气候变化领域集成服务门户(CCPortal): An ice-core proxy for Antarctic circumpolar zonal wind intensity

CCPortal

DOI	10.3189/172756405781813294
	An ice-core proxy for Antarctic circumpolar zonal wind intensity
	Yan, Yuping; Mayewski, Paul A.; Kang, Shichang; Meyerson, Eric
发表日期	2005
ISSN	0260-3055
起始页码	121
结束页码	130
卷号	41
英文摘要	Using US National Centers for Environmental Prediction/US National Center for Atmospheric Research re-analysis data, we investigate the relationships between crustal ion (nssCa(2+)) concentrations from three West Antarctic ice cores, namely, Siple Dome (SD), ITASE00-1 (IT001) and ITASE01-5 (IT015), and primary components of the climate system, namely, air pressure/geopotential height, zonal (u) and meridional (v) wind strength. Linear correlation analyses between nssCa(2+) concentrations and both air-pressure and wind fields for the period of overlap between records indicate that the SD nssCa(2+) variation is positively correlated with spring circumpolar zonal wind, while IT001 nssCa(2+) has a positive correlation with circumpolar zonal wind throughout the year (r > 0.3, p < 0.01). Intensified Southern Westerlies circulation is conducive to transport of more crustal aerosols to both sites. Further correlation analyses between nssCa(2+) concentrations from SD and IT001 and atmospheric circulation suggest that the high inland plateau (represented by core IT001) is largely influenced by transport from the upper troposphere. IT015 nssCa(2+) is negatively correlated with westerly wind in October and November, suggesting that stronger westerly circulation may weaken the transport of crustal species to IT015. Correlations of nssCa(2+) from the three ice cores with the Antarctic Oscillation index are consistent with results developed from the wind-field investigation. In addition, calibration between nssCa(2+) concentration and the multivariate El Nino-Southern Oscillation (ENSO) index shows that crustal species transport to IT001 is enhanced during strong ENSO events.
关键词	HEMISPHERE ATMOSPHERIC CIRCULATION OPERATIONAL NUMERICAL-ANALYSES SOUTHERN-HEMISPHERE EL-NINO NORTHERN-HEMISPHERE SPATIAL VARIABILITY EAST ANTARCTICA SURFACE SNOW CLIMATE GREENLAND
学科领域	Geology
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000238029800018
来源期刊	ANNALS OF GLACIOLOGY, VOL 41, 2005
来源机构	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/111446
推荐引用方式 GB/T 7714	Yan, Yuping,Mayewski, Paul A.,Kang, Shichang,et al. An ice-core proxy for Antarctic circumpolar zonal wind intensity[J]. 中国科学院青藏高原研究所,2005,41.
APA	Yan, Yuping,Mayewski, Paul A.,Kang, Shichang,&Meyerson, Eric.(2005).An ice-core proxy for Antarctic circumpolar zonal wind intensity.ANNALS OF GLACIOLOGY, VOL 41, 2005,41.
MLA	Yan, Yuping,et al."An ice-core proxy for Antarctic circumpolar zonal wind intensity".ANNALS OF GLACIOLOGY, VOL 41, 2005 41(2005).