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Institutsname. Modelling groundwater recharge of an urban area in Germany. Sabine Tesch 1 , Volkmar Dunger 2 , Jörg Matschullat 1 1 Interdisciplinary Environmental Research Centre, Technische Universität Bergakademie Freiberg

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  1. Institutsname Modelling groundwater recharge of an urban area in Germany Sabine Tesch1, Volkmar Dunger2, Jörg Matschullat1 1 Interdisciplinary Environmental Research Centre, Technische Universität Bergakademie Freiberg 2 Institute of Geology, Technische Universität Bergakademie Freiberg Germany

  2. reduced soil evaporation increased surface runoff paved surface reduced groundwater recharge What is the challenge? • Problems in urban areas • Increasing land use, sealing • Existing methods  empirical models • Long term average • Prediction of climate change-related intra-annual influences • Short time step model • BOWAM Model Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  3. Study Area Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  4. Digital data sets Data base • Meteorological Data • 1991-2005 • 3 climate stations • 22 rain gauges Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  5. Data base Digital data sets • Meteorological Data • 1991-2005 • 3 climate stations • 22 rain gauges Geological Data Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  6. Data base Digital data sets • Meteorological Data • 1991-2005 • 3 climate stations • 22 rain gauges Geological Data Soil Data Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  7. Data base Digital data sets • Meteorological Data • 1991-2005 • 3 climate stations • 22 rain gauges Geological Data Soil cover Soil Data Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  8. Data base Digital data sets • Meteorological Data • 1991-2005 • 3 climate stations • 22 rain gauges Geological Data Mean depth to groundwater Soil cover Soil Data Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  9. Data base Digital data sets • Meteorological Data • 1991-2005 • 3 climate stations • 22 rain gauges Morphological Data Geological Data Mean depth to groundwater Soil cover Soil Data Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  10. Simulated GW-recharge (1991-2005) range < 50 to > 300 mm a-1 Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  11. Hydrological year 2002 Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  12. Hydrological year 2003 Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  13. Conclusions • groundwater recharge for monthly and annual time steps of an urban area in Germany • Temporal and spatial variability of groundwater recharge for long-term annual average for the time period 1991-2005 • Short time steps exemplarily for 2002 and 2003 • Results lack calibration Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  14. Outlook • Model calibration • Quantification groundwater recharge for regionalized future scenarios of climate change • testing climate change adaptation for the model region of Dresden Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg BALWOIS 2010 Conference Ohrid, Republic of Macedonia May 25, 2010

  15. Institutsname Thank you for attention Volkmar Dunger, Jörg Matschulat BMBF- Federal Ministry of Education and Research (Financialsupport)

  16. The BOWAM Model Two-dimensional water balance model: Sabine Tesch Interdisciplinary Environmental Research Centre (IÖZ) TU Bergakademie Freiberg

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