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Hydroclimatic changes in eastern China during the Holocene based on pollen data and climate modeling
Global and Planetary Change ( IF 3.9 ) Pub Date : 2024-02-24 , DOI: 10.1016/j.gloplacha.2024.104391 Qin Li , Haibin Wu , Jun Cheng , Wenchao Zhang , Yanyan Yu , Aizhi Sun , Yunli Luo
Global and Planetary Change ( IF 3.9 ) Pub Date : 2024-02-24 , DOI: 10.1016/j.gloplacha.2024.104391 Qin Li , Haibin Wu , Jun Cheng , Wenchao Zhang , Yanyan Yu , Aizhi Sun , Yunli Luo
The Asian monsoon system represents one of the world's most dynamic interactions of the cryosphere-continent-ocean-atmosphere system. Understanding and responding to changes in monsoonal precipitation is a major component of environmental management in this region, given its profound influence on socioeconomic activity in monsoonal Asia. In particular, characterizing the spatiotemporal variability of the East Asian summer monsoon (EASM) is critical for comprehensively understanding its dynamics and future impacts. Although substantial progress has been made in reconstructing past changes in the EASM, the spatial pattern of EASM intensity in China on the orbital-scale remains controversial. This is mainly because of uncertainties in the climatic interpretation of EASM-related proxies. Here, we present a quantitative seasonal precipitation reconstruction for monsoonal China during the Holocene, using the Modern Analog Technique (MAT) based on pollen data. The results show that during the Holocene both the annual and summer precipitation in monsoonal China increased gradually and reached a peak during the early mid-Holocene, with respective values that were ∼ 170 mm and 60 mm higher than today, followed by a decrease in the late Holocene. On the regional scale, the temporal pattern of monsoon rainfall was discrepant: a decrease from the early through late Holocene in northern China, and an increase from the early through late Holocene in southern China.
更新日期：2024-02-24
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