Simulated mass loss of the Greenland ice sheet from 1990 until 3000 expressed as sea-level contribution<\/figcaption><\/figure>\nUnabated warming and reduced emissions pathways<\/h3>\n An unequivocal distinction between the responses to the unabated warming and reduced emissions pathways arises. By the year 3000, the unabated warming pathway causes ice loss of 0.71 to 3.54 meters sea-level equivalent (SLE), while for the reduced emissions pathway the loss is only 0.16 to 0.4 meters SLE.<\/p>\n
These numbers are much larger than for the 21st century. The melting and retreat of the Greenland ice sheet occurs in all regions from the far North to the South, and it evolves gradually over time. Even though the loss can be as large as 50% of the entire ice volume, it does not develop as a sudden instability.<\/p>\n
This study demonstrates clearly that the impact of 21st-century climate change on the Greenland ice sheet extends well beyond the 21st century itself, and the most severe consequences \u2014 possibly a multi-meter contribution to sea-level rise \u2014 will likely only be seen later in the millennium.<\/p>\nComparison of the simulated thickness of the Greenland ice sheet at the beginning (a) and end (b) of one of the simulations for the unabated warming pathway (MIROC5\/RCP8.5, ice loss 1.62 meters SLE). The melting and retreat of the Greenland ice sheet occurs in all regions from the far north to the south<\/figcaption><\/figure>\nFor this study, only a single ice-sheet model (SICOPOLIS) was applied, and the results were obtained under the simplifying assumption of the constant late-21st-century climate. In the future, the ISMIP6 community will conduct simulations with more realistic future climate scenarios beyond 2100, encompassing the full range from an ongoing, extended warming to a reduction below 21st-century extremes. Other research groups will contribute results obtained with different ice-sheet models. This will provide a more complete picture of expected long-term mass loss of the Earth\u2019s ice sheets.<\/p>\n","protected":false},"excerpt":{"rendered":"
Scientists create numerous models to estimate the impact of global warming on the Greenland ice sheet up to the year 3000. As a result of global warming in the 21st century, the Greenland ice sheet may contribute several metres to sea-level rise in the centuries to come. However, effective climate change mitigation measures will greatly […]<\/p>\n","protected":false},"author":19,"featured_media":19374,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[24433,785],"tags":[689,789],"acf":[],"yoast_head":"\n
Greenland ice sheet may halve in volume by year 3000<\/title>\n \n \n \n \n \n \n \n \n \n \n \n \n\t \n\t \n\t \n \n \n \n \n \n\t \n\t \n\t \n