报告嘉宾简介：

Enqing Huang is currently a professor at Tongji University. His research interests focus on understanding the geological evolution of the low-latitude hydrological cycle and marine carbon cycle based on marine sedimentary sequence and model simulations. He is the leading author of more than 10 papers published in Science Advances, Science Bulletin, Earth and Planetary Science Letters, Quaternary Science Reviews, etc.

摘要：

Global temperature history over the past 11,000 years provides an important context for understanding the current global warming trend caused by human activities. However, accurate reconstruction of past temperature changes is proving difficult. One reason is that biogenic temperature recorders tend to proliferate during warm seasons, causing the problem of seasonal bias. To assess past changes in temperature seasonality, we propose to use the standard derivation of foraminiferal individual-specimen oxygen isotope as a measure. In the Western Pacific warm pool, temperature seasonality shows an increasing trend from the Last Glacial Maximum to the early Holocene, followed by a decreasing trend to the late Holocene. This reconstruction is consistent with simulation results from a coupled general circulation model, suggesting a modulation of precession on tropical temperature seasonality. In contrast, temperature seasonality shows no detectable response to substantial changes in global ice volume and atmospheric CO₂ levels over the last glacial-interglacial cycle.