Nature Geoscience commentary: Wedge approach to water stress

Yoshihide Wada of the Earth Surface Hydrology group co-authored a commentary in Nature Geoscience, arguing that the wedge approach proposed for evaluating carbon mitigation policies is also suitable to evaluate policies to avoid future water stress.

See the commentary at: Wada, T., T. Gleeson and L. Esnault, 2014. Wedge approach to water stress. Nature Geoscience 7, 615-617.

See also the article in Space Daily!





RS soil moisture helps to calibrate large-scale hydrological models

In addition to discharge observations, remotely sensed soil moisture estimates improve the calibration of large-scale hydrological models as shown by Niko Wanders  in a recent publication in Water Resources Research. In this paper a dual state-parameter Ensemble Kalman Filter is used to calibrate the hydrological model LISFLOOD for the Upper Danube. Calibration is done using discharge and remotely sensed soil moisture acquired by AMSR-E, SMOS, and ASCAT.

Wanders, N., M.F.P. Bierkens, S.M. Jong, A. Roo, and D. Karssenberg, 2014. The benefits of using remotely sensed soil moisture in parameter identification of large-scale hydrological models. Water Resources Research 50 (in press).




Geomorphology and dryland ecohydrology: two new publications

Our group (co-)authored two new publications:

1. A publication on automated geomorphological mapping to delineate hydrologic response units for semi-distributed catchment modeling:

E. Vannametee, L.V. Babel, M.R. Hendriks, J. Schuur, S.M. de Jong, M.F.P. Bierkens, D. Karssenberg, 2014. Semi-automated mapping of landforms using multiple point geostatistics. Geomorphology 221,  298-319.

2. A publication on dryland ecohydrology showing how semi-arid patterned ecosystems behave under changes in rainfall intensity. A surprising result is that that, for a constant annual rainfall rate, both an increase and a decrease in mean rainfall intensity can trigger desertification. Sea the publication at:

Siteur, K., M. B. Eppinga,,  D. Karssenberg, M. Baudena, M. F. P. Bierkens, and M. Rietkerk, 2014. How will increases in rainfall intensity affect semiarid ecosystems? Water Resources Research  50, 5980–6001.