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The paper's design is for an aircraft that can fly to 20 km (which is high enough) carrying 13.5 tons of SO2. This would mean ~180 sorties per day with each aircraft flying twice a day, with excess capacity for repairs, etc. The mission profile is shown in the figure. 2/pic.twitter.com/MheWwTVvS7
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This paper outlines an initial design for an aircraft that could deploy stratospheric aerosol geoengineering at scale, finding that ~80 aircraft would be needed to deploy 1 Mt SO2. Some more highlights follow https://arc.aiaa.org/doi/abs/10.2514/6.2020-0618 … 1/pic.twitter.com/bjK99AbkQK
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Either the model is robust in predicting the impacts of warming AND cooling and we should heed its predictions, or it is not robust for either and we should seek to understand why. Some great quotes from the authors on this. 8/pic.twitter.com/5EAcQy0zYL
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Working paper from
@MariiaBelaia1 "Optimal Climate Strategy with Mitigation, Carbon Removal, and Solar Geoengineering" coupling together all these approaches in a consistent way into the DICE model for the first time (I believe). Here's the key figure https://arxiv.org/ftp/arxiv/papers/1903/1903.02043.pdf …pic.twitter.com/cmJcGaLnQx
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While land-use change has had the greatest impact on biodiversity to date
@tnewbold31 predicts that climate change will have a greater impact by 2070 with a combined effect that could see species richness drop by between 10 and 50% by 2070! https://royalsocietypublishing.org/doi/full/10.1098/rspb.2018.0792 …pic.twitter.com/oquaDro5wz
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IPBES estimate of the relative contribution of different drivers of ecosystem impacts (Figure 2.23). Land/sea use change has a relative impact of 30%, followed by direct exploitation (23%), climate change (14%), pollution (14%), invasive alien species (11%), and other (9%)pic.twitter.com/iQwqL3EJVv
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Another IPBES nugget: Figure 2.1.16. Mass of river plastic flowing into oceans in tonnes per year.pic.twitter.com/CekFXfXNf2
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"The global rate of species extinction is already at least tens to hundreds of times higher than the average rate over the past 10 million years and is accelerating (established but incomplete)pic.twitter.com/0n32PIQVEG
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Reading the sobering IPBES biodiversity impact report. Here are some highlights (lowlights?): https://www.ipbes.net/global-assessment-report-biodiversity-ecosystem-services …pic.twitter.com/rVbURwzLhF
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Cheng et al. look at soil moisture changes under stratospheric aerosol geoengineering (GLENS) and find that it could offset global trends but there are some exceptions, highlighted in this picture. more on this... 1/ https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018JD030237 …pic.twitter.com/yGdLvJydeQ
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Just bought a copy of
@hollyjeanbuck's new book: "After Geoengineering: Climate Tragedy, Repair, and Restoration" Looking forward to getting stuck in!pic.twitter.com/2KkqatMZB8
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A new article: "The Panglossian politics of the geoclique" is a direct response to my Termination Shock piece with Andy Parker. Seeing a full-throated critique of my work in a journal feels like an important academic milestone. https://ore.exeter.ac.uk/repository/handle/10871/38931 …pic.twitter.com/Y86fIp5JP6
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"Technical characteristics of a solar geoengineering deployment and implications for governance" with Doug MacMartin,
@joshuahorton533 and Ben Kravitz. A decision to deploy solar geoengineering will not just be a Yes / No question, here we explain some of the complications.pic.twitter.com/ZsiYZ6XW0w
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Here's a direct quote from the executive summary of the chapter which addressed solar geoengineering: "Models consistently suggest that SRM would generally reduce climate differences compared to a world with elevated GHG concentrations and no SRM..." Full quote in imagespic.twitter.com/G59s221Ctf
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Agreed. So some quick rules for geo funding: A: Only individuals / orgs with good / neutral source of money, i.e. without link to fossil fuels (type 1 and 2) B: Transparency on who is funding and goals C: Funders' Influence on research conduct restricted to evaluating progresspic.twitter.com/2GVxWcxC32
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Here's the article: https://www.nature.com/articles/s41558-019-0564-z … and their interesting summary paragraph arguing that the seeming contradictions between their respondends answers suggests that moral concerns dominate, and that as climate impacts worsen support for solar geo will rise.pic.twitter.com/znZ4bhN0J3
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Some interesting new results out in
@NatureClimate Those more pessimistic about global efforts to rein in global warming are more opposed to solar geoengineering than those who are less pessimistic. Though those who feel their own region will suffer greatly are more supportive.pic.twitter.com/6xNOqprf7d
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Really interesting result in Nijsse et al. (2019): "Cooling or hiatus decades over the historical period, which have been relatively uncommon, are more than twice as likely in a high-ECS world (ECS = 4.5 K) compared with a low-ECS world (ECS = 1.5 K)." https://www.nature.com/articles/s41558-019-0527-4 …pic.twitter.com/yLB1JZKThT
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Got great responses on books and simple models for teaching climate. Anyone got any good sources for visuals and videos?
@PatrickTBrown31 made this nice figure using https://www.flaticon.com/ And this is a great website for climate-relevant photos: https://www.climatevisuals.org/images pic.twitter.com/d74kYAq0sH
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