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| Windler, Grace; Tierney, Jessica E.; Zhu, Jiang; Poulsen, Christopher J.. |
| The Indo‐Pacific Warm Pool (IPWP) is home to the warmest sea surface temperatures in the world oceans, favoring strong tropospheric convection and heavy rainfall. The mechanisms controlling long‐term change in the region’s hydroclimate are still uncertain. Here, we present a 450,000‐year record of precipitation δD from southern Sumatra that records a consistent pattern of glacial isotopic enrichment and interglacial depletion. We synthesize existing paleo‐indicators of precipitation δD and δ18O in the IPWP and compare results with water isotope‐enabled climate simulations of the Last Glacial Maximum (LGM). The simulations show glacial isotopic enrichment over the eastern Indian Ocean extending into the southern IPWP and isotopic depletion over southeast... |
| Tipo: Text |
Palavras-chave: Leaf wax; Water isotopes; Indo‐Pacific Warm Pool; Pleistocene; Proxy‐model comparison. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00659/77060/78359.pdf |
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| Cheng, Lijing; Trenberth, Kevin E.; Fasullo, John; Boyer, Tim; Abraham, John; Zhu, Jiang. |
| Earth's energy imbalance (EEI) drives the ongoing global warming and can best be assessed across the historical record (that is, since 1960) from ocean heat content (OHC) changes. An accurate assessment of OHC is a challenge, mainly because of insufficient and irregular data coverage. We provide updated OHC estimates with the goal of minimizing associated sampling error. We performed a subsample test, in which subsets of data during the data-rich Argo era are colocated with locations of earlier ocean observations, to quantify this error. Our results provide a new OHC estimate with an unbiased mean sampling error and with variability on decadal and multidecadal time scales (signal) that can be reliably distinguished fromsampling error (noise) with... |
| Tipo: Text |
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| Ano: 2017 |
URL: https://archimer.ifremer.fr/doc/00673/78501/80763.pdf |
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