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DOI | 10.1002/joc.5081 |
Characterization of the Medieval Climate Anomaly, Little Ice Age and recent warming in northern Lapland | |
Luoto, Tomi P.1; Kivila, E. Henriikka1; Rantala, Marttiina V.2; Nevalainen, Liisa1 | |
2017-08-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2017 |
卷号 | 37 |
文章类型 | Article |
语种 | 英语 |
国家 | Finland |
英文摘要 | The major climate events of the Common Era (CE) have global imprints but significant variations in their timing and magnitude have been suggested. For reliable assessments of the past climate patterns and their applications for evaluations of the ongoing changes, spatially comprehensive network of high-fidelity paleorecords are necessary. In this study, we reconstruct summer air temperatures of the past 2000 years from northern Lapland (Utsjoki, Finland). We use fossil Chironomidae (Diptera) assemblages from sediments of a remote subarctic lake (Loazzejavri) and the transfer function approach for quantitative temperature reconstruction. The results indicate that the Chironomidae fauna were responding to air temperature and the core assemblages had good modern analogues in the calibration set allowing reliable paleoclimate reconstruction. In our reconstruction, a warm period between similar to 900 and 1300 CE is synchronous with the globally defined extent of the Medieval Climate Anomaly (MCA), though beginning considerably later than previously reconstructed for eastern Scandinavia. The MCA was also relatively mild, as the temperatures were only 0.5 degrees C higher than the record average. Similar to eastern Scandinavia, a cold period corresponding to the Little Ice Age (LIA) was longer that typically observed in hemispheric reconstructions beginning already at similar to 1400 CE and lasting very close to modern times. We also found confirming evidence that the LIA was interrupted by a short-lived warmer period dividing it into two separate cold events in the region. Based on our results, the present is warmer than during any time of the MCA displaying how rapid and severe the ongoing climate change is. |
英文关键词 | Chironomidae Fennoscandia late Holocene paleoclimate paleolimnology temperature reconstruction |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000417298600085 |
WOS关键词 | CHIRONOMIDAE INSECTA DIPTERA ; ORGANIC-CARBON ; LATITUDINAL GRADIENT ; ATLANTIC OSCILLATION ; SUMMER TEMPERATURE ; FOSSIL MIDGES ; TREE-GROWTH ; RING-WIDTH ; LAKE ; FINLAND |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/36760 |
专题 | 气候变化 |
作者单位 | 1.Univ Jyvaskyla, Dept Biol & Environm Sci, Jyvaskyla, Finland; 2.Univ Helsinki, Dept Geosci & Geog, POB 64, FIN-00014 Helsinki, Finland |
推荐引用方式 GB/T 7714 | Luoto, Tomi P.,Kivila, E. Henriikka,Rantala, Marttiina V.,et al. Characterization of the Medieval Climate Anomaly, Little Ice Age and recent warming in northern Lapland[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2017,37. |
APA | Luoto, Tomi P.,Kivila, E. Henriikka,Rantala, Marttiina V.,&Nevalainen, Liisa.(2017).Characterization of the Medieval Climate Anomaly, Little Ice Age and recent warming in northern Lapland.INTERNATIONAL JOURNAL OF CLIMATOLOGY,37. |
MLA | Luoto, Tomi P.,et al."Characterization of the Medieval Climate Anomaly, Little Ice Age and recent warming in northern Lapland".INTERNATIONAL JOURNAL OF CLIMATOLOGY 37(2017). |
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