[geo] Re: Analysis_of_global_methane_changes_after_the_1991_.pdf
Other papers exploring the issue Can we explain the observed methane variability after the Mount Pinatubo eruption? Banda et al (2016) https://www.atmos-chem-phys.net/16/195/2016/ The effect of stratospheric sulfur from Mount Pinatubo on tropospheric oxidizing capacity and methane, Banda et al (2014) https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2014JD022137 On Mon, 3 Dec 2018, 14:50 Andrew Lockley Poster's note: really interesting paper on > SO2/CH4 interactions. Tl;dr it's complicated > -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
[geo] Newsletter for week 49 of 2018
Title: Climate Engineering Newsletter Climate Engineering Newsletter for Week 49 of 2018 4.12.2018, Symposium: (Sulphate) Geoengineering - Feasibility, Risks, Alternatives, Utrecht / Netherlands 04.12.2018, Online Workshop: Greenhouse Gas Removal 06.12.2018, Online Workshop: Greenhouse Gas Removal 10.-14.12.2018, Conference: AGU Fall Meeting 2018, Washington DC / USA 17.01.2019, Online Workshop: Greenhouse Gas Removal 22.01.2019, Online Workshop: Greenhouse Gas Removal (new) 5.02.2019, Discussion: Ocean Climate Geoengineering Roundtable, Washington DC / USA 11.-13.03.2019, Conference: Scenarios Forum 2019, Denver, CO / USA 18.-21.03.2018, Conference: Geoscience & Society Summit, Stockholm / Sweden 19.-23.03.2019, Workshop: Climate Change Impacts and Risks in the Anthropocene (C-CIA), Riederalp, Canton of Valais, Switzerland 8.-13.09.2019, Summer School: 18th International SWISS CLIMATE SUMMER SCHOOL, Monte Verità, Ascona / Switzerland 10.01.2019, Call for Abstracts: Ocean-based negative emission technologies: Feasibility, costs and side-effects (EGU) (new) 11.12.2018, Job at Union of Concerned Scientists 14.01.2019, Job at UCLA (no deadline), Job at University of Auckland, New Zealand (no deadline), Job at Lawrence Livermore National Laboratory (no deadline), Job at University of Virginia Nauer, P.; et al. (2018): Termite mounds mitigate half of termite methane emissions C2G2: Governing large-scale carbon dioxide removal: are we ready? (no new projects) Helmholtz: Climate Engineering: Tinkering the Climate (German) BBC News: Climate change: Can 12 billion tonnes of carbon be sucked from the air? UrbDeZine: Climate Change Geoengineering: Moral Hazard of the Moral Hazard argument The Times: Fake eruption could dim sun and combat global warming npla: Geoengineering: Climate experiments at the expense of the poor (German) Der Tagesspiegel: It does not work without geoengineering (German) The Conversation: COP24: rewilding is essential to the UK’s commitments on climate change Earther: No, Scientists Didn’t Just Suggest We ‘Dim the Sun’ to Stop Climate Change heise online: Geoengineering: Scientists want to test a way to cool the earth (German) Oil and Gas Climate Initiative: OGCI Climate Investments announces progression of the UK’s first commercial full-chain Carbon Capture, Utilization and Storage Project Biomass: Drax: Bioenergy carbon capture, storage pilot now underway LegalPlanet: Don’t Believe Everything That You Read Nature: First sun-dimming experiment will test a way to cool Earth Mirror: Scientists are suggesting we dim the Sun to save the world FAZ: We are not prepared for an emergency (German) FAZ: Manipulating the climate? (German) C2G2: Governing Carbon Dioxide Removal The Heartland Institute: Geo-engineering: Ignoring the Consequences DieDebatte: Live debate: Geoengineering - manipulating the climate? (German) idw: COP24: Acute pressure to act despite expansion of CO2 budget (German) Business Green: Net Zero Now Die Debatte: "We would have stored CO2 in the ground for years." (German) Süddeutsche Zeitung: Pie in the Sky (German) To unsubscribe please send short message to i...@climate-engineering.eu or use the web interface (under "user login"). In case something is missing in the newsletter, send us an email. -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
Re: [geo] Re: Analysis_of_global_methane_changes_after_the_1991_.pdf
Beside sulfur compounds, water vapour and ash particles volcanic eruption plumes contain even hydrogen chloride. Ash particles contain oxidic iron in the single digit percent range. Within the eruption plume at least parts of said ash iron exists as iron(III) oxides. Because of the presence of hydrogen chloride (HCl) in the eruption plume the ash particles will contain even iron(III)chloride. The content of iron chlorides in the eruption ash had been revealed by Suzuki & Dingwell, (2014). Wittmer & Zetzsch (2016) revealed that iron(III) oxide aerosol absorbs HCl even in the ppb concentration range and evolves atomic chlorine by sunlight photolysis. Baker et al., (2011) revealed atomic chlorine content in the Eyjafjallajökull eruption plume and Rose et al., (2006) found volcanic plumes depleted in methane. Because atomic chlorine is an oxidant to methane acting about 20 times faster than OH radicals all these findings coincide with the direct methane depletion effect of volcanic plumes. Both publications presented in the post below did not take into account this direct methane depletion effect by atomic chlorine in the volcanic eruption plume induced by the iron(III) content of the ash aerosol. Because the iron salt content of volcanic ash is easyly dissolvable it presents a micronutrient to plants and even the phytoplankton. This well established eruption ash effect increases the CO2 depletion. Usually the whole cause of the Pinatubo eruption cooling effect is attributed gladly to the stratospheric sulfate aerosol cooling. This is wrong because the two greenhouse gas depletion effects are mostly overlooked as demonstrated. Baker et al., (2011): Investigation of chlorine radical chemistry in the Eyjafjallajökull volcanic plume using observed depletions in non-methane hydrocarbons. Geophys. Res. Lett., 38, L13801 Rose et al., (2006): Atmospheric chemistry of a 33-34 hour old cloudfrom the Hekla Volcano (Iceland): Insights from direct sampling and the application of chemical box modeling. J. Geophys. Res. Atmos., 111, D20206 Suzuki & Dingwell, (2014): HCl uptake by volcanic ash in the high temperature eruption plume: Mechanistic insights. Geochimica et Cosmochimica Acta, 144, 188-201 Wittmer & Zetzsch (2016): Photochemical activation of chlorine by iron-oxide aerosol. J. Atmos. Chem., doi:10.1007/s10874-016-9336-6 Franz D. Oeste -- Originalnachricht -- Von: "Andrew Lockley" An: geoengineering@googlegroups.com Gesendet: 03.12.2018 16:01:57 Betreff: [geo] Re: Analysis_of_global_methane_changes_after_the_1991_.pdf Other papers exploring the issue Can we explain the observed methane variability after the Mount Pinatubo eruption? Banda et al (2016) https://www.atmos-chem-phys.net/16/195/2016/ The effect of stratospheric sulfur from Mount Pinatubo on tropospheric oxidizing capacity and methane, Banda et al (2014) https://agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2014JD022137 On Mon, 3 Dec 2018, 14:50 Andrew Lockley wrote: Poster's note: really interesting paper on SO2/CH4 interactions. Tl;dr it's complicated -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "geoengineering" group. To unsubscribe from this group and stop receiving emails from it, send an email to geoengineering+unsubscr...@googlegroups.com. To post to this group, send email to geoengineering@googlegroups.com. Visit this group at https://groups.google.com/group/geoengineering. For more options, visit https://groups.google.com/d/optout.
