[PDF] Top 20 Spatial –Temporal Analysis of Drought in Iran Using SPI During a Long - Term Period

... the drought period, magnitude, and SPI values in ...(CRU) during (1951 - 1996). They found that the frequency of drought events in Korea has significant time intervals of 2–3 and 5–8 ... See full document

... meteorological drought indices including SPI, DI, z-Score, SIAP and PNPI, which were derived from the tropical rainfall measuring mission (TRMM) data in the South of Iran during 1998–2013 ... See full document

... South Khorasan province, the Easternmost province of Iran, with 82864 km2 located in 57° 46' to 60° 57' eastern longitudes and 30° 35' to 34° 14' northern latitudes. The Province is border with Afghanistan at the ... See full document

... of drought vulnerability and occurrence zones in North Central Nigeria was carried out in this study using standardized Precipitation Index ...from long-term rainfall data between 1960 and ... See full document

... farmland. Using the classical statistics and geo-statistics methods, real-time monitoring data were analyzed with three aspects, ...i.e. temporal variation, spatial variation and ... See full document

... A drought is a natural phenomenon that has significant social, economic and environmental ...of drought due to its varying characteristics region by region. Drought can be considered as a prolonged ... See full document

... by drought during a period of 39 water years in ...near-continuous long-term records, although some data was missing (less than ...estimated using a linear correlation method ... See full document

... agricultural drought monitoring has thus attracted interest of various scientists such as agriculturalists, hydrologists, meteor- ologists, and environmentalists because it provides more accurate, flexible and ... See full document

... flect drought impacts on different types of water ...with SPI < − 1 belong to se- vere or extreme drought ...scales, SPI values remained nega- tive after the termination of a drought ... See full document

... The monitoring period was from July 2010 to July 2011, for one year, over four seasons. Overall, we took the measurements on 24 days (six days in each season and two days randomly selected in each month). We had ... See full document

... The spatial variability of precipitation and drought are investigated for Portugal using monthly precipitation from 74 stations and minimum and maximum temperature from 27 stations, covering the ... See full document

... data using non- parametric trend technique Mann Kendall (MK) to detect wet (increasing) and dry (decreasing) periods across Victoria, ...trend analysis was carried out for five different stations out of the ... See full document

... extreme drought. Severe drought cases are observed in all the rain gauge stations except ...severe drought varies from ...extreme drought periods during the study ...wet period ... See full document

... to long term average [1] and can be described on s spatial domain ...[2]. Drought has become more frequent and se- vere in arid and semi-arid lands (ASALS) than in humid ...areas. ... See full document

... by SPI time series indicated that the extreme wetness occurred at the middle reaches of the basin (Kpetoe), in 1999 at the time scales of SPI-6, SPI-9 and ...of SPI-6 for the period ... See full document

... Long-term predictions often exhibit high uncertainties. Scientists have made considerable effort to achieve greater accuracy and reliability through easily used methods and available data (Wu et al., 2011). ... See full document

... Clearly, the bare surface depreciated from 71.99% in 1987 to 62.39% in the year 2000 and later to 44.38% in 2005, which simply indicates that more exposed surfaces were covered by vegetation due to improvement in ... See full document

... for long-term prophylactic effective- ness (Bowden et ...of analysis is well suited to relatively short trials that aim at proving a single drug's efficacy, it is inappropriate for ... See full document

... same spatial and tem- poral patterns of droughts, a PCA on the SPI-12 was per- formed and followed by a K-means clustering of the PC load- ings provided by the ...cluster analysis is justified by the ... See full document

... (5) Comparisons of the extreme precipitation trend distribution (Fig. 12) showed that the flood damaged areas were relatively severe in the southern of East China, 345. and the frequen[r] ... See full document