Intra-annual variation in the stable oxygen and carbon and trace element composition of sclerosponges

Sr/Ca (RYiV0il9NAZ): interpretation1_scope: '' has been replaced by 'isotope'
Sr/Ca (RYiV0il9NAZ): interpretation2_scope: '' has been replaced by 'isotope'
Sr/Ca (RYiV0il9NAZ): interpretation3_scope: '' has been replaced by 'isotope'
d18O (SS05ROTN02A): interpretation4_scope: '' has been replaced by 'isotope'

; archiveType changed - was originally Tree ring cellulose (TR)

Needs isotopeInterpretation1_direction (GF), chronology uncertainty type is missing

OCh-S: added; SM: Isotope interpretation direction shoule be positive

The range of the observed 18O cyclicity, 3a€“5a€°, is approximately equal to the annual range of observed rainfall d18O values (IAEA/WMO, 2003) for stations from Honduras, Costa Rica and Panama.

Sub-annual cyclic isotopic signatures of several permil represent the annual cycle of local rainfall and relative humidity. Additional data from a plantation tree of known age from ENSO-sensitive northwestern coastal Peru suggests that the 1997–8 ENSO warm phase event was recorded as an 8‰ anomaly in the δ18O of α-cellulose.

d18O (TR04EVLI01): interpretation3_scope: '' has been replaced by 'isotope'
d18O (TR04EVLI01): interpretation4_scope: '' has been replaced by 'isotope'

Column 'addRtZMGP2c50JKNEyss', with variable name 'yearEnsemble', was added to the dataset

Evans, M. N. and Schrag, D. P.: A stable isotope-based approach to tropical dendroclimatology, Geochimica et Cosmochimica Acta, 68(16), 3295–3305, doi:10.1016/j.gca.2004.01.006, 2004.

The negative relationship between precipitation totoals and tree-ring d18O is strengthened through complex effects of varying humidity on plant physiology. Simplified, moist atmospheric conditions will reduce transpiration and therefore reduce 18O water enrichment in needles.

Oct (previous year) to Sept (current year)

Winter precipitation at this high altitude (2900m and > 3700m) sites fall as snow (contribute >80% to annual total).