Regional Sea Level Changes for the Twentieth and the Twenty-First Centuries Induced by the Regional Variability in Greenland Ice Sheet Surface Mass Loss
| Autor: | Benoit Meyssignac, Giorgio Spada, Xavier Fettweis, R. Chevrier |
|---|---|
| Přispěvatelé: | Meyssignac, B., Fettweis, X., Chevrier, R., SPADA, GIORGIO |
| Rok vydání: | 2017 |
| Předmět: |
Atmospheric Science
010504 meteorology & atmospheric sciences Regional models Regional model Greenland ice sheet Climate change 010502 geochemistry & geophysics Climate model 01 natural sciences Climate models Model inter comparisons Sea level Indexed keywords Engineering controlled terms: Catchment Model inter comparison Effects of global warming Catchments Earth (planet) Earth atmosphere Electric power system interconnection Gas emissions Glacial geology Glaciers Greenhouse gases Ice Sea level Climate models [Author keywords Climate change Ensembles Ice loss/growth Sea level Indexed keywords Engineering controlled terms] Sea level Atmosphere ocean general circulation model Greenhouse gase Glacier Climate models [Relative sea-level changes Engineering main heading] Sea level Sea level Atmosphere ocean general circulation models 0105 earth and related environmental sciences geography Author keywords Climate change geography.geographical_feature_category Global warming Regional sea level changes Regional climate modeling Regional sea level change Relative sea-level changes Engineering main heading: Climate models Climatology Gas emission Environmental science Catchments [Sea level Indexed keywords Engineering controlled terms] Ensemble Downscaling |
| Zdroj: | Journal of Climate. 30:2011-2028 |
| ISSN: | 1520-0442 0894-8755 |
| DOI: | 10.1175/jcli-d-16-0337.1 |
| Popis: | Surface mass balance (SMB) variations of the Greenland ice sheet (GrIS) have been identified as an important contributor to contemporary and projected global mean sea level variations, but their impact on the regional sea level change pattern is still poorly known. This study proposes estimates of GrIS SMB over 1900–2100 based on the output of 32 atmosphere–ocean general circulation models and Earth system models involved in phase 5 of the Climate Model Intercomparison Project (CMIP5). It is based on a downscaling technique calibrated against the Modèle Atmosphérique Régional (MAR) regional climate model and it provides an ensemble of 32 Greenland SMB estimates for each Greenland major drainage basin. Because the GrIS SMB does not respond uniformly to greenhouse gas (GHG) emissions, the southern part of the GrIS is more sensitive to climate warming. This study shows that this part should be in imbalance in the twenty-first century sooner than the northern part. This regional variability significantly affects the associated relative sea level pattern over the entire ocean and particularly along the U.S. East Coast and the northern coast of Europe. This highlights the necessity of taking into account GrIS regional SMB changes to evaluate accurately relative sea level changes in future projections. |
| Databáze: | OpenAIRE |
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