globalchange  > 过去全球变化的重建
DOI: 10.1007/s00382-016-3426-7
Scopus记录号: 2-s2.0-84994360730
论文题名:
Synoptic-scale circulation patterns during summer derived from tree rings in mid-latitude Asia
作者: Seim A.; Schultz J.A.; Leland C.; Davi N.; Byambasuren O.; Liang E.; Wang X.; Beck C.; Linderholm H.W.; Pederson N.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2017
卷: 49, 期:2017-05-06
起始页码: 1917
结束页码: 1931
语种: 英语
英文关键词: Atmospheric circulation tree-ring index ; Mid-latitude Asia ; Objective weather-type classification ; Principal component analysis ; Synoptic-scale circulation pattern ; Tree rings
英文摘要: Understanding past and recent climate and atmospheric circulation variability is vital for regions that are affected by climate extremes. In mid-latitude Asia, however, the synoptic climatology is complex and not yet fully understood. The aim of this study was to investigate dominant synoptic-scale circulation patterns during the summer season using a multi-species tree-ring width (TRW) network comprising 78 sites from mid-latitude Asia. For each TRW chronology, we calculated an atmospheric circulation tree-ring index (ACTI), based on 1000 hPa geopotential height data, to directly link tree growth to 13 summertime weather types and their associated local climate conditions for the period 1871–1993. Using the ACTI, three groups of similarly responding tree-ring sites can be associated with distinct large-scale atmospheric circulation patterns: 1. growth of drought sensitive trees is positively affected by a cyclone over northern Russia; 2. temperature sensitive trees show positive associations to a cyclone over northwestern Russia and an anticyclone over Mongolia; 3. trees at two high elevation sites show positive relations to a zonal cyclone extending from mid-latitude Eurasia to the West Pacific. The identified synoptic-scale circulation patterns showed spatiotemporal variability in their intensity and position, causing temporally varying climate conditions in mid-latitude Asia. Our results highlight that for regions with less pronounced atmospheric action centers during summer such as the occurrence of large-scale cyclones and anticyclones, synoptic-scale circulation patterns can be extracted and linked to the Northern Hemisphere circulation system. Thus, we provide a new and solid envelope for climate studies covering the past to the future. © 2016, The Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/53105
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作者单位: Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden; Remote Sensing Research Group (RSRG), Department of Geography, University of Bonn, Bonn, Germany; Tree-ring Laboratory, Lamont-Doherty Earth Observatory, Palisades, NY, United States; Department of Environmental Science, William Paterson University, Wayne, NJ, United States; Regional Central Asia Fire Management Resource Center, National University of Mongolia, Ulaanbaatar, Mongolia; Key Laboratory of Tibetan Environment Changes and Land Surface Processes (TEL), Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; Center for Ecological Research, Northeast Forestry University, Harbin, Heilongjiang, China; Institute of Geography, University of Augsburg, Augsburg, Germany; Harvard Forest, Harvard University, Petersham, MA, United States

Recommended Citation:
Seim A.,Schultz J.A.,Leland C.,et al. Synoptic-scale circulation patterns during summer derived from tree rings in mid-latitude Asia[J]. Climate Dynamics,2017-01-01,49(2017-05-06)
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