Sea level rise is caused by two factors: with rising temperatures the sea water will expand, because warmer water takes up more space  and huge areas of ice on land will melt causing the ice to turn into water and flow into the sea .
These huge areas of ice, which rest on land, are called ice sheets . There are two ice sheets in the world, one in Greenland, and one in Antarctica .
In the past few decades, global warming has caused parts of ice sheets to melt and shrink . Therefore, water once stored on land now spreads out into the ocean [5,6]. The Greenland ice sheet lost an average of 278 billion tonnes of ice per year between 2006 and 2015 !
Since 2006, melting ice sheets have caused sea levels to rise 1.8 millimetres a year . This is an even bigger contribution than expansion, which caused an increase of 1.4 millimetres per year in the same time period .
What about ice in the sea? If that melts won’t sea levels get higher too? – You’ll find out in the next post!
 https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_TS_FINAL.pdf Technical Summary, IPCC AR5, Working Group 1, 2018 (TFE.2 Paragraph 2)
 https://www.ipcc.ch/sr15/chapter/glossary/ (Ice Sheets)
 https://royalsociety.org/-/media/policy/Publications/2017/27-11-2017-Climate-change-updates-report.pdf (Page 12 Paragraph 4)
 Link: https://www.ipcc.ch/site/assets/uploads/2018/02/SYR_AR5_FINAL_full.pdf (1.1.4 – Sea Level)
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