Response of the water balance in Greece to temperature and precipitation trends

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 hydrologica...

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Bibliographic Details
Published in:Theoretical and applied climatology 2011-05, Vol.104 (1-2), p.13-24
Main Authors: Mavromatis, T., Stathis, D.
Format: Article
Language:English
Subjects:
Air temperature
Algorithms
Analysis
Aquatic Pollution
Atmospheric Protection/Air Quality Control/Air Pollution
Atmospheric Sciences
Autumn
Climate science
Climatology
Earth and Environmental Science
Earth Sciences
Earth, ocean, space
Evapotranspiration
Exact sciences and technology
External geophysics
Hydrologic cycle
Hydrology
Meteorology
Original Paper
Precipitation
Rain and rainfall
Spring
Summer
Surface runoff
Temperature
Waste Water Technology
Water
Water balance
Water balance (Hydrology)
Water loss
Water Management
Water Pollution Control
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Summary: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 for R , which showed no clear signal, presented downward trends. The declining trends of P and L in spring and summer were counterbalanced by reductions in RO (and R in the case of summer) as opposed to increases in ET. In autumn, the declining tendencies of P and L were offset by RO reductions and R increases. 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.
ISSN:0177-798X
1434-4483
DOI:10.1007/s00704-010-0320-9