Presentation on theme: "Water for the Recovery of the Climate - A New Water Paradigm Michal Kravcik, Juraj Kohutiar NGO „People and Water“ Slovakia Water Tribune, Zaragoza, 23rd."— Presentation transcript:
Water for the Recovery of the Climate - A New Water Paradigm Michal Kravcik, Juraj Kohutiar NGO „People and Water“ Slovakia Water Tribune, Zaragoza, 23rd August 2008
TOPICS OF THIS PRESENTATION INTRODUCTION BODY Human impact on water cycle Water cycle and climate change Recovery of the climate CONCLUSION
“On July 22d , he [Columbus] departed for Jamaica…. every afternoon there was a rain squall that lasted for about an hour. The admiral attributes this to the great forests of that land; he knew from experience that formerly this also occurred in the Canary, Madeira, and Azore Islands, but since the removal of forests that once covered those islands they do not have so much mist and rain as before.” /Christopher Columbus’ biography by his son Ferdinand/
Precipitation (mm/ year) Volume of water circulating Runoff (indicator of soil sealing) Europe 7507 790 km336 % Slovakia 76237 km334 % Prešov, SK (City center) 62812 mil. m372 % Plot of land 6300,5 mil. m337 % Residential house 630766 m376 % WATER BALANCE OF THE INVESTIGATED TERRITORY
RUNOFF FROM URBAN AND FOREST ENVIRONMENTS Decrease of runoff is overlooked flood prevention measure
SOIL SEALING DESTROYS SMALL WATER CYCLE(S) ON LAND
EARTH – WATER BUDGET Oceans Atmosphere Land Evaporation 361 000 km³/year Precipitation 324 000 km³/year Runoff 37 000 km³/year Precipitation 99 000 km³/year Evaporation 62 000 km³/year There is more water in „small“ water cycle than in „large“ water cycle!!!