Variation in the Asian monsoon intensity and dry-wet conditions since the Little Ice Age in central China revealed by an aragonite stalagmite

doi:10.5194/cp-10-1803-2014

	Variation in the Asian monsoon intensity and dry-wet conditions since the Little Ice Age in central China revealed by an aragonite stalagmite
	Yin, J-J 16; Yuan, D-X ; Li, H-C ; Cheng, H.; Li, T-Y ; Edwards, R. L.; Lin, Y-S ; Qin, J-M ; Tang, W.; Zhao, Z-Y
刊名	CLIMATE OF THE PAST
	2014
卷号	10 期号:5 页码:1803-1816
ISSN号	1814-9324
DOI	10.5194/cp-10-1803-2014
英文摘要	This paper focuses on the climate variability in central China since AD 1300, involving: (1) a well-dated, 1.5-year resolution stalagmite delta(18O) record from Lianhua Cave, central China (2) links of the delta O-18 record with regional dry-wet conditions, monsoon intensity, and temperature over eastern China (3) correlations among drought events in the Lianhua record, solar irradiation, and ENSO (El Nino-Southern Oscillation) variation. We present a highly precise, 230Th / U-dated, 1.5-year resolution delta O-18 record of an aragonite stalagmite (LHD1) collected from Lianhua Cave in the Wuling Mountain area of central China. The comparison of the delta O-18 record with the local instrumental record and historical documents indicates that (1) the stalagmite delta O-18 record reveals variations in the summer monsoon intensity and dry-wet conditions in the Wuling Mountain area. (2) A stronger East Asian summer monsoon (EASM) enhances the tropical monsoon trough controlled by ITCZ (Intertropical Convergence Zone), which produces higher spring quarter rainfall and isotopically light monsoonal moisture in the central China. (3) The summer quarter/spring quarter rainfall ratio in central China can be a potential indicator of the EASM strength: a lower ratio corresponds to stronger EASM and higher spring rainfall. The ratio changed from < 1 to > 1 after 1950, reflecting that the summer quarter rainfall of the study area became dominant under stronger influence of the Northwestern Pacific High. Eastern China temperatures varied with the solar activity, showing higher temperatures under stronger solar irradiation, which produced stronger summer monsoons. During Maunder, Dalton and 1900 sunspot minima, more severe drought events occurred, indicating a weakening of the summer monsoon when solar activity decreased on decadal timescales. On an interannual timescale, dry conditions in the study area prevailed under El Nino conditions, which is also supported by the spectrum analysis. Hence, our record illustrates the linkage of Asian summer monsoon precipitation to solar irradiation and ENSO: wetter conditions in the study area under stronger summer monsoon during warm periods, and vice versa. During cold periods, the Walker Circulation will shift toward the central Pacific under El Nino conditions, resulting in a further weakening of Asian summer monsoons.
学科主题	地层学与地史学
WOS关键词	NORTH-ATLANTIC CLIMATE ; HIGH-RESOLUTION ; SUMMER MONSOON ; DELTA-O-18 RECORD ; DATED STALAGMITE ; LAST MILLENNIUM ; CAVE RECORDS ; DONGGE CAVE ; HOLOCENE ; PRECIPITATION
WOS研究方向	Geology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000344734800011
内容类型	期刊论文
源URL	[http://119.78.100.197/handle/2HKVOGP0/41556]
专题	中国地质科学院
作者单位	1.[Yin, J-J 2.Yuan, D-X 3.Li, H-C 4.Lin, Y-S 5.MLR, Key Lab Karst Dynam, Guilin 541004, Guangxi, Peoples R China 6.Li, T-Y 7.Southwest Univ, Sch Geog Sci, Chongqing 400715, Peoples R China 8.Qin, J-M 9.Tang, W.] CAGS, Inst Karst Geol, Guilin 541004, Guangxi, Peoples R China 10.Natl Taiwan Univ, Dept Geosci, Taipei 10617, Taiwan
推荐引用方式 GB/T 7714	Yin, J-J,Yuan, D-X,Li, H-C,et al. Variation in the Asian monsoon intensity and dry-wet conditions since the Little Ice Age in central China revealed by an aragonite stalagmite[J]. CLIMATE OF THE PAST,2014,10(5):1803-1816.
APA	Yin, J-J.,Yuan, D-X.,Li, H-C.,Cheng, H..,Li, T-Y.,...&Mii, H-S.(2014).Variation in the Asian monsoon intensity and dry-wet conditions since the Little Ice Age in central China revealed by an aragonite stalagmite.CLIMATE OF THE PAST,10(5),1803-1816.
MLA	Yin, J-J,et al."Variation in the Asian monsoon intensity and dry-wet conditions since the Little Ice Age in central China revealed by an aragonite stalagmite".CLIMATE OF THE PAST 10.5(2014):1803-1816.