The DOI matches its Crossref record; 155 of the 155 references it cites were found in a registry or an index.
BAYSPLINE: A New Calibration for the Alkenone Paleothermometer
Open accessAbstract
The alkenone‐based U proxy is a cornerstone of paleoclimatology, providing insight into the temperature history of the Earth's surface ocean. Although the relationship between U and sea surface temperatures (SSTs) is robust and well supported by experimental data, there remain outstanding issues regarding the seasonality of production of alkenones and the response of U at very warm and cold SSTs. Using a data set of over 1,300 core‐top U measurements, we find compelling evidence of seasonal production in the North Atlantic, North Pacific, and Mediterranean Oceans. We also find significant attenuation of the U response to SST at warm temperatures (>24°C), with the slope reduced by nearly 50% as U approaches unity. To account for these observations in a calibration, we develop a new Bayesian B‐spline regression model, BAYSPLINE, for the U paleothermometer. BAYSPLINE produces similar estimates as previous calibrations below ∼24°, but above this point it predicts larger SST changes, in accordance with the attenuation of the U response. Example applications of BAYSPLINE demonstrate that its treatment of seasonality and slope attenuation improves paleoclimatic interpretations, with important consequences for the inference of SSTs in the tropical oceans. BAYSPLINE facilitates a probabilistic approach to paleoclimate, building upon growing efforts to develop more formalized statistical frameworks for paleoceanographic reconstruction.
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Self-citationKageyama, M., Harrison, S. P., Kapsch, M.-L., Lofverstrom, M., Lora, J. M., Mikolajewicz, U., Sherriff-Tadano, S., Vadsaria, T., Abe-Ouchi, A., Bouttes, N., et al. (2021) · Climate of the Past · doi:10.5194/cp-17-1065-2021 · Cited by 325
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Metadata
- Authors
- Tierney, J. E., & Tingley, M. P.
- Venue
- Paleoceanography and Paleoclimatology
- Publisher
- American Geophysical Union (AGU)
- Published
- 2018-03
- Volume
- 33
- Issue
- 3
- Pages
- 281-301
- ISSN
- 2572-4517 (ISSN-L)
- 2572-4525
- OpenAlex
- W2792554943
- Cited by
- 284
- References
- 155
- FWCI
- 12.22
- Type
- journal article
- Language
- en
- Open access
- bronze
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