气候变化领域集成服务门户(CCPortal): The remote response of the South Asian Monsoon to reduced dust emissions and Sahara greening during the middle Holocene

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DOI	10.5194/cp-17-1243-2021
	The remote response of the South Asian Monsoon to reduced dust emissions and Sahara greening during the middle Holocene
	Pausata F.S.R.; Messori G.; Yun J.; Jalihal C.A.; Bollasina M.A.; Marchitto T.M.
发表日期	2021
ISSN	1814-9324
起始页码	1159
结束页码	1185
卷号	17 期号:3
英文摘要	Previous studies based on multiple paleoclimate archives suggested a prominent intensification of the South Asian Monsoon (SAM) during the mid-Holocene (MH, g1/46000 years before present). The main forcing that contributed to this intensification is related to changes in the Earth's orbital parameters. Nonetheless, other key factors likely played important roles, including remote changes in vegetation cover and airborne dust emission. In particular, northern Africa also experienced much wetter conditions and a more mesic landscape than today during the MH (the so-called African Humid Period), leading to a large decrease in airborne dust globally. However, most modeling studies investigating the SAM changes during the Holocene overlooked the potential impacts of the vegetation and dust emission changes that took place over northern Africa. Here, we use a set of simulations for the MH climate, in which vegetation over the Sahara and reduced dust concentrations are considered. Our results show that SAM rainfall is strongly affected by Saharan vegetation and dust concentrations, with a large increase in particular over northwestern India and a lengthening of the monsoon season. We propose that this remote influence is mediated by anomalies in Indian Ocean sea surface temperatures and may have shaped the evolution of the SAM during the termination of the African Humid Period. © Copyright:
来源期刊	Climate of the Past
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/183563
作者单位	Centre ESCER and GEOTOP, Department of Earth and Atmospheric Sciences, University of Quebec in Montreal, Montreal, Canada; Department of Earth Sciences, Uppsala University, Centre of Natural Hazards and Disaster Science (CNDS), Uppsala, Sweden; Department of Meteorology, Stockholm University, Bolin Centre for Climate Research, Stockholm, Sweden; School of GeoSciences, University of Edinburgh, Edinburgh, United Kingdom; Centre for Atmospheric and Oceanic Sciences, Indian Institute of Science, Bengaluru, India; DST-Centre of Excellence in Climate Change, Divecha Centre for Climate Change, Indian Institute of Science, Bengaluru, India; Department of Geological Sciences and Institute of Arctic and Alpine Research, University of Colorado Boulder, Boulder, CO, United States
推荐引用方式 GB/T 7714	Pausata F.S.R.,Messori G.,Yun J.,et al. The remote response of the South Asian Monsoon to reduced dust emissions and Sahara greening during the middle Holocene[J],2021,17(3).
APA	Pausata F.S.R.,Messori G.,Yun J.,Jalihal C.A.,Bollasina M.A.,&Marchitto T.M..(2021).The remote response of the South Asian Monsoon to reduced dust emissions and Sahara greening during the middle Holocene.Climate of the Past,17(3).
MLA	Pausata F.S.R.,et al."The remote response of the South Asian Monsoon to reduced dust emissions and Sahara greening during the middle Holocene".Climate of the Past 17.3(2021).