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Evaluation of Tree Growth Relevant Atmospheric Circulation Patterns for Geopotential Height Field Reconstructions for Asia

Journal article
Authors Andrea Seim
J. A. Schultz
C. Beck
A. Brauning
P. J. Krusic
C. Leland
O. Byambasuren
E. Liang
X. C. Wang
J. H. Jeong
Hans W. Linderholm
Published in Journal of Climate
Volume 31
Issue 11
Pages 4391-4401
ISSN 0894-8755
Publication year 2018
Published at Department of Earth Sciences
Pages 4391-4401
Language en
Keywords Asia, Atmospheric circulation, Synoptic climatology, Biosphere-atmosphere interaction, Climate, tibetan plateau, temperature variability, last millennium, north-atlantic, summer, monsoon, precipitation, himalaya, drought, europe, Meteorology & Atmospheric Sciences
Subject categories Meteorology and Atmospheric Sciences


Atmospheric circulations influence local and regional weather conditions and, thus, tree growth. To identify summer weather types relevant for tree growth, and their associated synoptic-scale circulation patterns, an atmospheric circulation tree ring index (ACTI) dataset, derived from 414 tree-ring sites across Asia spanning the period 1871-2010, was created. Modes of common variability in the ACTI dataset were compared with leading modes of observed summertime 500-hPa geopotential height. The first four ACTI modes (explaining 88% of the total variance) were associated with pressure centers over Eurasia, the tropics, and the Pacific Ocean. The high spatiotemporal resemblance between the leading circulation modes, derived from both tree rings and 500-hPa geopotential height fields, indicates a strong potential for reconstructing large-scale circulation patterns from tree rings in Asia. This would allow investigations of natural atmospheric circulation variability prior to anthropogenic climate change and provide a means to validate model simulations of climate predictions.

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