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| DOI | 10.5194/cp-20-625-2024 |
| Abrupt warming and alpine glacial retreat through the last deglaciation in Alaska interrupted by modest Northern Hemisphere cooling | |
| 发表日期 | 2024 |
| ISSN | 1814-9324 |
| EISSN | 1814-9332 |
| 起始页码 | 20 |
| 结束页码 | 3 |
| 卷号 | 20期号:3 |
| 英文摘要 | Alpine glacier-based temperature reconstructions spanning the last deglaciation provide critical constraints on local to regional climate change and have been reported from several formerly glaciated regions around the world yet remain sparse from high-northern-latitude regions. Using newly and previously 10 Be-dated moraines, we report paleo-glacier equilibrium line altitudes (ELAs) for 15 time slices spanning the Last Glacial Maximum (LGM) to the Little Ice Age (LIA) for a valley in the western Alaska Range. We translate our ELA reconstructions into a proxy for summer temperature by applying a dry adiabatic lapse rate at each reconstructed ELA relative to the outermost LIA moraine. We observe similar to 4 degrees C warming through the last deglaciation at our site that took place in two steps following initial gradual warming: similar to 1.5 degrees C abrupt warming at 16 ka, similar to 2 kyr after the onset of global CO 2 rise, and similar to 2 degrees C warming at similar to 15 ka, near the start of the Bolling. Moraine deposition and modest summer cooling during Heinrich Stadial 1 and the early Younger Dryas (YD) suggest that despite these events being expressed more strongly in wintertime, the classic blueprint of North Atlantic climate variability extends to the western Arctic region. |
| 语种 | 英语 |
| WOS研究方向 | Geology ; Meteorology & Atmospheric Sciences |
| WOS类目 | Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001190651400001 |
| 来源期刊 | CLIMATE OF THE PAST
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/296505 |
| 作者单位 | Berkeley Geochronolgy Center; State University of New York (SUNY) System; State University of New York (SUNY) Buffalo; Columbia University |
| 推荐引用方式 GB/T 7714 | . Abrupt warming and alpine glacial retreat through the last deglaciation in Alaska interrupted by modest Northern Hemisphere cooling[J],2024,20(3). |
| APA | (2024).Abrupt warming and alpine glacial retreat through the last deglaciation in Alaska interrupted by modest Northern Hemisphere cooling.CLIMATE OF THE PAST,20(3). |
| MLA | "Abrupt warming and alpine glacial retreat through the last deglaciation in Alaska interrupted by modest Northern Hemisphere cooling".CLIMATE OF THE PAST 20.3(2024). |
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