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365 Days of Climate Awareness 327 – The IPCC’s AR6 predictions [1]

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Date: 2022-07-06

Thousands of scientists with many different research specialties—marine biology, ocean physics, glacial science, atmospheric sciences, to name a very few—collaborate on collating data and writing the report. Large teams collaborate on each chapter, which are then edited and set within the larger volume, itself part of the comprehensive Assessment Report. The six reports have spanned the last thirty-plus years since the IPCC’s founding in 1988: 1990-92 (AR1); 1995 (AR2); 2001 (AR3); 2007 (AR4); 2015 (AR5); 2022-23 (AR6, not yet complete). The reports have grown in length, scope, and urgency with each cycle.

The latest, AR6, states in the strongest and most unequivocal terms yet that humans are responsible for the rapid planetary warming of the past century-plus, and that large changes in the global climate regime are inevitable without large and immediate reductions in greenhouse gas emissions. Since the last glacial maximum until now, the world has warmed roughly 5°C/9°F. Some temperature rise scenarios show global increases of that within the next eighty years, with sea level rise of 0.75 m/2.5 ft, enough to impact coastal cities and homes around the world, with some in real danger of being lost.

NOAA Coastal Modeler

The combination of these factors and more: higher temperatures, winters diminishing, shoulder seasons (spring/fall) being compressed into what used to be winter; greater and more violent precipitation; dramatically warming and acidifying oceans; loss of ice around the world; in some cases amplify each other in vulnerable zones such as coasts and low-elevation areas like river basins. Eustatic (global) sea level rise will also affect river levels and their local and regional ecosystems. System response to the complicated effects of global warming will be likewise complex and far-reaching.

Tomorrow: IPCC AR6 Vulnerabilities and Impacts.

Be brave, be steadfast, and be well.

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[1] Url: https://www.dailykos.com/stories/2022/7/6/2108542/-365-Days-of-Climate-Awareness-327-The-IPCC-s-AR6-predictions

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