Response of the water balance in Greece to temperature and precipitation trends
Response of the water balance in Greece to temperature and precipitation trends
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DOI：
10.1007/s00704-010-0320-9
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发表时间：
2011-05
影响因子：
3.4
通讯作者：
T. Mavromatis;Dimitrios Stathis
中科院分区：
文献类型：
--
作者：
T. Mavromatis;Dimitrios Stathis
本文讨论了气象和水文变量的最新趋势，包括气温和降水（P），潜在和实际（ET）蒸散量，地表径流（RO），土壤水分补给（R）和土壤水分流失（L）。大多数水文变量都是通过Palmer算法计算的。为此目的，两个基于秩的统计检验（曼-肯德尔（MK）和变点分析（CPA）方法）和基本线性回归模型的每周降水量和温度从17站在希腊各地，在1961年至2006年。只有在冬季，除R外，其他变量均呈下降趋势，没有显示出明显的信号。春季和夏季PandLin的下降趋势被RO（和夏季的R）的减少所抵消，而不是ET的增加。在秋季，PandL的下降趋势被RO的减少和R的增加所抵消。年内各水分循环分量的变化趋势与春、夏、秋相似。具有统计显著性（95%）趋势的站点数量随季节和气象/水文变量而变化很大。
This paper deals with the most recent trends in meteorological and hydrological variables, which include air temperature and precipitation (P), potential and actual (ET) evapotranspiration, surface runoff (RO), water recharge into the soil (R) and water loss from the soil (L). Most hydrological variables were calculated via Palmer's algorithm. For this purpose, two rank-based statistical tests (the Mann–Kendall (MK) and a change-point analysis (CPA) approach) and the basic linear regression-based model were applied on the weekly precipitation and temperature from 17 stations all over Greece, during 1961–2006. Only in winter, all variables except forR, which showed no clear signal, presented downward trends. The declining trends ofPandLin spring and summer were counterbalanced by reductions in RO (andRin the case of summer) as opposed to increases in ET. In autumn, the declining tendencies ofPandLwere offset by RO reductions andRincreases. Annually, the trends in water cycle components were analogous to that of spring, summer and autumn. The number of stations with statistically significant (at 95%) trends greatly varied with season and meteorological/hydrological variable.