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In this video I answer the question: 'isn't climate change supposed to have risen sea levels by now?' by looking at one dataset in some detail, and reviewing the scientific literature. Also: Kevin Costner's Waterworld.
My video on stopping climate change: [ Ссылка ]
This video was light on the potential impacts of sea level rise. I wanted to focus specifically on the perception that sea levels have not changed, and spend time on the data. If you’re interested in the potential impacts then [ Ссылка ] is a must read.
Anthropogenic climate change (AGW) is a fickle bit of science, and like much of environmental science sometimes changes on (relatively) long timescales and global extent can hide in plain sight. That seems to be the case with sea level rise. The data is very clear: sea levels have been rising faster and faster over the past century, and this is not caused by natural variability. Humanity's carbon emissions are radiatively forcing the planet, causing net warming and so thermal expansion of the oceans and melting of ice sheets. It appears that this is going to become more and more painfully obvious as this century wears on, and so the sooner we take action the better.
REFERENCES/FOOTNOTES
(1) Church and White (2011) [ Ссылка ]
(2) This figure from [ Ссылка ], created by Robert Rohde based on data from Fleming et al. 1998, Fleming 2000, and Milne et al. 2005
(3) There are many excellent resources online about Milankovitch cycles. In this instance, the wiki is a good introduction: [ Ссылка ]
(4) Gross scale annual reconstruction of Greenland temperatures using data from Buizert et al (2018) [ Ссылка ]. The enormous anomalous warming circa 15kya is the Bølling-Allerød interstadial, likely caused by changes in the AMOC [ Ссылка ]
(5) This figure taken from [ Ссылка ]
(6) This rate calculated based on the year to year (backward step) finite difference gradient of annual average data from (1), averaged over 30 years.
(7) See [ Ссылка ]. 100*(~1/1370) is less than 0.1%)
(8) Current data [ Ссылка ]. Yes, of course, this rise is caused by humans: [ Ссылка ]
(9) [ Ссылка ]
(10) IPCC AR5 WG1 chapter 13 [ Ссылка ]
(11) Though sometimes the timeframe of long term predictions is unclear, e.g. [ Ссылка ], leading to hyperbolic interpretations.
(12) This figure taken from [ Ссылка ], which is a recommended read.
(13) [ Ссылка ]
(14) [ Ссылка ]
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Shouldn't sea levels have risen by now?
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