Re: [geo] SATAN

Glad you had fun, Andrew.For me, this is clear proof of your unseriousness and childishness - not to mention the overall threat you pose to this research field as a whole towards any kind of legitimacy.I personally don’t want to be associated even remotely with anything you do now or in the future,

Re: [geo] [CDR] Tiresome nomenclature squabbles

If you ask people what geoengineering is, they will either include chemtrails, or recycling, depending on the context (there was research around it at some point in the past). >From the point of view of someone part, in different contexts, of groups >trying to get the message across that we sh

Re: [geo] Make Sunsets: Clarifications!

Aside from simply being a greenhouse gas (and not to mention how it is produced - countries use weather balloons filled with hydrogen but the machinery to produce H on site is expensive, and the handling procedures are complex, see https://www.fp2fire.com/hydrogen-balloon-inflation/), hydrogen i

Re: [geo] Make Sunsets: Clarifications!

Luke,I will keep finding this rather murky as long as you keep being so hand-wavy about your numbers and then claiming you can offset a “substantial amount of warming” in your homepage.Weather balloons have different bursting altitudes depending on 1) payload 2) amount of helium used to inflate 3)

Re: [geo] Make sunsets - Calculating Cooling

Thanks Olivier for putting the numbers together - wanted to do it as well but I’m still conflicted over whether it’s better to ignore them or call out the BS.Few more things (probably some are new) I also found while browsing their website that suggest this is just really a silly publicity stunt:T

Re: [geo] Make sunsets - Calculating Cooling

Thanks Olivier for putting the numbers together - wanted to do it as well but I’m still conflicted over whether it’s better to ignore them or call out the BS.Few more things (probably some are new) I also found while browsing their website that suggest this is just really a silly publicity stunt:Th

[geo] AGU Draft position statement on Climate Intervention

Daniele Visioni, PhD Research Associate Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY US phone: (607)-280-0525 e-mail: daniele.visi...@cornell.edu website: https://dan-visioni.github.io/ Check out our latest published papers

Re: [geo] Volcanic Climate Warming Through Radiative and Dynamical Feedbacks of SO2 Emissions

Scale and location matter: by actually reading the paper, most of the SO₂ is injected well below the stratosphere (20% in the PBL, 20% between 13 and 17km) to simulate a kind of flood basalt eruptions that happened over 15 Ma years ago, continuous over an amount of years. This leads to a warming

Re: [geo] Economic interests and ideologies behind solar geoengineering research in the United States

Dear Maiken, I can’t but give you my personal opinion: the people who wrote in the blog have constantly demanded that governments and public research institutions not fund research into geoengineering at all. That’s the whole goal of the website on which the article is hosted (they also demand

Re: [geo] Economic interests and ideologies behind solar geoengineering research in the United States

Talking on behalf of one of the efforts listed in Table 1, I want to stress that GeoMIP is not funded in any way by Silver Lining. Anyone interested in facts can find a public list of supporters and funding for GeoMIP here http://climate.envsci.rutgers.edu/GeoMIP/support.html Travel support for

Re: [geo] Nuclear Winter and SRM (including termination shock)

Dear Gideon, not to pile on but I feel like this should be corrected: none of the most current IPCC projections say that 550ppm have a 10% chance of leaving us with 6K of warming. Even the most high sensitivity models in CMIP6 only show a ECS of, at most, 5 per doubling of CO₂ (so 560), but the

[geo] AGU Fall Meeting 2022: GC012. Advances in Solar Radiation Modification (SRM) Research

us Group: Global Environmental Change Index Terms: 0305 Aerosols and particles [ATMOSPHERIC COMPOSITION AND STRUCTURE] 0321 Cloud/radiation interaction [ATMOSPHERIC COMPOSITION AND STRUCTURE] 3305 Climate change and variability [ATMOSPHERIC PROCESSES] 3311 Clouds and aerosols [ATMOSPHERIC PROCESSES] Co

Re: [geo] Possible Breakthrough: Sulfate Aerosol Geoengineering from Earth's Surface

We do have a study case in the paper where we inject in the upper troposphere rather than at the surface, for which the load necessary is much lower and the surface concentrations of COS result to be lower. As Alan said, this still needs a lot of research in various fields (ecology especially),

Re: [geo] Need info

Hi Jessica, These are the ones I always use, starting from this popular piece: https://www.theverge.com/2020/1/31/21115862/davos-1-trillion-trees-controversy-world-economic-forum-campaign

Re: [geo] RE: RECENTLY PUBLISHED | The Carnegie Climate Governance Initiative's Latest Knowledge Products

Yes: https://unfccc.int/ https://unfccc.int/files/essential_background/background_publications_htmlpdf/application/pdf/conveng.pdf see Article 2. > On 8 Apr 2022, at 08:41, SALTER Stephen wrote: > >  > Hi All > > Can anyone point me to a dedicated, formal, international group for the > go

[geo] Meeting summary for the 11th GeoMIP meeting & GRS deadline

the website, > https://www.grc.org/climate-engineering-conference/2022/ > <https://www.grc.org/climate-engineering-conference/2022/> . Best, Daniele Visioni and Alan Robock -- You received this message because you are subscribed to the Google Groups "geoengineering" group

Re: [geo] IPCC AR6 WG2 - Climate Change 2022: Impacts, Adaptation and Vulnerability

Section 16.1.2 explains the rationale stating "Given that solar radiation modification (SRM) could also be considered a response with significant implications for climate risks across scales, this chapter also includes Cross-Working Group Box SRM." Therefore what’s in WG2 is essentially what was

[geo] Gordon Research Seminar on Climate Engineering - for Early Career Scientists

ring. Any questions may be directed to the GRS chairs, Katie Dagon (kda...@ucar.edu <mailto:kda...@ucar.edu>) and Daniele Visioni (dv...@cornell.edu <mailto:dv...@cornell.edu>). Sincerely, Katie Dagon and Daniele Visioni, GRS Chairs -- You received this message because you

Re: [geo] Exploration of a novel geoengineering solution: lighting up tropical forests at night

Dear all, ESD is a journal that allows for community comments during peer review. There’s one already: https://esd.copernicus.org/preprints/esd-2021-85/ I haven’t read the paper carefully (nor am I an ecologist) but I trust Jessica if she says i

Re: [geo] Heterogeneous Reactivity of HCl on CaCO3 Aerosols at Stratospheric Temperature

There have been volcanic eruptions in the past with a significant co-emission of halogens. See for instance this recent study https://acp.copernicus.org/articles/21/9009/2021/acp-21-9009-2021.html So in a similar case (unlikely but possible) this would matter. > On 3 Aug 2021, at 18:19, Kevin L

[geo] Climate engineering research is essential to a just transition and sustainable future

https://thehill.com/opinion/energy-environment/559859-climate-engineering-research-is-essential-to-a-just-transition-and <https://thehill.com/opinion/energy-environment/559859-climate-engineering-research-is-essential-to-a-just-transition-and> BY BEN KRAVITZ, DANIELE VISIONI, LISA H. S

[geo] AGU Fall Meeting session on Climate Engineering

Abstract can be submitted here https://www.agu.org/Fall-Meeting/Pages/Present/Abstracts by the 4th of August. https://agu.confex.com/agu/fm21/prelim.cgi/Session/118900 AGU 20

Re: [geo] Petition to shut down the SCoPEx project

Hi Jessica, there is a petition that I am aware of, https://docs.google.com/forms/d/e/1FAIpQLScT7lh0MvAfisius-_EIjEcPpakmrqfb3eylVTmOTc0X3yNaQ/viewform organized by Gideon Futerman and aimed at

Re: [geo] [CDR] CO2 shrinks the stratosphere

Added SO2 would change stratospheric temperature locally in a significant way, as it was observed after volcanic eruptions. The actual value would depend on the size of the particles formed and on the S-burden, together with the changes produced chemically on stratospheric ozone, which in turn m

[geo] Eleventh GeoMIP meeting

Dear all, we would like to let you know that we have fixed the dates for the next GeoMIP Meeting. Sadly, and hopefully for the last time, it will have to be online. The dates we have settled upon are July 8th (8:00am-11:00am EDT, 14:00-17:00 CET) and July 9th (11:00am-2:00pm EDT, 17:00-20:00 C

Re: [geo] Some say we can ‘solar-engineer’ ourselves out of the climate crisis. Don’t buy it Ray Pierrehumbert and Michael Mann

into this possibility will have > uncomfortable thoughts in future. > > I am too old to understand ‘skin in the game’. Please advise. > > Stephen > > > Emeritus Professor of Engineering Design > School of Engineering > Mayfield Road > Edinburgh EH9 3DW > 0131

Re: [geo] Some say we can ‘solar-engineer’ ourselves out of the climate crisis. Don’t buy it Ray Pierrehumbert and Michael Mann

For my own mental sanity I will assume this is really cheap sarcasm (and I can assure you this is really not funny). In the same spirit I might suggest that if such a virus was engineered to prevent old academics with no skin in the game from venting their uninformed opinions on any subject the

[geo] After Geoengineering: Climate Tragedy, Repair and Restoration

ere <https://cornell.box.com/s/8stv2gzny2lv45m4ezh3ipgjggii95aa>. Discussants Karen Pinkus, Professor of Italian and Comparative Literature and Faculty Fellow, Atkinson Center for a Sustainable Future Daniele Visioni, Climate Researcher and Postdoctoral Associate, Sibley School of Mechani

Re: [geo] Grand Solar Minimum 2020-2050 ends case for geo engineering

Valentina Zharkova is very well known for publishing bogus science on the connection between solar activity and climate. Her last paper in SciRep was retracted one week after publication https://www.nature.com/articles/s41598-020-61020-3 The one article linked is an editorial in a journal whose

Re: [geo] In 2040 We Will Collectively Decide to Flood the Atmosphere With Aerosols

Meteorology is important, but so is atmospheric chemistry. Saying that sulfate would “remove the ozone” (it’s complicated, and there are chemical and dynamical factors, and in also depends on the current amount of CFCs in the atmosphere, and on latitude) and that it “last for years like CFCs” (w

[geo] Is Turning Down the Sun a Good Proxy for Stratospheric Sulfate Geoengineering?

me for the PDF) https://onlinelibrary.wiley.com/share/author/SXFS7SZMTKV28YPVVG53?target=10.1029/2020JD033952 <https://onlinelibrary.wiley.com/share/author/SXFS7SZMTKV28YPVVG53?target=10.1029/2020JD033952> Is Turning Down the Sun a Good Proxy for Stratospheric Sulfate Geoengineering? Dan

Re: [geo] THE COOLING CONUNDRUM REVERSING CLIMATE CHANGE TO REFREEZE THE ARCTIC

injection is limited to spring Walker Raymond Lee, Douglas G MacMartin, Daniele Visioni, Ben Kravitz https://www.essoar.org/doi/10.1002/essoar.10505988.1 <https://www.essoar.org/doi/10.1002/essoar.10505988.1> Best, Daniele //// Daniele V

[geo] Re: Reduced poleward transport due to stratospheric heating under geoengineering

11 Jul 2020, 08:40 Andrew Lockley, <mailto:andrew.lock...@gmail.com>> wrote: > https://www.essoar.org/doi/abs/10.1002/essoar.10503509.1 > <https://www.essoar.org/doi/abs/10.1002/essoar.10503509.1> > > Reduced poleward transport due to stratospheric heating under geoengineeri

[geo] Seasonally Modulated Stratospheric Aerosol Geoengineering Alters the Climate Outcomes

derlying the regional responses.” The PDF should be available for download, but if not please drop me a line if interested. Best, Daniele //////// Daniele Visioni, PhD Post-doctoral Associate Sibley School of Mechanical and Aerospace Engineerin

Re: [geo] Personal sulfate budget

Hi Andrew, It is not clear to me where your assertion “10kg sulphate in the stratosphere for every year of their life” comes from. The anthropic-emitted sulfate has a very short lifetime and mostly does not reache the stratosphere. That’s why the lifetime of that sulfate has generally a lifetime

Re: [geo] Renaming this Group - Solar Geoengineering or SRM Geoengineering

field. The more we narrow it down, the more we risk missing. Daniele Daniele Visioni, PhD Post-doctoral Associate Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY US phone: (607)-280-0525 e-mail

Re: [geo] Response of Surface Ultraviolet and Visible Radiation to Stratospheric SO2 Injections

scales somewhat linearly, it would always remain a fraction of the overall direct effect even in simulations with varying amount. //// Daniele Visioni Post-doctoral Associate Sibley School of Mechanical and Aerospace Engineering, Cornell Univ

Re: [geo] (must read) Upper tropospheric ice sensitivity to sulfate geoengineering

agreement with Cirisan et al. (2013), is that this is a negligible effect (some mW/m^2), expecially compared to the thermo-dynamical response that we show in our paper. Best, Daniele Daniele Visioni PhD Student Dipartimento di