DOI: 10.1007/s10584-014-1096-1
Scopus记录号: 2-s2.0-84901229418
论文题名: Spatial patterns and temporal trends of daily precipitation indices in Iran
作者: Raziei T. ; Daryabari J. ; Bordi I. ; Modarres R. ; Pereira L.S.
刊名: Climatic Change
ISSN: 0165-0009
EISSN: 1573-1480
出版年: 2014
卷: 124, 期: 2018-01-02 起始页码: 239
结束页码: 253
语种: 英语
Scopus关键词: Arid regions
; Least squares approximations
; Water resources
; Annual precipitation
; Arid and semi-arid regions
; Daily precipitations
; Intense precipitation
; Least squares methods
; Precipitation events
; Precipitation indices
; Total precipitation
; Precipitation (meteorology)
; climate classification
; climate modeling
; extreme event
; historical perspective
; precipitation (climatology)
; rainfall
; spatiotemporal analysis
; Iran
英文摘要: Spatial patterns of daily precipitation indices and their temporal trends over Iran are investigated using the APHRODITE gridded daily precipitation dataset for the period 1961-2004. The performance and limitations of the gridded dataset are checked against observations at ten rain-gauge stations that are representative of different climates in Iran. Results suggest that the spatial patterns of the indices reflect the role of orography and sea neighborhoods in differentiating central-southern arid and semi-arid regions from northern and western mountainous humid areas. It is also found that western Iran is impacted by the most extreme daily precipitation events occurring in the country, though the number of rainy days has its maximum in the Caspian Sea region. The time series of precipitation indices is checked for long-term trends using the least squares method and Mann-Kendall test. The maximum daily precipitation per year shows upward trends in most of Iran, though being statistically significant only in western regions. In the same regions, upward trends are also observed in the number of wet days and in the accumulated precipitation and intensity during wet days. Conversely, the contribution of precipitation events below the 75th percentile to the annual total precipitation is decreasing with time, suggesting that extreme events are responsible for the upward trend observed in the total annual precipitation and in the other indices. This tendency towards more severe/extreme precipitation events, if confirmed by other datasets and further analyses with longer records, would require the implementation of adequate water resources management plans in western Iran aimed at mitigating the increasing risk of intense precipitation and associated flash floods and soil erosion. © 2014 Springer Science+Business Media Dordrecht. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/84952
Appears in Collections: 气候减缓与适应 气候变化事实与影响
There are no files associated with this item.
作者单位: CEER-Biosystems Engineering, Institute of Agronomy, University of Lisbon, Lisbon, Portugal; Soil Conservation and Watershed Management Research Institute SCWMRI, Tehran, Iran; Department of Geography, Azad University of Semnan, Semnan, Iran; Department of Physics, Sapienza University of Rome, Rome, Italy; INRS-ETE, 490 De La Couronne, Québec, QC, G1K 9A9, Canada
Recommended Citation:
Raziei T.,Daryabari J.,Bordi I.,et al. Spatial patterns and temporal trends of daily precipitation indices in Iran[J]. Climatic Change,2014-01-01,124(2018-01-02)