Improved understanding of soil moisture variability dynamics

Different trends of soil moisture variability with mean moisture content have been reported from field observations. Here we explain these trends for three different data sets by showing how vegetation, soil and topography controls interact to either create or destroy spatial variance. Improved understanding of these processes is needed for the transformation of point-scale measurements and parameterizations to scales required for climate studies, operational weather forecasting, and large scale hydrological modeling.

[1]  Marnik Vanclooster,et al.  Intraseasonal dynamics of soil moisture variability within a small agricultural maize cropped field , 2002 .

[2]  J. Famiglietti,et al.  Variability in surface moisture content along a hillslope transect: Rattlesnake Hill, Texas , 1998 .

[3]  Günter Blöschl,et al.  Spatial correlation of soil moisture in small catchments and its relationship to dominant spatial hydrological processes , 2004 .

[4]  John D. Albertson,et al.  Temporal dynamics of soil moisture variability: 1. Theoretical basis , 2003 .

[5]  Gaylon S. Campbell,et al.  A SIMPLE METHOD FOR DETERMINING UNSATURATED CONDUCTIVITY FROM MOISTURE RETENTION DATA , 1974 .

[6]  Sampling strategies to estimate field areal evapotranspiration fluxes with a soil water balance approach , 2004 .

[7]  T. Jackson,et al.  Surface soil moisture variation on small agricultural watersheds , 1983 .

[8]  M. Univer.  Ground-based investigation of soil moisture variability within remote sensing footprints during the Southern Great Plains 1997 (SGP97) Hydrology Experiment , 1999 .

[9]  P. Groffman,et al.  Soil moisture variability within remote sensing pixels , 1992 .

[10]  T. Jackson,et al.  Ground‐based investigation of soil moisture variability within remote sensing footprints During the Southern Great Plains 1997 (SGP97) Hydrology Experiment , 1999 .

[11]  R. Koster,et al.  Observational evidence that soil moisture variations affect precipitation , 2003 .

[12]  Luca Ridolfi,et al.  Plants in water-controlled ecosystems: active role in hydrologic processes and response to water stress: III. Vegetation water stress , 2001 .

[13]  Wade T. Crow,et al.  Impact of Soil Moisture Aggregation on Surface Energy Flux Prediction During SGP'97 , 2002 .

[14]  G. Kiely,et al.  On the structure of soil moisture time series in the context of land surface models , 2001 .

[15]  Günter Blöschl,et al.  Preferred states in spatial soil moisture patterns: Local and nonlocal controls , 1997 .

[16]  Guido D. Salvucci.  Limiting relations between soil moisture and soil texture with implications for measured, modeled and remotely sensed estimates , 1998 .

[17]  Luca Ridolfi,et al.  Plants in water-controlled ecosystems: active role in hydrologic processes and response to water stress: II. Probabilistic soil moisture dynamics , 2001 .

[18]  Thomas J. Schmugge,et al.  Soil moisture variation patterns observed in Hand County, South Dakota , 1982 .

[19]  Andrew W. Western,et al.  The Tarrawarra Data Set: Soil moisture patterns, soil characteristics, and hydrological flux measurements , 1998 .

[20]  G. Hornberger,et al.  Empirical equations for some soil hydraulic properties , 1978 .

[21]  A. A. Svetlitchnyi,et al.  Spatial distribution of soil moisture content within catchments and its modelling on the basis of topographic data , 2003 .

[22]  M. Al‐Kaisi,et al.  Transpiration and evapotranspiration from maize as related to leaf area index , 1989 .