标准化降水-蒸散指数对波兰过去60年干旱条件变化的评价

IF 2 4区 地球科学 Q2 GEOCHEMISTRY & GEOPHYSICS
U. Somorowska
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引用次数: 52

摘要

本文利用标准化降水蒸散发指数(SPEI)研究了1956-2015年波兰干旱条件的变化。该研究提供了对过去干旱影响地区扩张现象的新见解,以及在时空背景下干旱趋势的证据。考虑了3个月、6个月和12个月的SPEI,代表了与农业和水文相关的干旱条件。分析表明,干旱的空间程度表现出广泛的变异性。在所有三个SPEI时间尺度上,干旱面积百分比的年平均值都有所增加。这也适用于生长季节(4月至9月)受干旱影响的平均地区。SPEI值的下降趋势表明,在上述60年期间,从波兰西南部到中部地区的干旱严重程度有所增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Changes in Drought Conditions in Poland over the Past 60 Years Evaluated by the Standardized Precipitation-Evapotranspiration Index
This paper investigates the variability of drought conditions in Poland in the years 1956–2015 with the use of the Standardized Precipitation-Evapotranspiration Index (SPEI). The study provides a new insight into the phenomenon of the past expansion of the drought-affected area as well as evidence of drying trends in a spatiotemporal context. 3-month, 6-month, and 12-month SPEI were considered, representing drought conditions relevant to agriculture and hydrology. The analysis demonstrates that the spatial extent of droughts shows a broad variability. The annual mean of the percentage of the area under drought has witnessed an increase for all three SPEI timescales. This also pertains to the mean area affected by drought over the growing season (April–September). A decreasing trend in the SPEI values indicates an increase in the severity of droughts over the 60-year period in question in an area extending from the south-west to the central part of Poland.
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来源期刊
Acta Geophysica
Acta Geophysica 地学-地球化学与地球物理
CiteScore
3.90
自引率
13.00%
发文量
251
审稿时长
5.3 months
期刊介绍: Acta Geophysica is open to all kinds of manuscripts including research and review articles, short communications, comments to published papers, letters to the Editor as well as book reviews. Some of the issues are fully devoted to particular topics; we do encourage proposals for such topical issues. We accept submissions from scientists world-wide, offering high scientific and editorial standard and comprehensive treatment of the discussed topics.
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