Shouldn't sea levels have risen by now?

Een docu van Simon Clark

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:

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 https://weerhuisje.eup/df/ar5_wgII_spm_en.pdf 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.


  • (1) Church and White (2011) KLIK
  • (2) This figure from KLIK, 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: KLIK
  • (4) Gross scale annual reconstruction of Greenland temperatures using data from Buizert et al (2018) KLIK The enormous anomalous warming circa 15kya is the Bølling-Allerød interstadial, likely caused by changes in the AMOC KLIK
  • (5) This figure taken from KLIK
  • (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 KLIK
  • (8) Current data KLIK
  • (9) KLIK
  • (10) IPCC AR5 WG1 chapter 13 KLIK
  • (11) Though sometimes the timeframe of long term predictions is unclear, e.g. KLIK, leading to hyperbolic interpretations.
  • (12) This figure taken from KLIK, which is a recommended read.
  • (13) KLIK
  • (14) KLIK

Onze 1e website om onze weerdata en gevens te presenteren, online sinds 2012. Tegenwoordig ziet u op deze website de weergegevens van weerdiensten zoals Weeronline en Buienrader.


Onze 2e website om onze weerdata en gevens te presenteren, online sinds 2012. Hier presenteren wij puur onze eigen gegevens en de weersverwachting.

KLIK voor de mirror KLIK

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