TY - GEN
T1 - Investigating the importance of groundwater for near surface flux and state simulation through a multi-constraint analysis of a complex surface-subsurface-atmosphere model
AU - Stisen, Simon
AU - Sonnenborg, Torben Obel
AU - Refsgaard, Jens Christian
PY - 2013
Y1 - 2013
N2 - A complex distributed numerical modelling framework including both groundwater-surface-water flow and heat flux exchange with the atmosphere, combined with a unique observational data set, enables a comprehensive application of multiple independent constraints to the model parameter optimization at the catchment scale (1050 km
2). Five independent observational data sets consisting of stream discharge, groundwater head, latent heat flux, soil moisture and remotely-sensed land surface temperature are the basis for formulating 11 objective functions focusing on the bias and RMSE of time series from multiple stations. A sensitivity analysis of 35 model parameters reveals that even surface fluxes and states, such as soil moisture, heat fluxes and land surface temperature, are highly sensitive to parameters that are typically associated with the groundwater components of the model. This indicates the importance of also using fully coupled modelling approaches in detailed studies of the near surface-atmosphere exchanges.
AB - A complex distributed numerical modelling framework including both groundwater-surface-water flow and heat flux exchange with the atmosphere, combined with a unique observational data set, enables a comprehensive application of multiple independent constraints to the model parameter optimization at the catchment scale (1050 km
2). Five independent observational data sets consisting of stream discharge, groundwater head, latent heat flux, soil moisture and remotely-sensed land surface temperature are the basis for formulating 11 objective functions focusing on the bias and RMSE of time series from multiple stations. A sensitivity analysis of 35 model parameters reveals that even surface fluxes and states, such as soil moisture, heat fluxes and land surface temperature, are highly sensitive to parameters that are typically associated with the groundwater components of the model. This indicates the importance of also using fully coupled modelling approaches in detailed studies of the near surface-atmosphere exchanges.
KW - Groundwater
KW - Multi-constraint
KW - Sensitivity analysis
KW - Surface flux
KW - Surface-subsurface-atmosphere model
UR - http://www.scopus.com/inward/record.url?scp=84901319577&partnerID=8YFLogxK
M3 - Conference article in proceedings
SN - 9781907161377
T3 - IAHS Publication
SP - 146
EP - 151
BT - Climate and Land Surface Changes in Hydrology - Proceedings of Symposium H01
A2 - Boegh, E.
A2 - Blyth, E.
A2 - Hannah, D.M.
A2 - Hisdal, H.
A2 - Kunstmann, H.
A2 - Su, B.
A2 - Yilmaz, K.K.
PB - IAHS
T2 - H01, IAHS-IAPSO-IASPEI Assembly
Y2 - 22 July 2013 through 26 July 2013
ER -