Generally, lower precipitation levels correlate with higher d18O values of the precipitation (amount effect); at the same time, higher temperatures (usually associated with lower precipitation levels) also lead to d18O enrichment of soil water; acting together, these factors cause d18O enrichment of source water.

Grid of 15.0 deg N and 22.5 deg N and 100 deg E and 105 deg E

d18O (TR12SAMU00): interpretation3_scope: '' has been replaced by 'isotope'
d18O (TR12SAMU00): interpretation4_scope: '' has been replaced by 'isotope'

Column 'addR3TH4Gi1aTkohfADD', with variable name 'yearEnsemble', was added to the dataset

Sano, M., Xu, C. and Nakatsuka, T.: A 300-year Vietnam hydroclimate and ENSO variability record reconstructed from tree ringδ18O, Journal of Geophysical Research: Atmospheres, 117(D12), n/a–n/a, doi:10.1029/2012jd017749, 2012.

tree-ring cellulose d18O record representing 5 Mimosa acantholoba trees

Composite tree-ring d18O record representing up to 5 trees (Mimosa acantholoba) in any given year; mean inter-tree correlation = 0.83 (p < 0.01).

d18O (WEB1c82ec4b): interpretation3_scope: '' has been replaced by 'isotope'
d18O (WEB1c82ec4b): interpretation4_scope: '' has been replaced by 'isotope'

Column 'addRn2gJnr6g55u4Nx7C', with variable name 'yearEnsemble', was added to the dataset

Oxygen isotopes in tree rings record variation in precipitation δ18O and amount effects in the south of Mexico

Journal of Geophysical Research: Biogeosciences

Brienen, R. J. W., Hietz, P., Wanek, W. and Gloor, M.: Oxygen isotopes in tree rings record variation in precipitationδ18O and amount effects in the south of Mexico, Journal of Geophysical Research: Biogeosciences, 118(4), 1604–1615, doi:10.1002/2013jg002304, 2013.

plant waters determined by fog and precipitaiton isotope composition, which is influenced by synoptic conditions. strong correlation with 500 mb pressure anomalies with middle-wood d18O

plant water isotope composition determined by fog (July, positive correlation) and precipitaiton (Aug-Sep, negative correlation).