Nicholson says that even if research agencies under Trump avoid research into geoengineering techniques such
as albedo modification, the U.S. intelligence community might remain interested, especially in whether other countries are pursuing their own planetary cooling technologies, which could affect many nations.
Not exact matches
To make up for those shortcomings, the report called for a research program, including smaller scale field trials, whose goal «should be to improve understanding of the range of climate and other environmental effects of
albedo modification,
as well
as understanding of unintended impacts.»
However,
albedo modification would only temporarily mask the warming effect of greenhouse gases and would not address atmospheric concentrations of CO2 or related impacts such
as ocean acidification.
This is known
as albedo (whiteness)
modification, because we would be modifying the Earth's reflectivity.
The deployment of CDR techniques is limited by their cost, not by their riskiness or likely effectiveness (
as is the case for
Albedo Modification approaches).
The ethical and political difficulties deepen when we get to the other kind of geoengineering scheme reviewed in the NRC report, «
albedo modification» — formerly known
as solar radiation management — schemes to reduce the amount of sunlight reaching the Earth's surface.
In other words, rather than presenting climate engineering, and especially solar radiation management (rebranded «
albedo modification»),
as an extreme response to be avoided if at all possible, the report normalises climate engineering
as one approach among others.
After portraying
albedo modification geoengineering approaches
as only a «band aid» that could help ameliorate climatic impacts until we found permanent solutions, Broecker focuses on air capture
as such a potential permanent solution.
Oliver and I have very different views on the dangers of
albedo modification (at least in the next millennium or so); I consider it more a form of geo - vandalism than «geo - poetry»
as some of Oliver's fans like to call it.
Most
albedo modification geoengineering is worth avoiding
as is ocean iron fertilization,
as risks outweigh potential benefits.
Recommendation 1: Completely separate discussion on carbon removal and
albedo modification,
as carbon removal research is best governed in conjunction with — and with the same strong safeguards and governance —
as conventional climate mitigation research.
While the second option, also called
albedo modification, is relatively inexpensive and could quickly lower the planet's temperature, it could have unwanted effects on the Earth's weather pattern, which could potentially bring drought to some regions or be used
as a weapon by governments or certain individuals.