Tree ring cellulose δ18O of Fokienia hodginsii in northern Laos

A promising proxy to reconstruct ENSO?

Chenxi Xu, Masaki Sano, Takeshi Nakatsuka

Research output: Contribution to journalArticle

58 Citations (Scopus)

Abstract

A tree ring cellulose δ18O chronology of Fokienia hodginsii from 1951 to 2002 is established by four cores from four different trees to explore its potential for reconstructing climatic variations in northern Laos. This chronology is the first tree ring δ18O chronology from Laos as well as the first for this species. We compare variations of tree ring cellulose δ18O and ring width between cores. The results suggest that the δ18O time series are more strongly correlated between different trees than ring width time series are. In addition, correlation analysis shows a significantly negative correlation between tree ring cellulose δ18O and the May-October Palmer Drought Severity Index (PDSI), while the tree ring width indices have a poor correlation with PDSI. The spatial correlation analysis between tree ring cellulose δ18O and global sea surface temperature and the time series correlation analysis between tree ring cellulose δ18O and the Multivariate El Niño-Southern Oscillation (ENSO) Index (MEI) during the investigated period (1951-2002) reveal that ENSO has an important effect on tree ring cellulose δ18O in Laos. Our results indicate that the tree ring cellulose δ18O of Fokienia hodginsii is a promising proxy to reconstruct PDSI in Southeast Asian countries, such as Laos, and to discuss their teleconnections with global atmospheric circulations such as ENSO.

Original languageEnglish
Article numberD24109
JournalJournal of Geophysical Research Atmospheres
Volume116
Issue number24
DOIs
Publication statusPublished - 2011
Externally publishedYes

Fingerprint

Fokienia
Laos
Southern Oscillation
growth rings
tree ring
cellulose
Cellulose
oscillation
rings
Drought
Time series
drought
chronology
time series analysis
time series
atmospheric circulation
teleconnection
sea surface temperature
surface temperature

ASJC Scopus subject areas

  • Geophysics
  • Oceanography
  • Forestry
  • Ecology
  • Aquatic Science
  • Water Science and Technology
  • Soil Science
  • Geochemistry and Petrology
  • Earth-Surface Processes
  • Atmospheric Science
  • Earth and Planetary Sciences (miscellaneous)
  • Space and Planetary Science
  • Palaeontology

Cite this

Tree ring cellulose δ18O of Fokienia hodginsii in northern Laos : A promising proxy to reconstruct ENSO? / Xu, Chenxi; Sano, Masaki; Nakatsuka, Takeshi.

In: Journal of Geophysical Research Atmospheres, Vol. 116, No. 24, D24109, 2011.

Research output: Contribution to journalArticle

@article{3b3135e384fd430faa0d3a82c0de2330,
title = "Tree ring cellulose δ18O of Fokienia hodginsii in northern Laos: A promising proxy to reconstruct ENSO?",
abstract = "A tree ring cellulose δ18O chronology of Fokienia hodginsii from 1951 to 2002 is established by four cores from four different trees to explore its potential for reconstructing climatic variations in northern Laos. This chronology is the first tree ring δ18O chronology from Laos as well as the first for this species. We compare variations of tree ring cellulose δ18O and ring width between cores. The results suggest that the δ18O time series are more strongly correlated between different trees than ring width time series are. In addition, correlation analysis shows a significantly negative correlation between tree ring cellulose δ18O and the May-October Palmer Drought Severity Index (PDSI), while the tree ring width indices have a poor correlation with PDSI. The spatial correlation analysis between tree ring cellulose δ18O and global sea surface temperature and the time series correlation analysis between tree ring cellulose δ18O and the Multivariate El Ni{\~n}o-Southern Oscillation (ENSO) Index (MEI) during the investigated period (1951-2002) reveal that ENSO has an important effect on tree ring cellulose δ18O in Laos. Our results indicate that the tree ring cellulose δ18O of Fokienia hodginsii is a promising proxy to reconstruct PDSI in Southeast Asian countries, such as Laos, and to discuss their teleconnections with global atmospheric circulations such as ENSO.",
author = "Chenxi Xu and Masaki Sano and Takeshi Nakatsuka",
year = "2011",
doi = "10.1029/2011JD016694",
language = "English",
volume = "116",
journal = "Journal of Geophysical Research: Space Physics",
issn = "2169-9313",
publisher = "American Geophysical Union",
number = "24",

}

TY - JOUR

T1 - Tree ring cellulose δ18O of Fokienia hodginsii in northern Laos

T2 - A promising proxy to reconstruct ENSO?

AU - Xu, Chenxi

AU - Sano, Masaki

AU - Nakatsuka, Takeshi

PY - 2011

Y1 - 2011

N2 - A tree ring cellulose δ18O chronology of Fokienia hodginsii from 1951 to 2002 is established by four cores from four different trees to explore its potential for reconstructing climatic variations in northern Laos. This chronology is the first tree ring δ18O chronology from Laos as well as the first for this species. We compare variations of tree ring cellulose δ18O and ring width between cores. The results suggest that the δ18O time series are more strongly correlated between different trees than ring width time series are. In addition, correlation analysis shows a significantly negative correlation between tree ring cellulose δ18O and the May-October Palmer Drought Severity Index (PDSI), while the tree ring width indices have a poor correlation with PDSI. The spatial correlation analysis between tree ring cellulose δ18O and global sea surface temperature and the time series correlation analysis between tree ring cellulose δ18O and the Multivariate El Niño-Southern Oscillation (ENSO) Index (MEI) during the investigated period (1951-2002) reveal that ENSO has an important effect on tree ring cellulose δ18O in Laos. Our results indicate that the tree ring cellulose δ18O of Fokienia hodginsii is a promising proxy to reconstruct PDSI in Southeast Asian countries, such as Laos, and to discuss their teleconnections with global atmospheric circulations such as ENSO.

AB - A tree ring cellulose δ18O chronology of Fokienia hodginsii from 1951 to 2002 is established by four cores from four different trees to explore its potential for reconstructing climatic variations in northern Laos. This chronology is the first tree ring δ18O chronology from Laos as well as the first for this species. We compare variations of tree ring cellulose δ18O and ring width between cores. The results suggest that the δ18O time series are more strongly correlated between different trees than ring width time series are. In addition, correlation analysis shows a significantly negative correlation between tree ring cellulose δ18O and the May-October Palmer Drought Severity Index (PDSI), while the tree ring width indices have a poor correlation with PDSI. The spatial correlation analysis between tree ring cellulose δ18O and global sea surface temperature and the time series correlation analysis between tree ring cellulose δ18O and the Multivariate El Niño-Southern Oscillation (ENSO) Index (MEI) during the investigated period (1951-2002) reveal that ENSO has an important effect on tree ring cellulose δ18O in Laos. Our results indicate that the tree ring cellulose δ18O of Fokienia hodginsii is a promising proxy to reconstruct PDSI in Southeast Asian countries, such as Laos, and to discuss their teleconnections with global atmospheric circulations such as ENSO.

UR - http://www.scopus.com/inward/record.url?scp=84855311081&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84855311081&partnerID=8YFLogxK

U2 - 10.1029/2011JD016694

DO - 10.1029/2011JD016694

M3 - Article

VL - 116

JO - Journal of Geophysical Research: Space Physics

JF - Journal of Geophysical Research: Space Physics

SN - 2169-9313

IS - 24

M1 - D24109

ER -