A case study for land model evaluation: Simulation of soil moisture amplitude damping and phase shift

[1] Observations have described soil moisture profile variability in terms of phase shift, fluctuation damping, and persistence increasing with soil depth [Wu et al., 2002]. This variability as a function of soil depth couples to climate variability. Whether or not land models can reproduce this variability should be a good test of their parameterizations in soil hydrology both physically and numerically. A widely used multilayer land surface model was applied to simulate the soil moisture profile variability documented from observations to explore the sensitivity to various parameters and to evaluate the model performances through the detailed analysis of a case study. Sensitivity experiments assumed changes of (1) the initial soil moisture field; (2) the root sink term; (3) the soil texture; and (4) the atmospheric forcing at upper boundary. Their impacts on the soil moisture profile phase shift, amplitude damping, and corresponding evapotranspiration were examined. The key land surface prognostic variables, i.e., soil moisture and evapotranspiration, were evaluated against observations prior to the sensitivity integrations. All the factors that affected the soil moisture profile variability of amplitude damping and phase shift also influenced the amplitude and phase of evapotranspiration, suggesting that the simulation of soil moisture profile variability might be more important in the context of timescales than the soil wetness field itself.

[1]  Eric F. Wood,et al.  A soil‐vegetation‐atmosphere transfer scheme for modeling spatially variable water and energy balance processes , 1997 .

[2]  Wanqiu Wang,et al.  A GCM assessment of atmospheric seasonal predictability associated with soil moisture anomalies over North America , 1998 .

[3]  Richard C. Thompson,et al.  Water budget analysis , 1987 .

[4]  A. Dolman,et al.  Land surface scheme conceptualisation and parameter values for three sites with contrasting soils and climate , 2000 .

[5]  F. Chauvin,et al.  Influence of Soil Moisture on the Asian and African Monsoons. Part I: Mean Monsoon and Daily Precipitation , 2001 .

[6]  E. Small.  The influence of soil moisture anomalies on variability of the North American Monsoon System , 2001 .

[7]  J. Dudhia,et al.  Coupling an Advanced Land Surface–Hydrology Model with the Penn State–NCAR MM5 Modeling System. Part II: Preliminary Model Validation , 2001 .

[8]  Elfatih A. B. Eltahir,et al.  A Soil Moisture–Rainfall Feedback Mechanism: 2. Numerical experiments , 1998 .

[9]  Thomas L. Delworth,et al.  Climate variability and land-surface processes , 1993 .

[10]  B. Bonan,et al.  A Land Surface Model (LSM Version 1.0) for Ecological, Hydrological, and Atmospheric Studies: Technical Description and User's Guide , 1996 .

[11]  Jeremy S. Pal,et al.  Pathways Relating Soil Moisture Conditions to Future Summer Rainfall within a Model of the Land-Atmosphere System , 2001 .

[12]  C. Torrence,et al.  A Practical Guide to Wavelet Analysis. , 1998 .

[13]  Syukuro Manabe,et al.  The Influence of Soil Wetness on Near-Surface Atmospheric Variability , 1989 .

[14]  Syukuro Manabe,et al.  The influence of potential evaporation on the variabilities of simulated soil wetness and climate , 1988 .

[15]  J. Famiglietti,et al.  Multiscale modeling of spatially variable water and energy balance processes , 1994 .

[16]  Jonathan E. Pleim,et al.  Development of a Land Surface Model. Part I: Application in a Mesoscale Meteorological Model , 2001 .

[17]  R. Dickinson,et al.  The Project for Intercomparison of Land Surface Parameterization Schemes (PILPS): Phases 2 and 3 , 1993 .

[18]  A. J. Dolman,et al.  The Pilot Phase of the Global Soil Wetness Project , 1999 .

[19]  Andrew S. Rogowski,et al.  Quantifying Soil Variability in GIS Applications: II Spatial Distribution of Soil Properties , 1996, Int. J. Geogr. Inf. Sci..

[20]  Eric F. Wood,et al.  Application of multiscale water and energy balance models on a tallgrass prairie , 1994 .

[21]  Alan L. Mcnab.  Climate and drought , 1989 .

[22]  M. Murakami.  Large-Scale Aspects of Deep Convective Activity over the GATE Area , 1979 .

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

[24]  D. Lüthi,et al.  The Soil-Precipitation Feedback: A Process Study with a Regional Climate Model , 1999 .

[25]  G. Watts,et al.  Climate Change 1995 , 1998 .

[26]  Hiroshi Matsuyama,et al.  Seasonal/Interannual Variations of Soil Moisture in the Former USSR and Its Relationship to Indian Summer Monsoon Rainfall , 1998 .

[27]  Á. Kertész,et al.  Climate change and soil moisture: A case study , 1999 .

[28]  N. M. Mattikalli,et al.  Microwave remote sensing of temporal variations of brightness temperature and near‐surface soil water content during a watershed‐scale field experiment, and its application to the estimation of soil physical properties , 1998 .

[29]  R. Koster,et al.  Variance and Predictability of Precipitation at Seasonal-to-Interannual Timescales , 2000 .

[30]  Garry R. Willgoose,et al.  The Nerrigundah Data Set: Soil moisture patterns, soil characteristics, and hydrological flux measurements , 2001 .

[31]  D. Nepstad,et al.  Deep Soil Moisture Storage and Transpiration in Forests and Pastures of Seasonally-Dry Amazonia , 1998 .

[32]  Ann Henderson-Sellers,et al.  Sensitivity of the biosphere-atmosphere transfer scheme (BATS) to the inclusion of variable soil characteristics , 1987 .

[33]  Piers J. Sellers,et al.  A Global Climatology of Albedo, Roughness Length and Stomatal Resistance for Atmospheric General Circulation Models as Represented by the Simple Biosphere Model (SiB) , 1989 .

[34]  K. Findell,et al.  Analysis of the pathways relating soil moisture and subsequent rainfall in Illinois , 1999 .

[35]  S. Islam,et al.  Issues of Soil Moisture Coupling in MM5: Simulation of the Diurnal Cycle over the FIFE Area , 2000 .

[36]  Piers J. Sellers,et al.  The first International Satellite Land Surface Climatology Project (ISLSCP) Field Experiment - FIFE , 1992 .

[37]  G. Bonan,et al.  Soil water and the persistence of floods and droughts in the Mississippi River Basin , 1998 .

[38]  Pedro Viterbo,et al.  Comparison of the Land-Surface Interaction in the ECMWF Reanalysis Model with the 1987 FIFE Data , 1998 .

[39]  Randal D. Koster,et al.  Relative contributions of land and ocean processes to precipitation variability , 1995 .

[40]  H. Douville,et al.  Relevance of soil moisture for seasonal climate predictions: a preliminary study , 2000 .

[41]  John C. Schaake,et al.  FIFE 1987 water budget analysis , 1996 .

[42]  Validation of the Atmospheric Forcing of ISLSCP Initiative I CD-ROM and Outputs from the JMA-SiB Usi , 1999 .

[43]  Song-You Hong,et al.  Role of sea surface temperature and soil-moisture feedback in the 1998 Oklahoma–Texas drought , 2000, Nature.

[44]  Robert E. Dickinson,et al.  The Response of Soil Moisture to Long-Term Variability of Precipitation , 2002 .

[45]  Sharon E. Nicholson,et al.  Land surface processes and Sahel climate , 2000 .

[46]  K. Alapaty,et al.  Comparison of four different stomatal resistance schemes using FIFE data. Part II: Analysis of terrestrial biospheric-atmospheric interactions , 1998 .

[47]  Elfatih A. B. Eltahir,et al.  A Soil Moisture–Rainfall Feedback Mechanism: 1. Theory and observations , 1998 .

[48]  J. Philip.  Variable-head ponded infiltration under constant or variable rainfall , 1993 .

[49]  P. Dirmeyer.  Using a global soil wetness dataset to improve seasonal climate simulation , 2000 .

[50]  D. F. Grigal,et al.  Vertical root distributions of northern tree species in relation to successional status , 1987 .