PMID- 16219341
OWN - NLM
STAT- MEDLINE
DCOM- 20060728
LR  - 20191210
IS  - 0048-9697 (Print)
IS  - 0048-9697 (Linking)
VI  - 360
IP  - 1-3
DP  - 2006 May 1
TI  - Analysis of the QUESTOR water quality model using a Fourier amplitude sensitivity 
      test (FAST) for two UK rivers.
PG  - 290-304
AB  - This paper presents the sensitivity analysis of a well-known in-stream water 
      quality model, QUESTOR (QUality Evaluation and Simulation TOol for River systems) 
      as applied to two rivers of contrasting land-use in the northeast of England: the 
      'rural' Ouse and the 'urban' Aire. The analysis employed a version of the Fourier 
      Amplitude Sensitivity Test (FAST) that quantifies the contribution of changes in 
      individual parameters and combination of parameters to the variance of the model 
      output (here the Nash-Sutcliffe) in an efficient way. The quantification of the 
      sensitivity of the model output to the parameters led to the identification of 
      the most influential parameters. Differences between the Aire and the Ouse were 
      found, reflecting their different water quality regime. Results highlighted the 
      importance of interactions between two, or more, parameters on the model output. 
      It led to question the one-at-a-time calibration method currently applied with 
      QUESTOR and underlined the importance of including interactions between 
      parameters in sensitivity analyses. Comparison of the relative influence of 
      parameters versus input data showed contrasting results. In the urban system, the 
      inputs from discharges (sewage treatment works and industrial effluents) were 
      highly influential on model outputs and generally more important than the model 
      parameters. For the rural river, the tributary discharges were most influential, 
      but only at a similar or a lower level than the model parameters.
FAU - Deflandre, A
AU  - Deflandre A
AD  - Centre for Ecology and Hydrology, Crowmarsh Gifford, Wallingford, OX10 8BB, UK. 
      amed@ceh.ac.uk
FAU - Williams, R J
AU  - Williams RJ
FAU - Elorza, F J
AU  - Elorza FJ
FAU - Mira, J
AU  - Mira J
FAU - Boorman, D B
AU  - Boorman DB
LA  - eng
PT  - Evaluation Study
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20051010
PL  - Netherlands
TA  - Sci Total Environ
JT  - The Science of the total environment
JID - 0330500
RN  - 0 (Chlorides)
RN  - 0 (Nitrates)
RN  - 0 (Quaternary Ammonium Compounds)
RN  - 0 (Water Pollutants, Chemical)
RN  - S88TT14065 (Oxygen)
SB  - IM
MH  - Chlorides/analysis
MH  - England
MH  - *Models, Theoretical
MH  - Nitrates/analysis
MH  - Oxygen/analysis
MH  - Quaternary Ammonium Compounds/analysis
MH  - *Rivers
MH  - Sensitivity and Specificity
MH  - Temperature
MH  - Water Movements
MH  - Water Pollutants, Chemical/*analysis
EDAT- 2005/10/13 09:00
MHDA- 2006/07/29 09:00
CRDT- 2005/10/13 09:00
PHST- 2005/10/13 09:00 [pubmed]
PHST- 2006/07/29 09:00 [medline]
PHST- 2005/10/13 09:00 [entrez]
AID - S0048-9697(05)00609-1 [pii]
AID - 10.1016/j.scitotenv.2005.08.041 [doi]
PST - ppublish
SO  - Sci Total Environ. 2006 May 1;360(1-3):290-304. doi: 
      10.1016/j.scitotenv.2005.08.041. Epub 2005 Oct 10.