Oddly there's a section on SRM in the summary for policymakers - I would have assumed that would belog in the Working Group 3 report.... Here's my take:
https://revkin.bulletin.com/un-climate-panel-says-nations-must-boost-resilience-even-as-they-cut-heating-gases Geoengineering - The report includes a short critique of climate engineering, specifically proposals that would artificially add aerosols to the atmosphere to reflect some sunlight back to space, offsetting some warming. There's been a rising tide of opposition to "solar radiation management," most notably a recent call by hundreds of scientists for an international "non-use agreement." <https://l.bulletin.com/l.php?u=https%3A%2F%2Fwww.solargeoeng.org%2F&h=AT1xjPZlAkGoq9GQT3v6kRdWkQ4a6JCnV0-NaLyq_DMSLfSEPaaO6fvEPD0avQ0gqBqLZH7P6NjavnblL4TpE2BuZcoHx_bdCfkFawrMaC7Dd1PcmYPL-Sa0skR55SD_jIlrKvUCaA> I'm not sure why this form of geoengineering made it into the adaptation report. Blocking sunlight is a form of warming mitigation and any assessment really belongs in next month's report on policies for slowing warming. Here are points the adaptation-report authors describe as having high confidence: Solar radiation modification approaches, if they were to be implemented, introduce a widespread range of new risks to people and ecosystems, which are not well understood. Solar radiation modification approaches have potential to offset warming and ameliorate some climate hazards, but substantial residual climate change or overcompensating change would occur at regional scales and seasonal timescales. Large uncertainties and knowledge gaps are associated with the potential of solar radiation modification approaches to reduce climate change risks. Solar radiation modification would not stop atmospheric CO2 concentrations from increasing or reduce resulting ocean acidification under continued anthropogenic emissions. For what it's worth, I predict a non-use agreement on solar radiation management will never happen. But if it did it would indirectly chill important research on aerosols' climate impacts in the atmosphere, just as a push to stop rogue iron-seeding tests in the ocean killed support for more careful scientific research on the matter. A decade was lost, although new efforts are planned <https://www.science.org/content/article/draw-down-carbon-and-cool-planet-ocean-fertilization-gets-another-look> . On Mon, Feb 28, 2022 at 10:28 AM Renaud de RICHTER < [email protected]> wrote: > https://www.ipcc.ch/report/ar6/wg2/ > The Working Group II contribution to the IPCC Sixth Assessment Report > assesses the impacts of climate change, looking at ecosystems, > biodiversity, and human communities at global and regional levels. It also > reviews vulnerabilities and the capacities and limits of the natural world > and human societies to adapt to climate change. > Full report (about 3700 pages) > https://report.ipcc.ch/ar6wg2/pdf/IPCC_AR6_WGII_FinalDraft_FullReport.pdf > > Technical summary (about 100 p) > > https://report.ipcc.ch/ar6wg2/pdf/IPCC_AR6_WGII_FinalDraft_TechnicalSummary.pdf > > Summary for Policymakers (about 40 p) > https://report.ipcc.ch/ar6wg2/pdf/IPCC_AR6_WGII_SummaryForPolicymakers.pdf > > > -- > 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 [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/geoengineering/CAHodn982odrbvYsxqhvZjzHySfouEa1wbu6DyuyV3jXwLeW7nw%40mail.gmail.com > <https://groups.google.com/d/msgid/geoengineering/CAHodn982odrbvYsxqhvZjzHySfouEa1wbu6DyuyV3jXwLeW7nw%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- *ANDREW REVKIN* *Founding Director, Initiative on Communication & Sustainability* *Columbia University Climate School* *Sustain What newsletter <http://revkin.bulletin.com>* *Sustain What webcast* <http://j.mp/sustainwhatlive> *+1 914.441.5556 phone, @revkin Twitter* *@revkin <http://twitter.com/revkin>, Facebook <https://www.facebook.com/andrew.revkin.5>, Music <http://j.mp/revkinmusic>, Books <https://www.amazon.com/Andrew-Revkin/e/B001IXNSRK/ref=sr_tc_2_0?qid=1390325965&sr=1-2-ent>* -- 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 [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/geoengineering/CA%2Bakwtb%3DnU0YmYcBJ%3DLcg%2B6thjDby7_1WweCuqCADHb-sfKE9Q%40mail.gmail.com.
