IPCC第六次報告書ーWG1の発表

Jessica Tierney @leafwax

Back to the "parts". One step up from the full report is the Technical Summary, which is what it sounds like, a detailed summary of the full report. 9/

Jessica Tierney @leafwax

Contributing Authors are not officially part of the IPCC process (drafting, reviewing, etc) but are folks in the community who are specialists and helped by contributing some text or sometimes a figure 8/

Jessica Tierney @leafwax

The Lead Authors (like me) do a lot of the writing and figure making. In some cases we are responsible for entire subsections within the chapter. We get help though from the Contributing Authors, who we might ask to draft up a paragraph or two about a specific topic 7/

Jessica Tierney @leafwax

The Coordinating Lead Authors (listed first) do what their name implies, they coordinate the production of the chapter, take on a lot of extra admin-style work, and are ultimately responsible for meeting deadlines 6/

Jessica Tierney @leafwax

As you'll see tomorrow, the report has a lot of parts. Let's break them down. The meat of the report is made up of 12 chapters and an Atlas. Each chapter has a dozen or so main authors and a list of contributing authors. Let me explain the authorship thing... 5/

Jessica Tierney @leafwax

The IPCC report doesn't have "new" data. Everything in the report is already published in the scientific literature. The report is an "assessment", which means it synthesizes what is out there and decides how well we understand what has happened/will happen 4/

Jessica Tierney @leafwax

The text in the IPCC report went through two rounds of public peer review, during which time anyone (I mean anyone!) could read the draft and submit comments. The authors have to respond to *every* comment (there are thousands). #accountability 3/

Jessica Tierney @leafwax

IPCC authors like myself do not get paid! We volunteer. It's a three year commitment and it becomes a deep part of your life. Why do we do it? Because we care about making sure the world knows about what has happened and what will happen if we don't cut emissions. 2/

Jessica Tierney @leafwax

The @IPCC_CH report will be released in the early AM tonight. I helped author it, and tomorrow I'll tweet about some of the findings re: #drought which was one of the things I worked on. In the meantime, it's worthwhile knowing a few things about the process 1/

Alaa Al Khourdajie 🇪🇺 @DrAlaaClimate

The fact that all goverments have approved the SPM line-by-line makes this document a solid starting point for future international negotiations, preventing countries from later claiming that the science is not settled on certain issues. End/

Alaa Al Khourdajie 🇪🇺 @DrAlaaClimate

This discussion with delegations from all governments ensures clear understanding of the scientific messages. The authors, when they reject a proposed change, explain why and clarify the science behind the original statement as needed. 6/

Alaa Al Khourdajie 🇪🇺 @DrAlaaClimate

A list of all changes trickled back to the relevant chapters is publicly documented. This document is always published on the same webpage alongside the said SPM. 5/

Alaa Al Khourdajie 🇪🇺 @DrAlaaClimate

Changes are *only* made if they are consistent with the underlying science that can be traced back to the Technical Summary and the underlying Chapters in the report, all of which are not subject to a line-by-line approval process. 4/

Alaa Al Khourdajie 🇪🇺 @DrAlaaClimate

If there is a disagreement, delegates will argue on the wording. Any proposed changes (e.g. to clarify a statement) by delegates undergoes an intense scrutiny by the authors on spot. Some of the changes authors respond to immediately, others require time to deliberate 3/

Alaa Al Khourdajie 🇪🇺 @DrAlaaClimate

During the approval process *each sentence* drafted by the lead authors is voted on by government delegates, and only stays in the SPM if there is a unanimous agreement on that sentence. 2/

Alaa Al Khourdajie 🇪🇺 @DrAlaaClimate

After two weeks of supporting the approval process of WGI AR6 Summary for Policy Makers SPM, I thought I’d share some thoughts. This process is there to ensure that the statements in the SPM are clear, direct & unambiguous to their audience; i.e. policymakers. 1/

Joelle Gergis @joellegergis

A nice explainer about the IPCC report that will be released on Monday. It's a colossal milestone for the climate science community who worked around the clock for 3 years during a pandemic to warn the world about the escalating climate crisis... theconversation.com/234-scientists…