A TEX 86 surface sediment database and extended Bayesian calibration

Jessica E. Tierney, Martin Patrick Tingley

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

Quantitative estimates of past temperature changes are a cornerstone of paleoclimatology. For a number of marine sediment-based proxies, the accuracy and precision of past temperature reconstructions depends on a spatial calibration of modern surface sediment measurements to overlying water temperatures. Here, we present a database of 1095 surface sediment measurements of TEX 86, a temperature proxy based on the relative cyclization of marine archaeal glycerol dialkyl glycerol tetraether (GDGT) lipids. The dataset is archived in a machine-readable format with geospatial information, fractional abundances of lipids (if available), and metadata. We use this new database to update surface and subsurface temperature calibration models for TEX 86 and demonstrate the applicability of the TEX 86 proxy to past temperature prediction. The TEX 86 database confirms that surface sediment GDGT distribution has a strong relationship to temperature, which accounts for over 70% of the variance in the data. Future efforts, made possible by the data presented here, will seek to identify variables with secondary relationships to GDGT distributions, such as archaeal community composition.

Original languageEnglish (US)
Article number150029
JournalScientific Data
Volume2
DOIs
StatePublished - Jun 23 2015

Fingerprint

Sediment
Calibration
Glycerol
Sediments
Databases
Temperature
Proxy
reconstruction
water
Lipids
Geologic Sediments
Model Calibration
Cyclization
Data base
Metadata
Fractional
Update
Water
Prediction
Chemical analysis

All Science Journal Classification (ASJC) codes

  • Education
  • Library and Information Sciences
  • Computer Science Applications
  • Information Systems
  • Statistics, Probability and Uncertainty
  • Statistics and Probability
  • Medicine(all)

Cite this

Tierney, Jessica E. ; Tingley, Martin Patrick. / A TEX 86 surface sediment database and extended Bayesian calibration. In: Scientific Data. 2015 ; Vol. 2.
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A TEX 86 surface sediment database and extended Bayesian calibration. / Tierney, Jessica E.; Tingley, Martin Patrick.

In: Scientific Data, Vol. 2, 150029, 23.06.2015.

Research output: Contribution to journalArticle

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N2 - Quantitative estimates of past temperature changes are a cornerstone of paleoclimatology. For a number of marine sediment-based proxies, the accuracy and precision of past temperature reconstructions depends on a spatial calibration of modern surface sediment measurements to overlying water temperatures. Here, we present a database of 1095 surface sediment measurements of TEX 86, a temperature proxy based on the relative cyclization of marine archaeal glycerol dialkyl glycerol tetraether (GDGT) lipids. The dataset is archived in a machine-readable format with geospatial information, fractional abundances of lipids (if available), and metadata. We use this new database to update surface and subsurface temperature calibration models for TEX 86 and demonstrate the applicability of the TEX 86 proxy to past temperature prediction. The TEX 86 database confirms that surface sediment GDGT distribution has a strong relationship to temperature, which accounts for over 70% of the variance in the data. Future efforts, made possible by the data presented here, will seek to identify variables with secondary relationships to GDGT distributions, such as archaeal community composition.

AB - Quantitative estimates of past temperature changes are a cornerstone of paleoclimatology. For a number of marine sediment-based proxies, the accuracy and precision of past temperature reconstructions depends on a spatial calibration of modern surface sediment measurements to overlying water temperatures. Here, we present a database of 1095 surface sediment measurements of TEX 86, a temperature proxy based on the relative cyclization of marine archaeal glycerol dialkyl glycerol tetraether (GDGT) lipids. The dataset is archived in a machine-readable format with geospatial information, fractional abundances of lipids (if available), and metadata. We use this new database to update surface and subsurface temperature calibration models for TEX 86 and demonstrate the applicability of the TEX 86 proxy to past temperature prediction. The TEX 86 database confirms that surface sediment GDGT distribution has a strong relationship to temperature, which accounts for over 70% of the variance in the data. Future efforts, made possible by the data presented here, will seek to identify variables with secondary relationships to GDGT distributions, such as archaeal community composition.

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