| Autor: |
Zhang, Xiaodong, Tipple, Brett J., Zhu, Jiang, Rush, William D., Shields, Christian A., Novak, Joseph B., Zachos, James C. |
| Předmět: |
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| Zdroj: |
Climate of the Past; 2024, Vol. 20 Issue 7, p1615-1626, 12p |
| Abstrakt: |
The effects of anthropogenic warming on the hydroclimate of California are becoming more pronounced with the 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 and climate models with high p CO 2) demonstrates hydrological intensification with significant variability from region to region (i.e., drier or wetter, greater frequency, and/or intensity of extreme events). 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. Here, we present new observations and climate model output on regional/local hydroclimate responses in central California during the PETM. Our findings, based on multi-proxy evidence within the context of model outputs, suggest a transition to an overall drier climate punctuated by increased precipitation during summer months along central coastal California during the PETM. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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