scholarly journals Will Fire Danger Be Reduced by Using Solar Radiation Management to Limit Global Warming to 1.5 °C Compared to 2.0 °C?

2018 ◽  
Vol 45 (8) ◽  
pp. 3644-3652 ◽  
Author(s):  
C. Burton ◽  
R. A. Betts ◽  
C. D. Jones ◽  
K. Williams
Keyword(s):  
Global Warming ◽  
Solar Radiation ◽  
Fire Danger ◽  
Solar Radiation Management ◽  
Radiation Management

scholarly journals Complementing CO<sub>2</sub> emission reduction by solar radiation management might strongly enhance future welfare

2019 ◽  
Vol 10 (3) ◽  
pp. 453-472 ◽  
Author(s):  
Koen G. Helwegen ◽  
Claudia E. Wieners ◽  
Jason E. Frank ◽  
Henk A. Dijkstra
Keyword(s):  
Global Warming ◽  
Solar Radiation ◽  
Cost Benefit Analysis ◽  
Cost Benefit ◽  
Policy Option ◽  
Integrated Assessment Model ◽  
Assessment Model ◽  
Solar Radiation Management ◽  
Stochastic Dynamic ◽  
Radiation Management

Abstract. Solar radiation management (SRM) has been proposed as a means to reduce global warming in spite of high greenhouse-gas concentrations and to lower the chance of warming-induced tipping points. However, SRM may cause economic damages and its feasibility is still uncertain. To investigate the trade-off between these (economic) gains and damages, we incorporate SRM into a stochastic dynamic integrated assessment model and perform the first rigorous cost–benefit analysis of sulfate-based SRM under uncertainty, treating warming-induced climate tipping and SRM failure as stochastic elements. We find that within our model, SRM has the potential to greatly enhance future welfare and merits being taken seriously as a policy option. However, if only SRM and no CO2 abatement is used, global warming is not stabilised and will exceed 2 K. Therefore, even if successful, SRM can not replace but only complement CO2 abatement. The optimal policy combines CO2 abatement and modest SRM and succeeds in keeping global warming below 2 K.

Counteracting global warming by using a locally variable Solar Radiation Management

2020 ◽  
Author(s):  
Davide Marchegiani ◽  
Dietmar Dommenget
Keyword(s):  
Global Warming ◽  
Solar Radiation ◽  
Cloud Cover ◽  
Global Climate ◽  
Solar Radiation Management ◽  
Intergovernmental Panel ◽  
Global Average ◽  
Temperature And Precipitation ◽  
Precipitation Response ◽  
Radiation Management

&lt;p&gt;Solar Radiation Management (SRM) is regarded as a tool which could potentially mitigate or completely offset global warming by increasing planetary albedo. However, this approach could potentially reduce precipitation as well, as shown in the latest Intergovernmental Panel on Climate Change (ICPP) 5&lt;sup&gt;th&lt;/sup&gt; report. Thus, although SRM might weaken global climate risks, it may enhance those in some regions. Here, using the Globally Resolved Energy Balance (GREB) model, we present experiments designed to completely offset the temperature and precipitation response due to a&amp;#160;CO&lt;sub&gt;2&lt;/sub&gt;-doubling experiment (abrupt2&amp;#215;CO2). The main idea around which our study is built upon is to employ a localized and seasonally varying SRM, as opposed to the most recent Geo-Engineering experiments which just apply a global and homogeneous one. In order to achieve such condition, we carry out the computation by using an &amp;#8220;artificial cloud cover&amp;#8221;. The usage of this localized approach allows us to globally cut down temperature warming in the abrupt2&amp;#215;CO2 scenario by 99.8% (which corresponds to an increase of 0.07 &amp;#176;C on a global average basis), while at the same time only having minor changes in precipitation (0.003 mm/day on a global average basis). To achieve this the cloud cover is increased by about 8% on a global average. Moreover, neither temperature nor precipitation response are exacerbated when averaged over any IPCC Special Report on Extremes (SREX) region. Indeed, for temperatures, 90% of SREX regions averages fall within 0.3 &amp;#176;C change, with all regional mean anomalies being under 0.38 &amp;#176;C. Whereas, as far as precipitation is concerned, changes go up to 0.01 mm/day for 90% of SREX regions, with all of them changing by less than 0.02 mm/day. Similar results are achieved for seasonal variations, with Seasonal Cycle (DJF-JJA) having no major changes in both surface temperature and precipitation.&lt;/p&gt;

The Controversial One

2021 ◽  
pp. 196-227
Author(s):  
Eelco J. Rohling
Keyword(s):  
Global Warming ◽  
Solar Radiation ◽  
Solar Energy ◽  
Solar Radiation Management ◽  
The Sun ◽  
Earth’S Atmosphere ◽  
Solar Geoengineering ◽  
Earth's Atmosphere ◽  
Earth’S Climate ◽  
Radiation Management

This chapter considers solar radiation management, also known as solar geoengineering, which seeks to manipulate Earth’s climate energy balance by reducing the absorption of incoming solar energy. As the chapter explains, this approach spans a class of proposed measures that has been polarizing the community, with some advocating it as an essential means of keeping global warming within acceptable limits, while others see only grave drawbacks and dangers. The chapter describes the two approaches to limiting the absorption of solar energy: measures taken in space, between Earth and the Sun, to reflect or disperse solar radiation before it even hits Earth’s atmosphere; and measures taken in Earth’s atmosphere or at the Earth’s surface to reflect incoming solar radiation. It goes on to discuss the various proposed methods, their potential, and their drawbacks.

scholarly journals Brief communication: Solar radiation management not as effective as CO<sub>2</sub> mitigation for Arctic sea ice loss in hitting the 1.5 and 2 °C COP climate targets

2018 ◽  
Vol 12 (10) ◽  
pp. 3355-3360 ◽  
Author(s):  
Jeff K. Ridley ◽  
Edward W. Blockley
Keyword(s):  
Global Warming ◽  
Solar Radiation ◽  
Arctic Sea Ice ◽  
Solar Radiation Management ◽  
Cmip5 Model ◽  
Climate Targets ◽  
Arctic Sea ◽  
Radiation Management ◽  
Arctic Sea Ice Loss ◽  
Global Mean

Abstract. An assessment of the risks of a seasonally ice-free Arctic at 1.5 and 2.0 ∘C global warming above pre-industrial levels is undertaken using model simulations with solar radiation management to achieve the desired temperatures. An ensemble of the CMIP5 model HadGEM2-ES uses solar radiation management (SRM) to achieve the desired global mean temperatures. It is found that the risk for a seasonally ice-free Arctic is reduced for a target temperature for global warming of 1.5 ∘C (0.1 %) compared to 2.0 ∘C (42 %), in general agreement with other methodologies. The SRM produced more ice loss, for a specified global temperature, than for CO2 mitigation scenarios, as SRM produces a higher polar amplification.

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