Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1073/pnas.2022916118 |
Summer warmth of the past six interglacials on Greenland | |
Allison A. Cluett; Elizabeth K. Thomas | |
2021-05-18 | |
发表期刊 | Proceedings of the National Academy of Science |
出版年 | 2021 |
英文摘要 | The relative warmth of mid-to-late Pleistocene interglacials on Greenland has remained unknown, leading to debates about the regional climate forcing that caused past retreat of the Greenland Ice Sheet (GrIS). We analyze the hydrogen isotopic composition of terrestrial biomarkers in Labrador Sea sediments through interglacials of the past 600,000 y to infer millennial-scale summer warmth on southern Greenland. Here, we reconstruct exceptionally warm summers in Marine Isotope Stage (MIS) 5e, concurrent with strong Northern Hemisphere summer insolation. In contrast, “superinterglacial” MIS11 demonstrated only moderate warmth, sustained throughout a prolonged interval of elevated atmospheric carbon dioxide. Strong inferred GrIS retreat during MIS11 relative to MIS5e suggests an indirect relationship between maximum summer temperature and cumulative interglacial mass loss, indicating strong GrIS sensitivity to duration of regional warmth and elevated atmospheric carbon dioxide. |
领域 | 地球科学 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/326767 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Allison A. Cluett,Elizabeth K. Thomas. Summer warmth of the past six interglacials on Greenland[J]. Proceedings of the National Academy of Science,2021. |
APA | Allison A. Cluett,&Elizabeth K. Thomas.(2021).Summer warmth of the past six interglacials on Greenland.Proceedings of the National Academy of Science. |
MLA | Allison A. Cluett,et al."Summer warmth of the past six interglacials on Greenland".Proceedings of the National Academy of Science (2021). |
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