Hydrological response to climate change in the Black Hills of South Dakota, USA
نویسندگان
چکیده
The hydrological response due to potential CO,~forced climate change in the Black Hills of South Dakota was investigated using modelling techniques that include variations to atmospheric CO,, temperature, and precipitation. The Soil and Water Assessment Tool (SWAT) was used to model the 427 km Spring Creek basin hydrology and simulate the impact of potential climate change. As expected, modelling results of precipitation and temperature change demonstrated that increased temperature caused a decrease in water yield while increased precipitation caused an increase in water yield. Increased CO, and precipitation caused the largest increase in yield. Modelling results of increased atmospheric CO, indicate that average annual water yield increased by W7c. This increase is attributed to a suppression of transpiration processes due to increased levels of atmospheric CO,. Simulation results demonstrate that increased concentrations of atmospheric CO, act to dampen water yield loss due to the effects of increased temperature or decreased precipitation alone.
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