Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL088776 |
Orbital forcing strongly influences seasonal temperature trends during the last millennium | |
Lucie J. Lü; cke; Andrew P. Schurer; Rob Wilson; Gabriele C. Hegerl | |
2020-12-28 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | Insolation changes caused by the axial precession induce millennial trends in last millennium temperature, varying with season and latitude. A characteristic seasonal trend pattern can be detected in both insolation and modelled surface temperature response. In the extratropical Northern hemisphere the maximum insolation trend occurs around April/May, while the minimum trend occurs between July and September. The temperature trend lags behind insolation trends by around a month. Hence orbital forcing potentially affects long‐term trends in proxy data, which are often sensitive to a distinct seasonal window. We find that tree‐ring reconstructions based on early growing season dominated records show different millennial trends from those for late summer dominated proxies. The differential response is similar to that seen in pseudoproxy reconstructions when considering proxy seasonality. This suggests that orbital forcing has influenced long‐term trends in climate proxies. It is therefore vital to use seasonally homogeneous data for reconstructing multi‐centennial variability. This article is protected by copyright. All rights reserved. |
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/311426 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Lucie J. Lü,cke,Andrew P. Schurer,et al. Orbital forcing strongly influences seasonal temperature trends during the last millennium[J]. Geophysical Research Letters,2020. |
APA | Lucie J. Lü,cke,Andrew P. Schurer,Rob Wilson,&Gabriele C. Hegerl.(2020).Orbital forcing strongly influences seasonal temperature trends during the last millennium.Geophysical Research Letters. |
MLA | Lucie J. Lü,et al."Orbital forcing strongly influences seasonal temperature trends during the last millennium".Geophysical Research Letters (2020). |
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