Application of Hierarchy Theory to Cross-Scale Hydrologic Modeling of Nutrient Loads

Autor: Robert V. O'Neill, Elizabeth R. Smith, Liem Tran, Carol P. Harden, Randall Bruins
Rok vydání: 2013
Předmět:
Zdroj: Water Resources Management. 27:1601-1617
ISSN: 1573-1650
0920-4741
DOI: 10.1007/s11269-013-0260-0
Popis: We describe a framework called Regional Hydrologic Modeling for Environmental Evaluation (RHyME2) for hydrologic modeling across scales. Rooted from hierarchy theory, RHyME2 acknowledges the rate-based hierarchical structure of hydrological systems. Operationally, hierarchical constraints are accounted for and explicitly described in models put together into RHyME2. We illustrate RHyME2with a two-module model to quantify annual nutrient loads in stream networks and watersheds at regional and subregional levels. High values of R2 (>0.95) and the Nash–Sutcliffe model efficiency coefficient (>0.85) and a systematic connection between the two modules show that the hierarchy theory-based RHyME2 framework can be used effectively for developing and connecting hydrologic models to analyze the dynamics of hydrologic systems.
Databáze: OpenAIRE