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	Precipitation variations in Beijing during 1860-1897 AD revealed by daily weather records from the Weng Tong-He Diary
	Zhang X. Z. ; Ge Q. S. ; Fang X. Q. ; Zheng J. Y. ; Fei J.
	2013
关键词	Beijing daily weather records historical diary precipitation reconstruction past 2000 years historical documents lower reaches yellow-river rainy-season reconstruction china climate 19th-century archives
英文摘要	Daily weather records from a historical private diary provide important data for studying historical climate change. We compiled daily weather records from the Weng Tong-He Diary and counted the number of monthly precipitation days during 1860-1897 AD for Beijing; then, using the number of monthly precipitation days, we reconstructed the seasonal precipitation using regression models relating the precipitation and precipitation days. The findings show that the monthly mean number of precipitation days for 1860-1897 was greater than that for 1951-2009 by about 1 d month1 and that the summer (June to August, JJA) precipitation for 1860-1897 was 471.8 mm greater than that for 1951-2009 by about 15.5%. The JJA precipitation of 1860-1897 had not only inter-annual variations but also inter-decadal variations that were characterized by less precipitation before 1886 (about 421.9 mm) and more precipitation thereafter (about 550.7 mm). As a consequence, the JJA precipitation of 1860-1897 showed an evident positive trend with a rate of about 57.9 mm per decade. These precipitation variations were confirmed by other datasets. However, it is worth noting that our reconstruction underestimates the historical precipitation values (by about 22.5%) because of rainfall/snowfall events missed in Weng's diary and the poor ability of the regression models to capture extreme years. In the future, new methods of reconstructing precipitation with the consideration of missed rainfall/snowfall events are needed. Copyright (c) 2012 Royal Meteorological Society
出处	International Journal of Climatology
卷	33
期	3
页	568-576
收录类别	SCI
语种	英语
ISSN号	0899-8418
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/30029]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Zhang X. Z.,Ge Q. S.,Fang X. Q.,et al. Precipitation variations in Beijing during 1860-1897 AD revealed by daily weather records from the Weng Tong-He Diary. 2013.

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