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Spatial and temporal analysis of drought in Greece using the Standardized Precipitation Index (SPI)

机译：使用标准降水指数（SPI）对希腊的干旱进行时空分析

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摘要

In the present study the Standardised Precipitation Index (SPI) is used to detect drought events in spatial and temporal basis. Using monthly precipitation data from 23 stations well spread over Greece and for a period of 51 years, a classification of drought is performed, based on its intensity and duration. Results indicate that, mild and moderate droughts reduce from north to south and from west to east on the 3- and 6-months time scale, while for the class of severe drought, the frequencies in the southern part of Greece are higher than in the other parts of the country. Furthermore the frequency of occurrence of severe and extreme drought conditions is very low over the whole Greek territory on the 12-month running time scale. Finally SPI was compared to the "de Martonne aridity index (Ⅰ)" and a satisfactory correlation between them was found.
机译：在本研究中，使用标准降水指数（SPI）来检测时空干旱事件。利用分布在希腊各地长达51年的23个站点的月降水数据，根据干旱的强度和持续时间对干旱进行了分类。结果表明，在3个月和6个月的时间范围内，轻度和中度干旱从北向南和从西向东减少，而对于严重干旱，希腊南部的频率高于干旱。该国其他地区。此外，在整个12个月的运行时间范围内，在整个希腊领土上，严重和极端干旱条件的发生频率非常低。最后，将SPI与“ de Martonne干旱指数（Ⅰ）”进行比较，发现它们之间具有令人满意的相关性。

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