Weak East Asian summer monsoon during the high atmospheric CO2 middle Pliocene period: Evidenced by red clay record on the Chinese Loess Plateau

IF 1.9 3区 地球科学 Q3 GEOGRAPHY, PHYSICAL Quaternary International Pub Date : 2024-04-10 DOI:10.1016/j.quaint.2024.03.007
Baiyu Wang , Jia Jia , Yijiao Fan , Qiang Wang , Qu Chen
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Abstract

The mid-Pliocene warm period (MPWP) during 3.3–3.0 Ma has been defined as a potential analog for future climate warming with atmospheric CO2 concentration higher than the modern level. However, the migration of the East Asian summer monsoon (EASM) rain belt during this period is still controversial, which hinders our understanding of the future environmental changes in China. Two periods, Pleistocene interglacials (with atmospheric CO2 ∼280 ppmv) and mid-Pliocene (with atmospheric CO2 ∼450 ppmv) were selected to study the changes of regional humidity and the EASM edge location as high CO2 forcing. The results show a relatively drier and warmer climate prevails in the area and the edge of the EASM retreated eastward. Our study supports that the edge of the EASM will eastward retreat in the future and the CLP will get drier and warmer with increasing atmospheric CO2 concentration can be expected.

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大气二氧化碳含量高的中新世时期东亚夏季季风较弱:中国黄土高原红土记录的证据
3.3-3.0Ma的中更新世温暖期(MPWP)被定义为大气二氧化碳浓度高于现代水平的未来气候变暖的潜在模拟期。然而,这一时期东亚夏季季风(EASM)雨带的迁移仍存在争议,这阻碍了我们对中国未来环境变化的理解。本文选取了更新世间冰期(大气中 CO2 ∼ 280 ppmv)和更新世中期(大气中 CO2 ∼ 450 ppmv)两个时期,研究高 CO2 胁迫下区域湿度和东亚夏季季候风边缘位置的变化。结果表明,该地区的气候相对更加干燥和温暖,EASM边缘向东退缩。研究结果表明,未来随着大气二氧化碳浓度的增加,EASM边缘将向东退缩,中电地区将变得更加干燥和温暖。
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来源期刊
Quaternary International
Quaternary International 地学-地球科学综合
CiteScore
5.60
自引率
4.50%
发文量
336
审稿时长
3 months
期刊介绍: Quaternary International is the official journal of the International Union for Quaternary Research. The objectives are to publish a high quality scientific journal under the auspices of the premier Quaternary association that reflects the interdisciplinary nature of INQUA and records recent advances in Quaternary science that appeal to a wide audience. This series will encompass all the full spectrum of the physical and natural sciences that are commonly employed in solving Quaternary problems. The policy is to publish peer refereed collected research papers from symposia, workshops and meetings sponsored by INQUA. In addition, other organizations may request publication of their collected works pertaining to the Quaternary.
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