干旱区生态环境知识资源中心(Arid): Spatial distribution and trends of different precipitation variability indices based on daily data in Northern Chile between 1966 and 2015

Arid

DOI	10.1002/joc.6089
	Spatial distribution and trends of different precipitation variability indices based on daily data in Northern Chile between 1966 and 2015
	Meseguer-Ruiz, Oliver 1; Ponce-Philimon, Paulina, I 1; Guijarro, Jose A.2; Sarricolea, Pablo 3
通讯作者	Meseguer-Ruiz, Oliver
来源期刊	INTERNATIONAL JOURNAL OF CLIMATOLOGY
ISSN	0899-8418
EISSN	1097-0088
出版年	2019
卷号	39 期号:12 页码:4595-4610
英文摘要	Northern Chile is one of the most arid regions in the world, as it includes the Atacama Desert. At high elevations, most precipitation is observed only during a short period of the year, from December until March. This renders water availability a major concern for policymakers. Accumulated rainfall varies considerably from one year to another, and for this reason, climate projections have a very low degree of confidence in this area. Consequently, in this region, it is more interesting to study the irregularity of precipitation itself than accumulated rainfall values, as they express in a clearer way the behaviour of precipitation. According to daily data from 161 meteorological stations, four irregularity indices of precipitation were calculated: concentration index, entropy, persistence index, and fractal dimension. These indices were measured according to observed values, and their spatial distribution was subsequently determined by interpolating following multivariate regression models that consider different geographical variables such as latitude, distance to the Amazon Basin, elevation, orientation, and curvature. The temporal trends of each index and for each meteorological station were also calculated, displaying different results depending on the latitude and elevation. These changes agree with the observed modifications on the inter-tropical atmospheric circulation and with changes in the precipitation diurnal cycle. These results will help improve climate projections for this region, in the process facilitating the development of more accurate climate models and informing the formulation of water management policies.
英文关键词	climate variability concentration index entropy fractal dimension northern Chile persistence
类型	Article
语种	英语
国家	Chile ; Spain
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000489003100002
WOS关键词	SPATIOTEMPORAL VARIABILITY ; FRACTAL DIMENSION ; CLIMATE-CHANGE ; SOUTH-AMERICA ; EXTREME PRECIPITATION ; BALEARIC-ISLANDS ; PENINSULAR SPAIN ; AIR-TEMPERATURE ; RAINFALL ; EUROPE
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216384
作者单位	1.Univ Tarapaca, Dept Ciencias Hist & Geog, 18 Septiembre 2222, Arica 1010069, Chile; 2.State Meteorol Agcy AEMet, Balearic Isl Off, Palma De Mallorca, Spain; 3.Univ Chile, Dept Geog, Santiago, Chile
推荐引用方式 GB/T 7714	Meseguer-Ruiz, Oliver,Ponce-Philimon, Paulina, I,Guijarro, Jose A.,et al. Spatial distribution and trends of different precipitation variability indices based on daily data in Northern Chile between 1966 and 2015[J],2019,39(12):4595-4610.
APA	Meseguer-Ruiz, Oliver,Ponce-Philimon, Paulina, I,Guijarro, Jose A.,&Sarricolea, Pablo.(2019).Spatial distribution and trends of different precipitation variability indices based on daily data in Northern Chile between 1966 and 2015.INTERNATIONAL JOURNAL OF CLIMATOLOGY,39(12),4595-4610.
MLA	Meseguer-Ruiz, Oliver,et al."Spatial distribution and trends of different precipitation variability indices based on daily data in Northern Chile between 1966 and 2015".INTERNATIONAL JOURNAL OF CLIMATOLOGY 39.12(2019):4595-4610.