, 8 tweets, 4 min read Read on Twitter
1. The #IPCC has released another Special Report, this time on the Ocean & Cryosphere in a Changing Climate #SROCC.

Oceans (top) & mountain & polar regions (bottom) all have pretty severe impacts.

About the only benefit is for Arctic shipping & kelp!

ipcc.ch/srocc/home/
2. The report's headlines focus on RCP8.5 (red) versus RCP2.6 (blue), "reflecting the available literature".

Reality will lie somewhere in between these two extremes, but important to highlight that changes relative to the recent situation (1986-2005) are already extreme...
3. "RCP8.5 is a high GHG emission scenario in the absence of [climate] policies... Compared to the total set of RCPs, RCP8.5 corresponds to the pathway with the highest GHG emissions."

True, but RCP8.5 is an extreme baseline & many think implausible...
carbonbrief.org/explainer-the-…
4. At current warming (grey band) we have as good as lost warm water corals, kelp forests will go at about 2°C warming (except those in the Arctic), & risks increase as we pass 1.5°C, then 2°C, etc.

A now classic #IPCC figure showing that risks increase with temperatures...
5. But, "sandy beaches" as a category? I imagine a sea level rise & storm surge impact, that will wash the sand to a different location?

In any case, alert the Australian PM about this @ScottMorrisonMP, as this should be a no-brainer to get Australia to act.
6. Sea level rise "historical centennial events (HCEs)" used to happen once a century, but in many locations (dots) will become once a year event.
7. Sea levels will continue to rise from thermal expansion, & increasingly, glacier & ice sheet loss. It will be necessary to adapt or relocate (retreat) to "respond" to sea level rise (interesting change of language to use respond, but seems a weak phrasing to me)
8. I have not yet read all the (relevant for me) details, but I will certainly start with the @CarbonBrief summary as that is written in a language a normal scientist can understand!
carbonbrief.org/in-depth-qa-th…

/END
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