Soil moisture evaluation over the Argentine Pampas using models, satellite estimations and in-situ measurements

Study region: The Pampas region is located in the central-east part of Argentina, and is one of the most productive agricultural regions of the world under rainfed conditions. Study focus: This study aims to examine how different Land Surface Models (LSMs) and satellite estimations reproduce daily surface and root zone soil moisture variability over 8 in-situ observation sites. The ability of the LSMs for detecting dry and wet events is also evaluated. New hydrological Insights for the region: The surface and root zone soil moisture of the LSMs and the surface soil moisture of the ESA CCI show in general a good performance against the observations. In particular, the BHOA is able to correctly represent the soil moisture dynamic range and variability, and the GLDAS-Noah, ERA-Interim and LISFLOOD are able to adequately represent the soil moisture anomalies over the Pampas region. In addition to the LSM results, also the ESA CCI satellite estimations anomalies proved to be valuable. However, the LSMs and the ESA CCI have difficulties in reproducing the soil moisture frequency distributions. Based on this study, it is clear that accurate forcing data and soil parameters are critical to improve substantially the ability of LSMs to detect dry and wet events.

SPENNEMANN Pablo;  FERNANDEZ LONG Maria Elena;  GATTINONI Natalia;  CAMMALLERI Carmelo;  NAUMANN Gustavo; 

2020-08-20

ELSEVIER

JRC118937

2214-5818 (online),   

https://www.sciencedirect.com/science/article/pii/S221458182030197X?via%3Dihub,    https://publications.jrc.ec.europa.eu/repository/handle/JRC118937,   

10.1016/j.ejrh.2020.100723 (online),