Abstract
A tree-ring δ18O chronology for the period 1828-2000 was developed from four Pinus merkusii trees, to find a reliable proxy for reconstructing precipitation in northwest Thailand. Inter-tree δ18O correlations were high during the entire period (r=0.57-0.79). The tree-ring δ18O chronology shows significant negative correlations with regional July-October precipitation during the period 1901-2000 (r=-0.62) and with July-October river flow (r=-0.54), and is in good agreement with a shorter tree-ring δ18O chronology from living Pinus kesiya in northwest Thailand. The spatial correlation analysis between tree-ring δ18O and regional July-October precipitation also support that the tree-ring δ18O of P. merkusii is a promising proxy to reconstruct precipitation in northwest Thailand. The tree-ring δ18O-based July-October reconstruction, which accounts for 37.6% of the precipitation variance, shows a close relationship with El Niño-Southern Oscillation (ENSO) during the period 1871-2000, with the exception of during the past two decades; the exception may be related to the southeastward shift of the descending limb of Walker circulation and increased frequency of central Pacific ENSO.
| Original language | English |
|---|---|
| Pages (from-to) | 433-441 |
| Number of pages | 9 |
| Journal | Journal of Hydrology |
| Volume | 529 |
| Issue number | P2 |
| DOIs | |
| Publication status | Published - 2015 Oct 1 |
| Externally published | Yes |
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Keywords
- ENSO
- Pinus merkusii
- Precipitation reconstruction
- Tree-ring cellulose oxygen isotope
ASJC Scopus subject areas
- Water Science and Technology
Cite this
A tree-ring cellulose δ18O-based July-October precipitation reconstruction since AD 1828, northwest Thailand. / Xu, Chenxi; Pumijumnong, Nathsuda; Nakatsuka, Takeshi; Sano, Masaki; Li, Zhen.
In: Journal of Hydrology, Vol. 529, No. P2, 01.10.2015, p. 433-441.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - A tree-ring cellulose δ18O-based July-October precipitation reconstruction since AD 1828, northwest Thailand
AU - Xu, Chenxi
AU - Pumijumnong, Nathsuda
AU - Nakatsuka, Takeshi
AU - Sano, Masaki
AU - Li, Zhen
PY - 2015/10/1
Y1 - 2015/10/1
N2 - A tree-ring δ18O chronology for the period 1828-2000 was developed from four Pinus merkusii trees, to find a reliable proxy for reconstructing precipitation in northwest Thailand. Inter-tree δ18O correlations were high during the entire period (r=0.57-0.79). The tree-ring δ18O chronology shows significant negative correlations with regional July-October precipitation during the period 1901-2000 (r=-0.62) and with July-October river flow (r=-0.54), and is in good agreement with a shorter tree-ring δ18O chronology from living Pinus kesiya in northwest Thailand. The spatial correlation analysis between tree-ring δ18O and regional July-October precipitation also support that the tree-ring δ18O of P. merkusii is a promising proxy to reconstruct precipitation in northwest Thailand. The tree-ring δ18O-based July-October reconstruction, which accounts for 37.6% of the precipitation variance, shows a close relationship with El Niño-Southern Oscillation (ENSO) during the period 1871-2000, with the exception of during the past two decades; the exception may be related to the southeastward shift of the descending limb of Walker circulation and increased frequency of central Pacific ENSO.
AB - A tree-ring δ18O chronology for the period 1828-2000 was developed from four Pinus merkusii trees, to find a reliable proxy for reconstructing precipitation in northwest Thailand. Inter-tree δ18O correlations were high during the entire period (r=0.57-0.79). The tree-ring δ18O chronology shows significant negative correlations with regional July-October precipitation during the period 1901-2000 (r=-0.62) and with July-October river flow (r=-0.54), and is in good agreement with a shorter tree-ring δ18O chronology from living Pinus kesiya in northwest Thailand. The spatial correlation analysis between tree-ring δ18O and regional July-October precipitation also support that the tree-ring δ18O of P. merkusii is a promising proxy to reconstruct precipitation in northwest Thailand. The tree-ring δ18O-based July-October reconstruction, which accounts for 37.6% of the precipitation variance, shows a close relationship with El Niño-Southern Oscillation (ENSO) during the period 1871-2000, with the exception of during the past two decades; the exception may be related to the southeastward shift of the descending limb of Walker circulation and increased frequency of central Pacific ENSO.
KW - ENSO
KW - Pinus merkusii
KW - Precipitation reconstruction
KW - Tree-ring cellulose oxygen isotope
UR - http://www.scopus.com/inward/record.url?scp=84940953707&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84940953707&partnerID=8YFLogxK
U2 - 10.1016/j.jhydrol.2015.02.037
DO - 10.1016/j.jhydrol.2015.02.037
M3 - Article
AN - SCOPUS:84940953707
VL - 529
SP - 433
EP - 441
JO - Journal of Hydrology
JF - Journal of Hydrology
SN - 0022-1694
IS - P2
ER -