Sentences with phrase «of albedo modification»

In contrast, the purpose of albedo modification technologies is to introduce a new form of human influence on the climate system by altering the amount of sunlight absorbed by the Earth.

Given the divergence between carbon removal and albedo modification approaches, I recommend removing any language in the USGCRP's update to the strategic plan that combines research efforts of albedo modification and carbon removal approaches.

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.

With no talk of «climate emergencies» in the report, we look in vain for any clear rationale for the possible deployment of albedo modification.

The report clearly states that the first - best option for preventing climate change is stopping GHG emissions, and that neither the development of CDR approaches nor the development of Albedo Modification approaches will change this finding.

Improvements in the capacity to monitor direct and indirect changes on weather, climate, or larger Earth systems and to detect unilateral or uncoordinated deployment could help further understanding of albedo modification and climate science generally.

However, the NAS report also noted that the potential effects of albedo modification remain poorly understood and quantified.

Scientists lack even the observational tools to measure the effects of albedo modification, the report states.

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.»

Not exact matches

When Douglas MacMartin of the California Institute of Technology in Pasadena approached the National Science Foundation for support on a modeling effort on [albedo modification], officials told him the work was too theoretical for the engineering division and too applied for the atmospheric science program.

«There is a potential risk that if you cool the planet by albedo modification, it could provide less incentive to reduce reliance on fossil fuels,» says Marcia McNutt, a geophysicist, current editor - in - chief of Science and chair of a committee that evaluated climate intervention techniques for the U.S. National Academy of Sciences.

Critics argue that albedo modification and other «geoengineering» schemes are risky and would discourage nations from trying to reduce their emissions of carbon dioxide, the heat - trapping gas that comes from the burning of fossil fuels and that is causing global warming by absorbing increasing amounts of energy from sunlight.

Among the most uncertain elements in climate models are the effects of aerosols and their interactions with clouds — just the things involved in albedo modification — she says.

Keith adds, however, that the few existing studies suggest albedo modification could help ameliorate some effects of global warming.

We talk through some of the most pressing issues in modern climate science: our chances of staying below 1.5 °C of warming without climate engineering, climate engineering with land - based albedo modifications, and the kinds of societal transformations needed for radical mitigation.

Although the authors caution that their results are approximations intended to guide future modeling efforts, this study provides fundamental information regarding the relative difficulty of achieving desired albedo modification effects and is an important starting point for understanding the limits of what is widely considered one of the most viable solar geoengineering techniques.

That's the only kind of albedo - modification geoengineering I could countenance, and by the time that is needed, presumably we'll have the wisdom to deploy it safely and the technology to make it robust.

Conversely, any future decision about albedo modification will be judged primarily on questions of risk, and there are many opportunities to conduct research that furthers basic understanding of the climate system and its human dimensions — without imposing the risks of large - scale deployment — that would better inform societal considerations.

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.

In the absence of CO2 reductions, albedo - modification activities would need to be sustained indefinitely and at increasingly large scales to offset warming, with severe negative consequences if they were to be terminated.

Present - day observational capabilities lack sufficient capacity to monitor the environmental effects of an albedo - modification deployment.

While many albedo - modification techniques have been proposed, the committee said two strategies that could potentially have a significant impact are injection of aerosols into the stratosphere and marine cloud brightening.

Separating CDR from Albedo Modification has been in the works for a long time — and I am hopeful that this report will definitively end the discussion of whether CDR falls under the geoengineering umbrella.

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).

First, the NAS released two distinct reports — one on CDR and the other on Albedo Modification — with language explicitly stating that these two categories of «climate interventions» should not be analyzed together.

The below table from the NAS report highlights a number of key differences between CDR and Albedo Modification proposals.

The Forum for Climate Engineering Assessment's Academic Working Group (AWG) on International Governance of Climate Engineering is an international group of senior academics that have been assembled to formulate perspectives on the international governance of climate engineering research and potential deployment, with a focus on proposed solar radiation management / albedo modification technologies.

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.

So there is a contradiction buried in the report: it recommends the initiation of a federal research program into albedo modification but does not give a plausible analysis of the circumstances in which the solar shield might be deployed.

The modification of all feedback parameters results in changes of the sum of all feedbacks (water vapour, cloud, lapse rate and albedo), spanning a minimum — maximum range of 71 % (63 %) of the mean value for the correlated (uncorrelated) ensemble.

In February, the National Academies of Science released two major reports on geoengineering, one on carbon dioxide removal technologies (to draw down carbon dioxide from the atmosphere and hence reduce the greenhouse effect) and the other on «albedo modification» or solar radiation management technologies (to reflect a fraction of sunlight back to space and thereby cool the planet).

Regarding the other half of the warming, what fraction of that is due to regional to super regional scale surface / near surface waste heat, albedo / vegetation modification, and, disturbances to boundary layer laminar flows by human made structures and tree plantings?

I might even want to know if albedo modification could be used to overcome those problems of hysteresis, and if so how much of it would be needed for how long.

I'd say the perception / communications question goes to the very core of this debate, whether it's carbon dioxide removal or albedo modification aka «solar geoengineering».

Again, carbon removal approaches need strict and thorough governance and ethical consideration, but the type of governance questions for carbon removal are of a nature best addressed in conjunction with conventional climate mitigation approaches, not in conjunction with albedo modification approaches.

Solar Radiation Management (SRM) or «albedo modification» is a class of technologies that could lower global average temperatures and offset some of the worst impacts of climate change by reflecting a portion of incoming solar radiation back into space before that radiation could be trapped by greenhouse gases in the atmosphere.

Mengis, Nadine; et al. (2016): Assessing climate impacts and risks of ocean albedo modification in the Arctic.

The following SPP 1689 poster will be exhibited at the AGU: GC13C - 1154: The Climate Potentials and Side - Effects of Large - Scale terrestrial CO2 Removal — Insights from Quantitative Model Assessments — Monday, 15 December 2014, 13:40 - 18:00, Moscone West - Poster Hall, Lena Boysen, Vera Heck, Wolfgang Lucht, Dieter Gerten GC13C - 1155: On nutrients and trace metals: Effects from Enhanced Weathering — Monday, 14 December 2015, 13:40 - 18:00, Moscone South - Poster Hall, Thorben Amann, Jens Hartmann B23G - 0682: Revisiting ocean carbon sequestration by direct injection: A global carbon budget perspective — Tuesday, 15 December 2015, 13:40 - 18:00, Moscone South - Poster Hall, Fabian Reith, David Keller, Torge Martin, Andreas Oschlies C41B - 0702: Assessing the potential and side effects of ocean albedo modification in the Arctic — Thursday, 17 December 2015, 08:00 - 12:20, Moscone South - Poster Hall, Nadine Mengis, Andreas Oschlies, David Keller, Torge Martin

That process should begin now and subsequent guidance on the governance of albedo - modification research established before the U.S. supports any scale - up of albedo - modification research.

[The Committee] oppose [s] deployment of albedo - modification techniques, but recommend [s] further research, particularly «multiple - benefit» research that simultaneously advances basic understanding of the climate system and quantifies the technologies» potential costs, intended and unintended consequences, and risks.

I fear that the defining issue of the latter part of the twenty - first century will be the application of geoengineering, particularly albedo modification.