Articles | Volume 19, issue 12
https://doi.org/10.5194/hess-19-4811-2015
https://doi.org/10.5194/hess-19-4811-2015
Research article
 | 
16 Dec 2015
Research article |  | 16 Dec 2015

Comparing the ensemble and extended Kalman filters for in situ soil moisture assimilation with contrasting conditions

D. Fairbairn, A. L. Barbu, J.-F. Mahfouf, J.-C. Calvet, and E. Gelati

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Short summary
The ensemble Kalman filter (EnKF) and simplified extended Kalman filter (SEKF) root-zone soil moisture analyses are compared when assimilating in situ surface observations. In the synthetic experiments, the EnKF performs best because it can stochastically capture the errors in the precipitation. The two methods perform similarly in the real experiments. During the summer period, both methods perform poorly as a result of nonlinearities in the land surface model.