Dear Ben--I've not yet read the article but the results presented in the
chart are for me, at least at first glance, a bit baffling.
How does CO2 go up when the world becomes cooler with SRM, which
presumably leads to less use of fossil fuel energy which one would
expect would lead to CO2 emissions going down?
While this is not the intent, the coloring code is strange in having
temperature going up in green (though this generally viewed as
detrimental) and temperature going down, which is beneficial, in brown,
which is presumably good. It would seem that an alternative coloring
scheme could have been chosen.
For precipitation, the coloring code is also strange, where higher
precipitation, which tends to come most in intense storms is green, a
color that is viewed as generally referring to something good, and going
down is brown. Same with river runoff. What it would really have been
nice to have is a comparison for soil moisture, level and stability.
And how is it that bio energy goes up whether one has SRM or not--is it
that more global warming leads to more available dead vegetation as
stress kills ecosystems, so more energy, whereas for SRM, there is more
live vegetation, and this can be harvested to indicate more potential
bio energy?
I also think the ordering of the columns makes the presentation of the
results a bit harder to get a sense of. I'd like to have had the
ordering be based on not SRM or SRM and then sub-breakdown based on
scale, so global versus CONUS, rather than as ordered.
Best, Mike MacCracken
On 9/22/24 8:20 AM, Geoengineering News wrote:
https://www.sciencedirect.com/science/article/pii/S1364032124006609
*Authors*
Andrew Kumler, Ben Kravitz, Caroline Draxl, Laura Vimmerstedt, Brandon
Benton, Julie K. Lundquist, Michael Martin, Holly Jean Buck, Hailong
Wang, Christopher Lennard, Ling Tao
https://doi.org/10.1016/j.rser.2024.114934
*19 September 2024*
*Highlights*
•Climate change is projected to have varying impacts on renewable
energy sources.
•Solar radiation modification could also impact renewable energy
sources, if applied.
•More research on solar radiation modification impacts on renewable
energy is needed.
*Abstract*
Solar radiation modification (SRM) is a possible deliberate approach
to decrease or reflect incoming solar radiation with the goal of
reducing global temperatures, which have increased over the last
decades due to high atmospheric greenhouse gas concentrations.
Stratospheric aerosol injection, specifically, has shown potential for
successfully reducing global temperatures in climate model
simulations. Despite the growing literature in the areas of climate
change and SRM, their combined effects on renewable energy generation,
a climate change mitigation strategy, have not been addressed. In this
review paper, we synthesize previous literature on the possible
effects of climate change and SRM on renewable energy resources (i.e.,
wind energy, solar energy, biomass energy, and hydropower), review the
status of climate change and SRM research, and explore potential
effects of SRM on renewable energy primarily in the Continental United
States (CONUS), but with global perspectives as well. We discuss the
research challenges and impacts of SRM on renewable energy and
conclude by discussing the potential implications of SRM for
renewables for SRM governance and policy. This work is not advocating
for or against SRM. It is highlighting an important potential impact
for future decision makers.
Fig. 3. Projected mean climate change (CC) and solar radiation
modification (SRM) impacts on meteorological variables relevant to
renewable energy for the Continental United States (CONUS) and
globally, and potential changes in solar energy, wind energy, hydro
energy, and bio energy. Results are based on the literature herein,
but do not reflect the spatiotemporal complexity of each variable,
where the sign of change could be different than presented here
*Source: ScienceDirect *
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