气候变化领域集成服务门户(CCPortal): Mid-Holocene multiproxy compilation for eastern South America

CCPortal

DOI	https://doi.org/10.1594/PANGAEA.820035
	Mid-Holocene multiproxy compilation for eastern South America
	Prado; Luciana Figueiredo; Wainer; I; Chiessi; Cristiano Mazur; Ledru; Marie-Pierre; Turcq; Bruno Jean
发布日期	2013-10-06
数据集类型	dataset
英文简介	The mid-Holocene (6000 calibrated years before present) is a key period in palaeoclimatology because incoming summer insolation was lower than during the late Holocene in the Southern Hemisphere, whereas the opposite happened in the Northern Hemisphere. However, the effects of the decreased austral summer insolation over South American climate have been poorly discussed by palaeodata syntheses. In addition, only a few of the regional studies have characterised the mid-Holocene climate in South America through a multiproxy approach. Here, we present a multiproxy compilation of mid-Holocene palaeoclimate data for eastern South America. We compiled 120 palaeoclimatological datasets, which were published in 84 different papers. The palaeodata analysed here suggest a water deficit scenario in the majority of eastern South America during the mid-Holocene if compared to the late Holocene, with the exception of northeastern Brazil. Low mid-Holocene austral summer insolation caused a reduced land–sea temperature contrast and hence a weakened South American monsoon system circulation. This scenario is represented by a decrease in precipitation over the South Atlantic Convergence Zone area, saltier conditions along the South American continental margin, and lower lake levels.
语种	英语
国家	国际
学科大类	气候变化
学科子类	气候变化
文献类型	数据集
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/234506
推荐引用方式 GB/T 7714	Prado,Luciana Figueiredo,Wainer,et al. Mid-Holocene multiproxy compilation for eastern South America.2013-10-06.https://doi.org/10.1594/PANGAEA.820035.