Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL093868 |
Different trends in Antarctic temperature and atmospheric CO2 during the Last Glacial | |
Peisong Zheng; Joel B. Pedro; Markus Jochum; Sune O. Rasmussen; Zhongping Lai | |
2021-07-15 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | We analyze the past 67,000 years of climate using Antarctic ice-core records to constrain the mechanisms involved in 1) the ‘bipolar seesaw’ relationship between Greenland and Antarctic surface temperature variations, and 2) mechanisms of millennial-scale atmospheric CO2 concentration variations. Specifically, we determine for each Greenland Stadial the rate of Antarctic temperature and atmospheric CO2 rise. We find that Antarctic warming rates significantly decrease as the climate cools during the glacial period, whereas the rate of atmospheric CO2 rise does not significantly change. Also, we find that the rates of Antarctic warming and atmospheric CO2 rise are both insensitive to whether a given stadial contains a Heinrich event. These results challenge the view that a single Southern-Ocean-based mechanism dominates the observed glacial variability in Antarctic temperature and atmospheric CO2. Instead, our results are consistent with an important contribution of low- and mid-latitude processes to millennial-scale atmospheric CO2 changes. |
领域 | 气候变化 |
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/333998 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Peisong Zheng,Joel B. Pedro,Markus Jochum,et al. Different trends in Antarctic temperature and atmospheric CO2 during the Last Glacial[J]. Geophysical Research Letters,2021. |
APA | Peisong Zheng,Joel B. Pedro,Markus Jochum,Sune O. Rasmussen,&Zhongping Lai.(2021).Different trends in Antarctic temperature and atmospheric CO2 during the Last Glacial.Geophysical Research Letters. |
MLA | Peisong Zheng,et al."Different trends in Antarctic temperature and atmospheric CO2 during the Last Glacial".Geophysical Research Letters (2021). |
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