QQ客服 官方微博 反馈留言

	Precipitation measurement intercomparison in the Qilian Mountains, north-eastern Tibetan Plateau
	Chen, R.; Liu, J.; Kang, E.; Yang, Y.; Han, C.; Liu, Z.; Song, Y.; Qing, W.; Zhu, P.
刊名	Cryosphere
	2015
卷号	9期号:5页码:1995-2008
ISSN号	1994-0416
DOI	10.5194/tc-9-1995-2015
通讯作者	Chen, R.(crs2008@lzb.ac.cn)
英文摘要	An experimental field study of wind-induced bias in precipitation measurements was conducted from September 2010 to April 2015 at a grassland site (99 degrees 52.90' E, 38 degrees 16.1'N; 2980 m) in the Hulu watershed in the Qilian Mountains, on the north-eastern Tibetan Plateau, in China. The experiment included (1) an unshielded Chinese standard precipitation gauge (CSPG(UN); orifice diameter = 20 cm, height = 70 cm), (2) a single Alter shield around a CSPG (CSPG(SA)), (3) a CSPG in a pit (CSPG(PIT)) and (4) a Double-Fence International Reference (DFIR) with a Tretyakovshielded CSPG (CSPG(DFIR)). The catch ratio (CR) used the CSPG(DFIR) as a reference (CR = CSPG(X)/CSPG(DFIR), %; X denotes UN, SA or PIT). The results show that the CSPG(SA), CSPG(PIT) and CSPG(DIFR) caught 0.9, 4.5 and 3.4% more rainfall; 7.7, 15.6 and 14.2% more mixed precipitation (snow with rain, rain with snow); 11.1, 16.0 and 20.6% more snowfall and 2.0, 6.0 and 5.3% more precipitation (of all types), respectively, than the CSPG(UN) from September 2012 to April 2015. The CSPG(PIT) and CSPG(DFIR) caught 3.6 and 2.5% more rainfall; 7.3 and 6.0% more mixed precipitation; 4.4 and 8.5% more snowfall; and 3.9 and 3.2% more total precipitation, respectively, than the CSPGSA. However, the CSPG(DFIR) caught 1.0% less rainfall; 1.2% less mixed precipitation; 3.9% more snowfall and 0.6% less total precipitation than the CSPG(PIT). From most to least precipitation measured, the instruments ranked as follows: for rain and mixed precipitation, CSPG(PIT) > CSPG(DFIR) > CSPG(SA) > CSPG(UN); for snowfall, CSPG(DFIR) > CSPG(PIT) > CSPG(SA) > CSPG(UN). The CR vs. 10m wind speed for the period of precipitation indicated that with increasing wind speed from 0 to 8.0ms(-1), the CR(UN/DFIR)Z and CRSA/DFIR for rainfall decreased slightly. For mixed precipitation, the wind speed showed no significant effect on CRUN/DFIR and CRSA/DFIR below 3.5ms(-1). For snowfall, the CRUN/DFIR and CRSA/DFIR vs. wind speed showed that CR decreased with increasing wind speed. The precipitation measured by the shielded gauges increased linearly relative to that of the unshielded gauges. However, the increase in the ratio of the linear correlation should depend on specific environmental conditions. A comparison of the wind-induced bias indicates that the CSPG(PIT) could be used as a reference gauge for rain, mixed and snow precipitation events at the experimental site. As both the PIT and DFIR effectively prevented wind from influencing the catch of the precipitation gauge, the CRPIT/DFIR had no relationship with wind speed. Cubic polynomials and exponential functions were used to quantify the relationship between catch ratio and wind speed. For snow, for both event and daily scales, the CRUN/DFIR and CRSA/DFIR were significantly related to wind speed; while for rain and mixed precipitation, only the event scale showed a significant relationship.
收录类别	SCI
WOS关键词	SOLID PRECIPITATION ; CHINA ; GAUGE ; GRADIENT
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000364330700017
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2557195
专题	寒区旱区环境与工程研究所
通讯作者	Chen, R.
作者单位	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Inland River Ecohydrol, Qilian Alpine Ecol & Hydrol Res Stn, Lanzhou 730000, Peoples R China
推荐引用方式 GB/T 7714	Chen, R.,Liu, J.,Kang, E.,et al. Precipitation measurement intercomparison in the Qilian Mountains, north-eastern Tibetan Plateau[J]. Cryosphere,2015,9(5):1995-2008.
APA	Chen, R..,Liu, J..,Kang, E..,Yang, Y..,Han, C..,...&Zhu, P..(2015).Precipitation measurement intercomparison in the Qilian Mountains, north-eastern Tibetan Plateau.Cryosphere,9(5),1995-2008.
MLA	Chen, R.,et al."Precipitation measurement intercomparison in the Qilian Mountains, north-eastern Tibetan Plateau".Cryosphere 9.5(2015):1995-2008.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。