An 800 kyr planktonic <i>δ</i><sup>18</sup>O stack for the Western Pacific Warm Pool
<p>The Western Pacific Warm Pool (WPWP) exhibits different glacial–interglacial climate variability compared to high latitudes, and its sea surface temperatures are thought to respond primarily to changes in greenhouse forcing. To better characterize the orbital-scale climate response covering...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2024-01-01
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| Series: | Earth System Science Data |
| Online Access: | https://essd.copernicus.org/articles/16/701/2024/essd-16-701-2024.pdf |
| _version_ | 1827368788970962944 |
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| author | C. L. Bowman D. S. Rand L. E. Lisiecki S. C. Bova |
| author_facet | C. L. Bowman D. S. Rand L. E. Lisiecki S. C. Bova |
| author_sort | C. L. Bowman |
| collection | DOAJ |
| description | <p>The Western Pacific Warm Pool (WPWP) exhibits different glacial–interglacial climate variability compared to high latitudes, and its sea surface temperatures are thought to respond primarily to changes in greenhouse forcing. To better characterize the orbital-scale climate response covering the WPWP, we constructed a planktonic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O stack (average) of 10 previously published WPWP records of the last 800 kyr, available at <a href="https://doi.org/10.5281/zenodo.10211900">https://doi.org/10.5281/zenodo.10211900</a> (Bowman et al., 2023), using the new Bayesian alignment and stacking software BIGMACS (Lee et al., 2023b). Similarities in stack uncertainty between the WPWP planktonic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O stack and benthic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O stacks, also constructed using BIGMACS, demonstrate that the software performs similarly well when aligning regional planktonic or benthic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O data. A total of 65 radiocarbon dates from the upper portion of five of the WPWP cores suggest that WPWP planktonic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O change is nearly synchronous with global benthic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O during the last glacial termination. However, the WPWP planktonic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O stack exhibits a smaller glacial–interglacial amplitude and less spectral power at all orbital frequencies than benthic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O. We assert that the WPWP planktonic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O stack provides a useful representation of orbital-scale regional climate response and a valuable regional alignment target, particularly over the 0 to 450 ka portion of the stack.</p> |
| first_indexed | 2024-03-08T09:35:47Z |
| format | Article |
| id | doaj.art-5f7bf1c80257470eae81a29ad53442c3 |
| institution | Directory Open Access Journal |
| issn | 1866-3508 1866-3516 |
| language | English |
| last_indexed | 2024-03-08T09:35:47Z |
| publishDate | 2024-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Earth System Science Data |
| spelling | doaj.art-5f7bf1c80257470eae81a29ad53442c32024-01-30T08:41:15ZengCopernicus PublicationsEarth System Science Data1866-35081866-35162024-01-011670171310.5194/essd-16-701-2024An 800 kyr planktonic <i>δ</i><sup>18</sup>O stack for the Western Pacific Warm PoolC. L. Bowman0D. S. Rand1L. E. Lisiecki2S. C. Bova3Department of Earth Science, University of California Santa Barbara, Santa Barbara, CA 93106, USADepartment of Earth Science, University of California Santa Barbara, Santa Barbara, CA 93106, USADepartment of Earth Science, University of California Santa Barbara, Santa Barbara, CA 93106, USADepartment of Earth and Environmental Sciences, San Diego State University, San Diego, CA 92182, USA<p>The Western Pacific Warm Pool (WPWP) exhibits different glacial–interglacial climate variability compared to high latitudes, and its sea surface temperatures are thought to respond primarily to changes in greenhouse forcing. To better characterize the orbital-scale climate response covering the WPWP, we constructed a planktonic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O stack (average) of 10 previously published WPWP records of the last 800 kyr, available at <a href="https://doi.org/10.5281/zenodo.10211900">https://doi.org/10.5281/zenodo.10211900</a> (Bowman et al., 2023), using the new Bayesian alignment and stacking software BIGMACS (Lee et al., 2023b). Similarities in stack uncertainty between the WPWP planktonic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O stack and benthic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O stacks, also constructed using BIGMACS, demonstrate that the software performs similarly well when aligning regional planktonic or benthic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O data. A total of 65 radiocarbon dates from the upper portion of five of the WPWP cores suggest that WPWP planktonic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O change is nearly synchronous with global benthic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O during the last glacial termination. However, the WPWP planktonic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O stack exhibits a smaller glacial–interglacial amplitude and less spectral power at all orbital frequencies than benthic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O. We assert that the WPWP planktonic <span class="inline-formula"><i>δ</i><sup>18</sup></span>O stack provides a useful representation of orbital-scale regional climate response and a valuable regional alignment target, particularly over the 0 to 450 ka portion of the stack.</p>https://essd.copernicus.org/articles/16/701/2024/essd-16-701-2024.pdf |
| spellingShingle | C. L. Bowman D. S. Rand L. E. Lisiecki S. C. Bova An 800 kyr planktonic <i>δ</i><sup>18</sup>O stack for the Western Pacific Warm Pool Earth System Science Data |
| title | An 800 kyr planktonic <i>δ</i><sup>18</sup>O stack for the Western Pacific Warm Pool |
| title_full | An 800 kyr planktonic <i>δ</i><sup>18</sup>O stack for the Western Pacific Warm Pool |
| title_fullStr | An 800 kyr planktonic <i>δ</i><sup>18</sup>O stack for the Western Pacific Warm Pool |
| title_full_unstemmed | An 800 kyr planktonic <i>δ</i><sup>18</sup>O stack for the Western Pacific Warm Pool |
| title_short | An 800 kyr planktonic <i>δ</i><sup>18</sup>O stack for the Western Pacific Warm Pool |
| title_sort | 800 thinsp kyr planktonic i δ i sup 18 sup o stack for the western pacific warm pool |
| url | https://essd.copernicus.org/articles/16/701/2024/essd-16-701-2024.pdf |
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