Bhattacharya, Tripti; Fastovich, David; Maupin, Christopher; Thompson, Alexandra; Feng, Ran; Zhu, Jiang; McClymont, Erin L; Bong, Hayoung; LeGrande, Allegra N; Dee, Sylvia G; Fiorella, Richard (2026): Modern coretop leaf wax hydrogen and carbon isotopes from west coast of North America [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.993439
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Published: 2026-04-14 • DOI registered: 2026-05-13
Abstract:
This dataset consists of hydrogen (δD) and carbon isotope (δ13C) measurements of long-chain leaf wax n-acids from core tops (e.g. recent sediments) off the coast of western North America, spanning a latitudinal range of 20 to 60 degrees north. The dataset also includes chain length metrics like average chain length and carbon preference index. These data were collected to evaluate the degree of correlation between modern sedimentary leaf wax hydrogen isotopes and observed precipitation isotopes in a latitudinal range of 20 to 60 degrees north along the coast of western North America. Second, the data were collected to evaluate whether leaf wax hydrogen and carbon isotopes reflect large-scale gradients in ecological and climatological variables. Samples were processed by standard methods for biomarker extraction, purification and quantification, and isotopes were measured via gas chromatograph-isotope ratio mass spectrometry. Results of this study showed that a major transition in leaf wax hydrogen isotopic composition occurs at the latitude of the east Pacific storm track.
Keyword(s):
Supplement to:
Bhattacharya, Tripti; Fastovich, David; Maupin, Christopher; Thompson, Alexandra; Feng, Ran; Zhu, Jiang; McClymont, Erin L; Bong, Hayoung; LeGrande, Allegra N; Dee, Sylvia G; Fiorella, Richard (accepted): Leaf wax hydrogen isotopes reflect storm track position over western North America. Paleoceanography and Paleoclimatology
Funding:
National Science Foundation (NSF), grant/award no. AGS-2303568: Collaborative Research: Reducing Model Uncertainty by Improving Understanding of Pacific Meridional Climate Structure during Past Warm Intervals
National Science Foundation (NSF), grant/award no. OCE-2237502: Biomarker perspectives on the sensitivity of western North American precipitation to climate change
Coverage:
Median Latitude: 40.755256 * Median Longitude: -123.600147 * South-bound Latitude: 23.110000 * West-bound Longitude: -143.150000 * North-bound Latitude: 59.183000 * East-bound Longitude: -110.190000
Date/Time Start: 1961-08-02T00:00:00 * Date/Time End: 2004-08-29T00:00:00
Minimum Elevation: -3455.0 m * Maximum Elevation: -3.0 m
Event(s):
BAP-82-096-GC * Latitude: 25.268000 * Longitude: -112.268000 * Date/Time: 1982-06-03T00:00:00 * Elevation: -480.0 m * Method/Device: Gravity corer (GC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Event label | Event | Bhattacharya, Tripti | Label used at repository for each core | ||
| 2 | Depth, top/min | Depth top | m | Bhattacharya, Tripti | In sample | |
| 3 | Depth, bottom/max | Depth bot | m | Bhattacharya, Tripti | In sample | |
| 4 | Sample repository | Sample repository | Bhattacharya, Tripti | Location where each core is presently stored/location from which each sample was requested | ||
| 5 | Sample type | Samp type | Bhattacharya, Tripti | Device used to sample each core originaly | ||
| 6 | n-Alkanoic acid C28, δD | C28 Alk Acid δD | ‰ SMOW | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 7 | n-Alkanoic acid C28, δD, analytical error | C28 Alk Acid δD analytical e | ± | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 8 | n-Alkanoic acid C30, δD | C30 Alk Acid δD | ‰ SMOW | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 9 | n-Alkanoic acid C30, δD, analytical error | C30 Alk Acid δD analytical e | ± | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 10 | n-Alkanoic acid C32, δD | C32 Alk Acid δD | ‰ SMOW | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 11 | n-Alkanoic acid C32, δD, analytical error | C32 Alk Acid δD analytical e | ± | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 12 | n-Alkanoic acid C28, δ13C | C28 Alk Acid δ13C | ‰ PDB | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 13 | n-Alkanoic acid C28, δ13C, analytical error | C28 Alk Acid δ13C analytical e | ± | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 14 | n-Alkanoic acid C30, δ13C | C30 Alk Acid δ13C | ‰ PDB | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 15 | n-Alkanoic acid C30, δ13C, analytical error | C30 Alk Acid δ13C analytical e | ± | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 16 | n-Alkanoic acid C32, δ13C | C32 Alk Acid δ13C | ‰ PDB | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 17 | n-Alkanoic acid C32, δ13C, analytical error | C32 Alk Acid δ13C analytical e | ± | Bhattacharya, Tripti | Gas chromatography - isotope ratio mass spectrometry (GC-IRMS), Thermo Fisher Scientific, DELTA V Plus | |
| 18 | Carbon Preference Index | CPI | Bhattacharya, Tripti | Gas chromatography - Flame Ionization Detection (GC-FID), Thermo Scientific, Trace 1310 | ||
| 19 | Average chain length | ACL | Bhattacharya, Tripti | Gas chromatography - Flame Ionization Detection (GC-FID), Thermo Scientific, Trace 1310 |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
443 data points