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Temperature reconstruction from tree-ring maximum latewood density of Qinghai spruce in middle Hexi Corridor, China.
- Source :
- Theoretical & Applied Climatology; Feb2012, Vol. 107 Issue 3-4, p633-643, 11p, 8 Charts, 7 Graphs, 2 Maps
- Publication Year :
- 2012
-
Abstract
- Seven different tree-ring parameters (tree-ring width, earlywood width, latewood width, maximum density, minimum density, mean earlywood density, and mean latewood density) were obtained from Qinghai spruce ( Picea crassifolia) at one chronology site in the Hexi Corridor, China. The chronologies were analyzed individually and then compared with each other. Growth-climate response analyses showed that the tree-ring width and maximum latewood density (MXD) are mainly influenced by warm season temperature variability. Based on the relationships derived from the climate response analysis, the MXD chronology was used to reconstruct the May-August maximum temperature for the period 1775-2008 A.D., and it explained the 38.1% of the total temperature variance. It shows cooling in the late 1700s to early 1800s and warming in the twentieth century. Spatial climate correlation analyses with gridded land surface data revealed that our warm season temperature reconstruction contains a strong large-scale temperature signal for north China. Comparison with regional and Northern Hemisphere reconstructions revealed similar low-frequency change to longer-term variability. Several cold years coincide with major volcanic eruptions. [ABSTRACT FROM AUTHOR]
- Subjects :
- TREE-rings
SPRUCE
CLIMATOLOGY
CHRONOLOGY
VOLCANIC eruptions
Subjects
Details
- Language :
- English
- ISSN :
- 0177798X
- Volume :
- 107
- Issue :
- 3-4
- Database :
- Complementary Index
- Journal :
- Theoretical & Applied Climatology
- Publication Type :
- Academic Journal
- Accession number :
- 71107500
- Full Text :
- https://doi.org/10.1007/s00704-011-0512-y