Abstract The aim of the paper is to assess the impacts of climate change on various forms of wate... more Abstract The aim of the paper is to assess the impacts of climate change on various forms of water resources (surface runoff, soil moisture) and on water quality. The increasing concentration of CO2 and other trace gases in the atmosphere will probably result in a climate change. Mean temperature increase will affect potential evapotranspiration, precipitation and the quantity and quality of water resources. Although a general increase in precipitation is expected globally, a northward shift of the mean-latitude rain belt will ...
This paper studies the potential evapotranspiration and its spatial distribution for the 10 out o... more This paper studies the potential evapotranspiration and its spatial distribution for the 10 out of the 14 water districts of Greece. The estimation of potential evapotranspiration is achieved by adopting empirical approaches, such as the Thornthwaite equation, the Blaney-Criddle formula and the Hargreaves method, all having as a requirement the availability of temperature data. The data set is made up of temperature time series, obtained from 137 gauging stations operated by the Ministry of Environment, Planning and Public Works, the ...
ABSTRACT Climate change has an impact on both the quantity and quality of a river. In this paper,... more ABSTRACT Climate change has an impact on both the quantity and quality of a river. In this paper, an attempt is being made to quantify this impact with the use of a physically based rainfall runoff model and an in stream model. The warmer and drier future as indicated by the climate change scenarios is resulting, according to this study in reduced runoff and subsequently in increased BOD and NH4+ values and decreased DO values.
The aim of this paper is to assess the impacts of climate change on hydrological indicators such ... more The aim of this paper is to assess the impacts of climate change on hydrological indicators such as surface runoff, potential and actual evapotranspiration. Two study areas, one in Central and one in Northern Greece are chosen in order to estimate the hydrological effect of climate change.
The aim of this paper is to assess the impacts of climate change on water resources (surface runo... more The aim of this paper is to assess the impacts of climate change on water resources (surface runoff) and on water quality. Two GCM-based climate change scenarios are considered: transient (HadCM2) and equilibrium (UKHI). A conceptual, physically based hydrological model (WBUDG) is applied on a catchment in central Greece, simulating the effect of the two climate scenarios on average monthly runoff. A newly developed in the stream model (R-Qual) is applied in order to simulate water quality downstream of a point source under ...
The current paper examines two intense flood-producing rainstorms that occurred in October 1994 a... more The current paper examines two intense flood-producing rainstorms that occurred in October 1994 and July 1995 and which caused severe damage and loss of life in the Greater Athens Greece area. The October 1994 flood event is one of the most serious observed among ...
Regional Hydrological Impacts of Climatic Change: Impact assessment and decision making, 2005
The impacts of climate change on the water cycle of the Aliakmon River basin in Western Macedonia... more The impacts of climate change on the water cycle of the Aliakmon River basin in Western Macedonia and the operation of the Polyfito Reservoir are examined in the current study. Two climate change scenarios, the UKH1 and HadCM2, are applied to estimate the climatically induced changes in the water cycle and the altered inflows to the reservoir. A reduction of the mean monthly runoff and an increase of the potential evapotranspiration in the study area are observed under climatically changed conditions. The results show an ...
Water Resources Planning and Management: Proceedings of the International Conference on Water, Environment, Ecology, Socio-economics and Health Engineering (WEESHE): October 18-21, 1999, Seoul National University, Seoul, Korea, 1999
The aim of the paper is to assess the impacts of climate change on various forms of water resourc... more The aim of the paper is to assess the impacts of climate change on various forms of water resources (surface runoff, soil moisture) and on water quality. The increasing concentration of CO2 and other trace gases in the atmosphere will probably result in a climate change. Mean temperature increase will affect potential evapotranspiration, precipitation and the quantity and quality of water resources. Although a general increase in precipitation is expected globally, a northward shift of the mean-latitude rain belt will ...
Proc,. 8th Int. Conf. on Environmental Science and Technology, Sep 1, 2003
This paper studies the potential evapotranspiration and its spatial distribution for the 10 out o... more This paper studies the potential evapotranspiration and its spatial distribution for the 10 out of the 14 water districts of Greece. The estimation of potential evapotranspiration is achieved by adopting empirical approaches, such as the Thornthwaite equation, the Blaney-Criddle formula and the Hargreaves method, all having as a requirement the availability of temperature data. The data set is made up of temperature time series, obtained from 137 gauging stations operated by the Ministry of Environment, Planning and Public Works, the ...
Proc. European Conference on Advances in Flood Research, Nov 1, 2000
Two GCM outputs, downscaled with different methodologies are applied on a Greek catchment in orde... more Two GCM outputs, downscaled with different methodologies are applied on a Greek catchment in order to assess the impact of climate change on the monthly flow regime and the magnitude of floods. Hypothetical land cover change scenarios are developed and applied in order to assess the response of the catchment on land cover changes. The results of the study demonstrate that environmental change (climate and land use change) has a considerable impact on monthly runoff and the magnitude of floods.
This paper investigates the hydrological effects of specific land use changes in a catchment of t... more This paper investigates the hydrological effects of specific land use changes in a catchment of the river Pinios in Thessaly (Ali Efenti catchment), through the application of the Soil and Water Assessment Tool (SWAT) on a monthly time step. The model's calibration efficiency is verified by comparing the simulated and observed discharge time series at the outlet of the watershed, where long series of hydrometrical data exist. The model is used to simulate the main components of the hydrologic cycle, in order to study the effects of land ...
Abstract The aim of the paper is to assess the impacts of climate change on various forms of wate... more Abstract The aim of the paper is to assess the impacts of climate change on various forms of water resources (surface runoff, soil moisture) and on water quality. The increasing concentration of CO2 and other trace gases in the atmosphere will probably result in a climate change. Mean temperature increase will affect potential evapotranspiration, precipitation and the quantity and quality of water resources. Although a general increase in precipitation is expected globally, a northward shift of the mean-latitude rain belt will ...
This paper studies the potential evapotranspiration and its spatial distribution for the 10 out o... more This paper studies the potential evapotranspiration and its spatial distribution for the 10 out of the 14 water districts of Greece. The estimation of potential evapotranspiration is achieved by adopting empirical approaches, such as the Thornthwaite equation, the Blaney-Criddle formula and the Hargreaves method, all having as a requirement the availability of temperature data. The data set is made up of temperature time series, obtained from 137 gauging stations operated by the Ministry of Environment, Planning and Public Works, the ...
ABSTRACT Climate change has an impact on both the quantity and quality of a river. In this paper,... more ABSTRACT Climate change has an impact on both the quantity and quality of a river. In this paper, an attempt is being made to quantify this impact with the use of a physically based rainfall runoff model and an in stream model. The warmer and drier future as indicated by the climate change scenarios is resulting, according to this study in reduced runoff and subsequently in increased BOD and NH4+ values and decreased DO values.
The aim of this paper is to assess the impacts of climate change on hydrological indicators such ... more The aim of this paper is to assess the impacts of climate change on hydrological indicators such as surface runoff, potential and actual evapotranspiration. Two study areas, one in Central and one in Northern Greece are chosen in order to estimate the hydrological effect of climate change.
The aim of this paper is to assess the impacts of climate change on water resources (surface runo... more The aim of this paper is to assess the impacts of climate change on water resources (surface runoff) and on water quality. Two GCM-based climate change scenarios are considered: transient (HadCM2) and equilibrium (UKHI). A conceptual, physically based hydrological model (WBUDG) is applied on a catchment in central Greece, simulating the effect of the two climate scenarios on average monthly runoff. A newly developed in the stream model (R-Qual) is applied in order to simulate water quality downstream of a point source under ...
The current paper examines two intense flood-producing rainstorms that occurred in October 1994 a... more The current paper examines two intense flood-producing rainstorms that occurred in October 1994 and July 1995 and which caused severe damage and loss of life in the Greater Athens Greece area. The October 1994 flood event is one of the most serious observed among ...
Regional Hydrological Impacts of Climatic Change: Impact assessment and decision making, 2005
The impacts of climate change on the water cycle of the Aliakmon River basin in Western Macedonia... more The impacts of climate change on the water cycle of the Aliakmon River basin in Western Macedonia and the operation of the Polyfito Reservoir are examined in the current study. Two climate change scenarios, the UKH1 and HadCM2, are applied to estimate the climatically induced changes in the water cycle and the altered inflows to the reservoir. A reduction of the mean monthly runoff and an increase of the potential evapotranspiration in the study area are observed under climatically changed conditions. The results show an ...
Water Resources Planning and Management: Proceedings of the International Conference on Water, Environment, Ecology, Socio-economics and Health Engineering (WEESHE): October 18-21, 1999, Seoul National University, Seoul, Korea, 1999
The aim of the paper is to assess the impacts of climate change on various forms of water resourc... more The aim of the paper is to assess the impacts of climate change on various forms of water resources (surface runoff, soil moisture) and on water quality. The increasing concentration of CO2 and other trace gases in the atmosphere will probably result in a climate change. Mean temperature increase will affect potential evapotranspiration, precipitation and the quantity and quality of water resources. Although a general increase in precipitation is expected globally, a northward shift of the mean-latitude rain belt will ...
Proc,. 8th Int. Conf. on Environmental Science and Technology, Sep 1, 2003
This paper studies the potential evapotranspiration and its spatial distribution for the 10 out o... more This paper studies the potential evapotranspiration and its spatial distribution for the 10 out of the 14 water districts of Greece. The estimation of potential evapotranspiration is achieved by adopting empirical approaches, such as the Thornthwaite equation, the Blaney-Criddle formula and the Hargreaves method, all having as a requirement the availability of temperature data. The data set is made up of temperature time series, obtained from 137 gauging stations operated by the Ministry of Environment, Planning and Public Works, the ...
Proc. European Conference on Advances in Flood Research, Nov 1, 2000
Two GCM outputs, downscaled with different methodologies are applied on a Greek catchment in orde... more Two GCM outputs, downscaled with different methodologies are applied on a Greek catchment in order to assess the impact of climate change on the monthly flow regime and the magnitude of floods. Hypothetical land cover change scenarios are developed and applied in order to assess the response of the catchment on land cover changes. The results of the study demonstrate that environmental change (climate and land use change) has a considerable impact on monthly runoff and the magnitude of floods.
This paper investigates the hydrological effects of specific land use changes in a catchment of t... more This paper investigates the hydrological effects of specific land use changes in a catchment of the river Pinios in Thessaly (Ali Efenti catchment), through the application of the Soil and Water Assessment Tool (SWAT) on a monthly time step. The model's calibration efficiency is verified by comparing the simulated and observed discharge time series at the outlet of the watershed, where long series of hydrometrical data exist. The model is used to simulate the main components of the hydrologic cycle, in order to study the effects of land ...
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