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	中纬度亚洲现代间冰期气候变化的"西风模式"讨论
其他题名	A discussion on the westerly-dominated climate model in mid-latitude Asia during the modern interglacial period
	陈发虎; 陈建徽; 黄伟
发表日期	2009
ISSN	1005-2321
卷号	16 期号:6 页码:23-32
中文摘要	中纬度亚洲地区存在主要受季风环流影响的东南部湿润地区(简称季风区)和主要受西风环流控制的内陆干旱区(包括青藏高原北部高寒干旱区,简称西风区).根据对近年来新发表的气候变化记录证据梳理总结,发现西风区在中-晚全新世气候湿润,与亚洲季风在早-中全新世强盛的格局显著不同.过去千年的西风区中世纪暖期干旱,而小冰期相对湿润,与此相对,万象洞石笋氧同位素记录则显示季风降水在中世纪暖期时整体处于高值,在小冰期处于低值段.在近百年,尤其是近50 a,西北干旱区湿度增加,而季风影响范围内的西北东部和华北等地变得更干.不仅如此,在分属西风和季风影响区的青藏高原北部和南部,年代际-百年尺度上降水变化也表现出反相位关系.据此我们提出,亚洲中部西风带控制区在现代间冰期从数千年到年代际的各个时间尺度上均存在不同于季风区的湿度(降水)变化模式,称之为现代间冰期气候变化的西风模式.
英文摘要	The mid-latitude Asian continent can be roughly divided into two distinct climatic regions: the humid eastern-southern part of Asia mainly controlled by monsoon circulation and inland arid Asia (including the cold-arid northern Tibetan Plateau) in the western part dominated by the mid-latitude westerlies. Based on the extensive review of recently published literatures, we found that a dry early Holocene, a wettest mid-Holocene, and a moderately wet late Holocene dominated in arid central Asia (ACA), while a strong summer monsoon and humid climate characterized the early Holocene, and a weakened summer monsoon and drier climate prevailed during the late Holocene. During the past millennium, ACA experienced a dry Medieval Warm Period (MWP) and a humid Little Ice Age (LIA). In contrast, it is indicated by a speleothem proxy record from Wanxiang Cave that the monsoon precipitation was generally high during the MWP and generally low during the LIA. Over the last 100 or 50 years, moisture has increased in arid NW China, while climate in monsoon-influenced semi-arid NW China and North China has become drier. In addition, anti-phase relationship in precipitation changes between the northern Tibetan Plateau (climatically controlled by westerlies) and southern Tibetan Plateau (mainly influenced by Indian monsoon circulation) exists on decadal to centennial timescale. In summary, moisture variability in ACA and northern Tibetan Plateau has showed major difference from monsoon evolution on various time-scales in the Holocene. It is thus proposed that there is a westerly-dominated climate model in mid-latitude Asia during the modern interglacial period.
关键词	中纬度亚洲全新世中世纪暖期小冰期气候变化西风模式
英文关键词	mid-latitude Asia;Holocene;MWP;LIA;climate change;westerly-dominated climate model
语种	中文
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
CSCD记录号	CSCD:3751578
来源期刊	地学前缘
来源机构	兰州大学 ; 中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/1663
推荐引用方式 GB/T 7714	陈发虎,陈建徽,黄伟. 中纬度亚洲现代间冰期气候变化的"西风模式"讨论[J]. 兰州大学, 中国科学院青藏高原研究所,2009,16(6):23-32.
APA	陈发虎,陈建徽,&黄伟.(2009).中纬度亚洲现代间冰期气候变化的"西风模式"讨论.地学前缘,16(6),23-32.
MLA	陈发虎,et al."中纬度亚洲现代间冰期气候变化的"西风模式"讨论".地学前缘 16.6(2009):23-32.