| Chemical Reactions in Mechanistic Water Quality Models: Reaction Rates and Prediction Uncertainty (1996) | |||||||||||||
Abstract | |||||||||||||
| references (e.g., Bicknell et al. 1993), Figure 1 is drawn to represent common reactions. There is no question concerning the correctness of the nitrogen species (compartments) and the reactions among the species displayed in Figure 1. This science is Organic-N NH 4 + NH 3 NO 2 - NO 3 - N 2 Figure 1. The nitrogen cycle in natural waters (adapted from Chapra 1996). K.H. Reckhow 11/12/96 2 not in dispute. If knowledge simply of chemical species and permissible reactions was sufficient for successful modeling of nitrogen in natural waters, then the task would be essentially complete and there would be no question concerning model accuracy. However, predictive models are useful for the purpose of forecasting change in system response. In particular, mechanistic models such as WASP (Ambrose et al 1988), QUAL2E (Brown and Barnwell 1987), and HSPF (Bicknell et al. 1993) are de | |||||||||||||
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