Hydroclimatology of Illinois: A comparison of monthly evaporation estimates based on atmospheric water balance and soil water balance

Here we describe the regional-scale hydrological cycle of Illinois, including both the land and atmospheric branches, using a data set on most of the hydrological variables, i.e., precipitation, streamflow, soil water content, snow depth, groundwater level, and atmospheric flux of water vapor. Since direct observations of evaporation are not available, two different approaches, soil water balance and atmospheric water balance, were applied to estimate the regional evaporation over Illinois from 1983 to 1994. The availability of a comprehensive hydrological data set covering the large area of Illinois facilitated a comparison between these two approaches for estimation of evaporation. To our knowledge, this is the first time such a comparison has been made. The climatologies of the monthly evaporation estimates from the two approaches agree reasonably well and within a 10% error; however, substantial differences exist between the two estimates of evaporation for individual months. The seasonal variability of the evaporation estimates based on soil water balance is largely balanced by the seasonal pattern of subsurface storage, whereas the seasonal variability of evaporation estimates from the atmospheric water balance is almost entirely balanced by the seasonal pattern of lateral fluxes of water vapor. This contrast reflects a fundamental difference in the hydrology of the land and atmospheric branches of the regional water cycle. In light of the fact that independent data sets were used in the two approaches, our results are encouraging: The atmospheric water balance approach has the potential for the accurate estimation of the climatology of regional evaporation, at least for humid regions at a scale similar to that of Illinois (∼10 5 km -2 ). However, sensitivity analysis suggests that the accuracy of atmospheric water balance computations is rather poor for the scale smaller than 10 5 km 2 . For the calculation of evaporation using the soil water balance approach in regions where the groundwater table is rather shallow, the incorporation of the change in groundwater storage is indispensable since groundwater aquifers provide a significant portion of water storage at the monthly timescale.

[1]  D. L. Peck,et al.  Specific Yield Compilation of Specific Yields for Various Materials , 1967 .

[2]  D. Lettenmaier,et al.  A simple hydrologically based model of land surface water and energy fluxes for general circulation models , 1994 .

[3]  L. Hipps,et al.  Estimation of regional evaporation for a tallgrass prairie from measurements of properties of the atmospheric boundary layer , 1991 .

[4]  R. Reynolds,et al.  The NCEP/NCAR 40-Year Reanalysis Project , 1996, Renewable Energy.

[5]  J. Roads,et al.  Large-Scale Aspects of the United States Hydrologic Cycle , 1994 .

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

[7]  Anton Beljaars,et al.  Cabauw Data for the Validation of Land Surface Parameterization Schemes , 1997 .

[8]  B. Itier.  Measurement and Estimation of Evapotranspiration , 1996 .

[9]  An energy balance approach to determine regional evapotranspiration based on planetary boundary layer similarity theory and regularly recorded data , 1987 .

[10]  R. Rosen,et al.  Modes of Variability in Annual Hemispheric Water Vapor and Transport Fields , 1983 .

[11]  C. Ropelewski,et al.  The Observed Mean Annual Cycle of Moisture Budgets over the Central United States (1973-92) , 1998 .

[12]  C. Tucker,et al.  Interannual variations in satellite-sensed vegetation index data from 1981 to 1991 , 1998 .

[13]  J. Shukla,et al.  Influence of Land-Surface Evapotranspiration on the Earth's Climate , 1982, Science.

[14]  J. Peixoto,et al.  Physics of climate , 1992 .

[15]  Scott A. Isard,et al.  A Soil Moisture Climatology of Illinois , 1994 .

[16]  K. Elder,et al.  Hydrologic characteristics and water balance of an Alpine Basin in the Sierra Nevada , 1991 .

[17]  M. M. Leighton,et al.  Physiographic Divisions of Illinois , 1948, The Journal of Geology.

[18]  C. G. Lonnquist,et al.  A real-time climate information system for the midwestern United States , 1990 .

[19]  THE USE OF SIMPLE PROCESS-BASED MODELS IN THE ESTIMATE OF WATER BALANCES FOR MIXED LAND USE CATCHMENTS IN EAST AFRICA , 1996 .

[20]  Richard K. Farnsworth,et al.  Mean monthly, seasonal, and annual pan evaporation for the United States , 1983 .

[21]  Douglas M. A. Jones.  Variability of evapotranspiration in Illinois , 1966 .

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

[23]  V. Starr,et al.  On the Global Balance of Water Vapor and the Hydrology of Deserts , 1958 .

[24]  P. S. Eagleson,et al.  Atmospheric water vapor transport and continental hydrology over the Americas , 1994 .

[25]  Chong-Yu Xu,et al.  Regional water balance modelling in the NOPEX area: development and application of monthly water balance models , 1996 .

[26]  E. Rasmusson,et al.  Atmospheric Water Vapor Transport and the Water Balance of North America , 1968 .

[27]  David R. Legates,et al.  The Accuracy of United States Precipitation Data , 1994 .

[28]  H. Savijärvi.  Global Energy and Moisture Budgets from Rawinsonde Data , 1988 .

[29]  E. Rasmusson.  A STUDY OF THE HYDROLOGY OF EASTERN NORTH AMERICA USING ATMOSPHERIC VAPOR FLUX DATA , 1971 .

[30]  W. Brutsaert,et al.  Determination of regional evapotranspiration from upper air meteorological data , 1977 .

[31]  Chong-Yu Xu,et al.  Methodology and comparative study of monthly water balance models in Belgium, China and Burma , 1992 .

[32]  E. Rasmusson,et al.  Studies of North American continental‐scale hydrology using Eta model forecast products , 1996 .

[33]  Wilfried Brutsaert,et al.  Daily evaporation over a region from lower boundary layer profiles measured with radiosondes , 1991 .

[34]  Marc B. Parlange,et al.  Regional scale evaporation and the atmospheric boundary layer , 1995 .

[35]  Elfatih A. B. Eltahir,et al.  An analysis of the soil moisture‐rainfall feedback, based on direct observations from Illinois , 1997 .

[36]  J. Peixoto,et al.  The Atmospheric Branch Of The Hydrological Cycle And Climate , 1983 .

[37]  D. Barr.  New Approaches in Water Balance Computations. , 1986 .

[38]  F. Bryan,et al.  Seasonal variation of the global water balance based on aerological data , 1984 .

[39]  R. Rosen,et al.  Atmospheric moisture transport and the water balance of the Mediterranean Sea , 1982 .

[40]  Variations in the global water budget , 1983 .

[41]  Eric F. Wood,et al.  Application of a macroscale hydrologic model to estimate the water balance of the Arkansas-Red River Basin , 1996 .

[42]  M. Estoque,et al.  WATER-VAPOR TRANSFER OVER THE NORTH AMERICAN CONTINENT , 1954 .

[43]  K. Mo,et al.  Large-Scale Atmospheric Moisture Transport as Evaluated in the NCEP/NCAR and the NASA/DAO Reanalyses , 1996 .

[44]  E. L. Peck,et al.  Accuracy of precipitation measurements for hydrologic modeling , 1974 .

[45]  Taikan Oki,et al.  Global atmospheric water balance and runoff from large river basins , 1995 .

[46]  R. Rosen,et al.  Exchange of water vapor between land and ocean in the northern hemisphere , 1981 .

[47]  G. S. Benton,et al.  The role of the atmosphere in the hydrologic Cycle , 1949 .

[48]  A. Baumgartner.  The world water balance , 1975 .

[49]  L. Lesack.  Water balance and hydrologic characteristics of a rain forest catchment in the Central Amazon Basin , 1993 .

[50]  A. Henderson‐sellers,et al.  Validation of soil moisture simulation in landsurface parameterisation schemes with HAPEX data , 1996 .

[51]  J. B. Williams,et al.  The water balance of an agricultural catchment. III. The water balance. , 1980 .

[52]  S. Changnon,et al.  Relations between precipitation and shallow groundwater in Illinois , 1988 .

[53]  C. W. Thornthwaite.  An approach toward a rational classification of climate. , 1948 .

[54]  William M. Alley,et al.  On the Treatment of Evapotranspiration, Soil Moisture Accounting, and Aquifer Recharge in Monthly Water Balance Models , 1984 .

[55]  K. Mo,et al.  The moisture budget of the central United States in spring as evaluated in the NCEP/NCAR and the NASA/DAO reanalyses , 1996 .

[56]  W. O. Pruitt,et al.  Large Weighing Lysimeter for Measuring Evapotranspiration , 1960 .

[57]  W. Gutowski,et al.  Atmospheric Water Vapor Transport in NCEP–NCAR Reanalyses: Comparison with River Discharge in the Central United States , 1997 .

[58]  E. Rasmusson,et al.  ATMOSPHERIC WATER VAPOR TRANSPORT AND THE WATER BALANCE OF NORTH AMERICA: PART I. CHARACTERISTICS OF THE WATER VAPOR FLUX FIELD , 1967 .