Sources of uncertainty in estimating stream solute export from headwater catchments at three sites

TitleSources of uncertainty in estimating stream solute export from headwater catchments at three sites
Publication TypeJournal Article
Year of Publication2014
AuthorsYanai, RD, Tokuchi, N, Campbell, JL, Green, MB, Matsuzaki, E, Laseter, SN, Brown, CL, Bailey, AS, Lyons, P, Levine, CR, Buso, DC, Likens, GE, Knoepp, JD, Fukushima, K
JournalHydrological Processes
Paginationn/a - n/a
Date Published2014///
ISBN Number1099-1085
KeywordsCoweeta Experimental Forest, gap filling, Gomadansan, Hubbard Brook, measurement error, model selection, nutrient flux, water chemistry
Abstract

Uncertainty in the estimation of hydrologic export of solutes has never been fully evaluated at the scale of a small-watershed ecosystem. We used data from the Gomadansan Experimental Forest, Japan, Hubbard Brook Experimental Forest, USA, and Coweeta Hydrologic Laboratory, USA, to evaluate many sources of uncertainty, including the precision and accuracy of measurements, selection of models, and spatial and temporal variation. Uncertainty in the analysis of stream chemistry samples was generally small but could be large in relative terms for solutes near detection limits, as is common for ammonium and phosphate in forested catchments. Instantaneous flow deviated from the theoretical curve relating height to discharge by up to 10% at Hubbard Brook, but the resulting corrections to the theoretical curve generally amounted to

URLhttp://onlinelibrary.wiley.com/doi/10.1002/hyp.10265/abstract
Short TitleHydrol. Process.