气候变化领域集成服务门户(CCPortal): Snow accumulation rate on Qomolangma (Mount Everest), Himalaya: synchroneity with sites across the Tibetan Plateau on 50-100 year timescales

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DOI	10.3189/002214308784886126
	Snow accumulation rate on Qomolangma (Mount Everest), Himalaya: synchroneity with sites across the Tibetan Plateau on 50-100 year timescales
	Kaspar, Susan; Hooke, Roger LeB.; Mayewski, Paul Andrew; Kang, Shichang; Hou, Shugui; Qin, Dahe
发表日期	2008
ISSN	0022-1430
EISSN	1727-5652
卷号	54 期号:185
英文摘要	Annual-layer thickness data, spanning AD 1534-2001, from an ice core from East Rongbuk Coll on Qomolangma (Mount Everest, Himalaya) yield an age-depth profile that deviates systematically from a constant accumulation-rate analytical model. The profile clearly shows that the mean accumulation rate has changed every 50-100 years. A numerical model was developed to determine the magnitude of these multi-decadal-scale rates. The model was used to obtain a time series of annual accumulation. The mean annual accumulation rate decreased from similar to 0.8 m ice equivalent in the 1500s to similar to 0.3 m in the mid-1800s. From similar to 1880 to similar to 1970 the rate increased. However, it has decreased since similar to 1970. Comparison with six other records from the Himalaya and the Tibetan Plateau shows that the changes in accumulation in East Rongbuk Col are broadly consistent with a regional pattern over much of the Plateau. This suggests that there may be an overarching mechanism controlling precipitation and mass balance over this area. However, a record from Dasuopu, only 125 km northwest of Qomolangma and 700 m higher than East Rongbuk Col, shows a maximum in accumulation during the 1800s, a time during which the East Rongbuk Col and Tibetan Plateau ice-core and tree-ring records show a minimum. This asynchroneity may be due to altitudinal or seasonal differences in monsoon versus westerly moisture sources or complex mountain meteorology.
学科领域	Physical Geography; Geology
语种	英语
WOS研究方向	Geography, Physical ; Geosciences, Multidisciplinary
来源期刊	JOURNAL OF GLACIOLOGY
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/111521
作者单位	Univ Maine, Climate Change Inst, Orono, ME 04469 USA
推荐引用方式 GB/T 7714	Kaspar, Susan,Hooke, Roger LeB.,Mayewski, Paul Andrew,et al. Snow accumulation rate on Qomolangma (Mount Everest), Himalaya: synchroneity with sites across the Tibetan Plateau on 50-100 year timescales[J]. 中国科学院西北生态环境资源研究院,2008,54(185).
APA	Kaspar, Susan,Hooke, Roger LeB.,Mayewski, Paul Andrew,Kang, Shichang,Hou, Shugui,&Qin, Dahe.(2008).Snow accumulation rate on Qomolangma (Mount Everest), Himalaya: synchroneity with sites across the Tibetan Plateau on 50-100 year timescales.JOURNAL OF GLACIOLOGY,54(185).
MLA	Kaspar, Susan,et al."Snow accumulation rate on Qomolangma (Mount Everest), Himalaya: synchroneity with sites across the Tibetan Plateau on 50-100 year timescales".JOURNAL OF GLACIOLOGY 54.185(2008).