Evapotranspiration Analysis in Central Italy: A Combined Trend and Clustering Approach

IF 4.7 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC ACS Applied Electronic Materials Pub Date : 2024-05-03 DOI:10.3390/cli12050064

F. Di Nunno, N. Diodato, Gianni Bellocchi, C. Tricarico, G. de Marinis, F. Granata

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Abstract

Climate change is increasingly influencing the water cycle, hindering the effective management of water resources in various sectors. Lazio, central Italy, exhibits a wide range of climatic conditions, stretching from the Tyrrhenian coast to the Apennines. This study assessed a crucial aspect of climate change, focusing specifically on reference evapotranspiration (ETo) and its associated hydrological variables. The seasonal Mann–Kendall (MK) test was used to assess trends in gridded data. The K-means algorithm was then applied to divide Lazio into four homogeneous regions (clusters), each characterized by distinct trends in hydrological variables. The analysis revealed statistically significant increasing trends (p ≤ 0.01) in temperature, solar radiation, and ETo, with more marked effects observed in the coastal and hilly clusters. In contrast, statistically significant decreasing trends (p ≤ 0.01) were observed for relative humidity, while no statistically significant trends (p > 0.01) were observed for precipitation. This study’s methodology, combining trend analysis and clustering, provides a comprehensive view of ETo dynamics in Lazio, aiding in pattern recognition and identifying regions with similar trends.

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意大利中部蒸散量分析：趋势与聚类相结合的方法

气候变化对水循环的影响越来越大，阻碍了各行各业对水资源的有效管理。意大利中部的拉齐奥地区气候条件差异很大，从第勒尼安海沿岸一直延伸到亚平宁山脉。本研究对气候变化的一个重要方面进行了评估，特别关注参考蒸散量（ETo）及其相关的水文变量。采用季节性曼-肯德尔（MK）检验来评估网格数据的趋势。然后采用 K-means 算法将拉齐奥分为四个同质区域（群组），每个区域的水文变量都具有不同的趋势。分析表明，温度、太阳辐射和蒸散发（ETo）在统计学上呈显著上升趋势（p ≤ 0.01），沿海和丘陵地区的影响更为明显。相比之下，相对湿度呈统计学意义上的显著下降趋势（p ≤ 0.01），而降水量则无统计学意义上的显著趋势（p > 0.01）。这项研究的方法结合了趋势分析和聚类分析，提供了拉齐奥地区蒸散发动态的全面视图，有助于模式识别和识别具有相似趋势的地区。

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来源期刊

ACS Applied Electronic Materials Multiple-

CiteScore

7.20

自引率

4.30%

发文量

567

期刊介绍： ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/Abstracted： Web of Science SCIE Scopus CAS INSPEC Portico