Zhang, Xiaodong; Tipple, Brett James; Zhu, Jiang; Rush, William; Shields, Christian; Novak, Joseph B; Zachos, James C: Proxy dataset of coastal California hydroclimate response to the Paleocene-Eocene Thermal Maximum [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.973033 (dataset in review)
Abstract:
The effects of anthropogenic warming on the hydroclimate of California are becoming more pronounced, with increased frequency of multi-year droughts and flooding. As a past analog for the future, the Paleocene-Eocene Thermal Maximum (PETM) is a unique natural experiment for assessing global and regional hydroclimate sensitivity to greenhouse gas warming. Globally, extensive evidence (i.e., observations, climate models with high pCO2) demonstrates hydrological intensification with significant variability from region to region (i.e., dryer or wetter, or greater frequency and/or intensity of extreme events). Testing the theoretical response of extreme global warming impacts on regional hydroclimate (e.g. along North America's western coast) in general is challenging and still limited by the lack of observations. Central California (paleolatitude ~42°N), roughly at the boundary between dry subtropical highs and mid-latitude low pressure systems, would have been particularly susceptible to shifts in atmospheric circulation and precipitation patterns/intensity. In order to constrain the regional hydroclimate response along the central California coast during the PETM, several independent proxy dataset were analyzed (i.e., clay mineralogy, grain size distribution, δ13Corg stratigraphy, and leaf wax 𝛿2Hn-alkane isotope records), which are either directly or indirectly sensitive to shifts in hydrological cycles(i.e., precipitation patterns/intensity). All sediment samples were collected from the Lodo Formation of the late Paleocene- early Eocene outcrops located in the Panoche Hill of central California (36°35'46''N/120°38'48''W).
Related to:
Zhang, Xiaodong; Tipple, Brett James; Zhu, Jiang; Rush, William D; Shields, Christian; Novak, Joseph B; Zachos, James C (2024): Response of coastal California hydroclimate to the Paleocene–Eocene Thermal Maximum. Climate of the Past, 20(7), 1615-1626, https://doi.org/10.5194/cp-20-1615-2024
Funding:
National Science Foundation (NSF), grant/award no. OCE-2103513: Accomplishment Based Renewal: Intensification of the Hydrologic Cycle during the Paleocene-Eocene Thermal Maximum
Coverage:
Latitude: 36.596100 * Longitude: -120.646700
Date/Time Start: 2021-01-15T12:00:00 * Date/Time End: 2021-01-15T12:00:00
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Size:
4 datasets
Download Data (login required; moratorium until 2026-10-13)
Datasets listed in this bundled publication
- Zhang, X; Tipple, BJ; Zhu, J et al. (in review): Carbon isotopes of outcrop samples from Panoche Hill of central California. https://doi.pangaea.de/10.1594/PANGAEA.973006
- Zhang, X; Tipple, BJ; Zhu, J et al. (in review): Clay assemblege of outcrop samples from Panoche Hill of central California. https://doi.pangaea.de/10.1594/PANGAEA.973034
- Zhang, X; Tipple, BJ; Zhu, J et al. (in review): Grain size analysis of outcrop samples from Panoche Hill of central California. https://doi.pangaea.de/10.1594/PANGAEA.973005
- Zhang, X; Tipple, BJ; Zhu, J et al. (in review): Leaf wax n-alkanes of outcrop samples from Panoche Hill of central California. https://doi.pangaea.de/10.1594/PANGAEA.973008