A method for uncertainty constraint of catchment discharge and phosphorus load estimates
A method for uncertainty constraint of catchment discharge and phosphorus load estimates
复制标题
流域流量和磷负荷估算的不确定性约束方法
DOI:
10.1002/hyp.13217
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发表时间:
2018
影响因子:
3.2
通讯作者:
Hollaway M
中科院分区:
文献类型:
--
作者:
Hollaway M
River discharge and nutrient measurements are subject to aleatory and epistemic uncertainties. In this study, we present a novel method for estimating these uncertainties in colocated discharge and phosphorus (P) measurements. The “voting point”‐based method constrains the derived stage‐discharge rating curve both on the fit to available gaugings and to the catchment water balance. This helps reduce the uncertainty beyond the range of available gaugings and during out of bank situations. In the example presented here, for the top 5% of flows, uncertainties are shown to be 139% using a traditional power law fit, compared with 40% when using our updated “voting point” method. Furthermore, the method is extended to in situ and lab analysed nutrient concentration data pairings, with lower uncertainties (81%) shown for high concentrations (top 5%) than when a traditional regression is applied (102%). Overall, for both discharge and nutrient data, the method presented goes some way to accounting for epistemic uncertainties associated with nonstationary physical characteristics of the monitoring site.
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DOI:
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发表时间:
2005
期刊:
影响因子:
--
作者:
F. Moatar;M. Meybeck
通讯作者:
M. Meybeck
DOI:
10.1080/02626667.2015.1031761
发表时间:
2016-07-01
期刊:
HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES
影响因子:
--
作者:
Beven, Keith
通讯作者:
Beven, Keith
影响因子:
3.2
作者:
Beven K
通讯作者:
Beven K
DOI:
--
发表时间:
2008
期刊:
影响因子:
--
作者:
G. O'Donnell;J. Geris;William M. Mayes;J. Ewen;P. O'connell
通讯作者:
P. O'connell
影响因子:
9.8
作者:
M. Perks;Gareth Owen;C. Benskin;J. Jonczyk;C. Deasy;C. Deasy;S. Burke;S. Reaney;P. Haygarth
通讯作者:
P. Haygarth