophysical Research. D. (Atmospheres), 118(19):11,036-11,058 · OSTI ID:1771810

Climate Model Response from the Geoengineering Model Intercomparison Project (GeoMIP)
Journal Article · Fri Aug 09 00:00:00 EDT 2013 · Journal of Geophysical Research. D. (Atmospheres), 118(15):8320-8332 · OSTI ID:1771810

Related Subjects