Publication of this research is supported by National Aeronautics and Space Administration Grant NAG8-1526.
Bouttier, F., J.-F. Mahfouf, and J. Noilhan, 1993: Sequential assimilation of soil moisture from atmospheric low-level parameters. Part I: Sensitivity and calibration studies. J. Appl. Meteor.,32, 1335–1351.
DeWitt, D. G., 1996: The effect of the cumulus convection on the climate of the COLA general circulation model. COLA Rep. 27, Center for Ocean–Land–Atmosphere Studies, 58 pp. [Available from the Center for Ocean–Land–Atmosphere Studies, 4041 Powder Mill Road, Suite 302, Calverton, MD 20705.].
——, and E. K. Schneider, 1996: The earth radiation budget as simulated by the COLA GCM. COLA Rep. 35, Center for Ocean–Land–Atmosphere Studies, , 41 pp. [Available from the Center for Ocean–Land–Atmosphere Studies, 4041 Powder Mill Road, Suite 302, Calverton, MD 20705.].
Dirmeyer, P. A., 1994: Vegetation as a feedback mechanism in midlatitude drought. J. Climate,7, 1463–1483.
——, 1999: Assessing GCM sensitivity to soil wetness using GSWP data. J. Meteor. Soc. Japan,77, 367–385.
——, and J. Shukla, 1994: Albedo as a modulator of climate response to tropical deforestation. J. Geophys. Res.,99, 20 863–20 877.
——, and ——, 1996: The effect on regional and global climate of expansion of the world’s deserts. Quart. J. Roy. Meteor. Soc.,122, 451–482.
——, and F. J. Zeng, 1997: A two-dimensional implementation of the Simple Biosphere (SiB) model. COLA Rep. 48, Center for Ocean–Land–Atmosphere Studies, 30 pp. [Available from the Center for Ocean–Land–Atmosphere Studies, 4041 Powder Mill Road, Suite 302, Calverton, MD 20705.].
——, and ——, 1999: Precipitation infiltration in the Simplified SiB land surface scheme. J. Meteor. Soc. Japan,77, 291–303.
——, A. J. Dolman, and N. Sato, 1999: The Global Soil Wetness Project: A pilot project for global land surface modeling and validation. Bull. Amer. Meteor. Soc.,80, 851–878.
Entin, J. K., 1998: Spatial and temporal scales of soil moisture variations. Ph.D. dissertation, University of Maryland, 125 pp. [Available from University of Maryland, College Park, MD 20742.].
Hollinger, S. E., and S. A. Isard, 1994: A soil moisture climatology of Illinois. J. Climate,7, 822–833.
Houser, P. R., W. J. Shuttleworth, J. S. Famiglietti, H. V. Gupta, K. H. Syed, and D. C. Goodrich, 1998: Integration of soil moisture remote sensing and hydrologic modeling using data assimilation. Water Resour. Res.,34, 3405–3420.
Huang, J., H. M. van den Dool, and K. P. Georgakakos, 1996: Analysis of model-calculated soil moisture over the United States (1931–1993) and applications to long-range temperature forecasts. J. Climate,9, 1350–1362.
Kabat, P., R. A. Feddes, and R. A. W. Hutjes, 1997: The scaling characteristics of soil parameters: From plot scale heterogeneity to subgrid parameterization. J. Hydrol.,190, 363–396.
Kinter, J. L., J. Shukla, L. Marx, and E. K. Schneider, 1988: A simulation of the winter and summer circulations with the NMC global circulation model. J. Atmos. Sci.,45, 2486–2522.
——, and Coauthors, 1997: The COLA atmosphere–biosphere general circulation model. Vol. 1: Formulation. COLA Rep. 51, Center for Ocean–Land–Atmosphere Studies, 46 pp. [Available from the Center for Ocean–Land–Atmosphere Studies, 4041 Powder Mill Road, Suite 302, Calverton, MD 20705.].
Liston, G. E., Y. C. Sud, and G. K. Walker, 1993: Design of a global soil moisture initialization procedure for the Simple Biosphere model. NASA Tech. Memo. 104590, Goddard Space Flight Center, Greenbelt, MD, 138 pp.
Meeson, B. W., F. E. Corprew, J. M. P. McManus, D. M. Myers, J. W. Closs, K. J. Sun, D. J. Sunday, and P. J. Sellers, 1995: ISLSCP Initiative I— Global Data Sets for Land–Atmosphere Models, 1987–1988. Vols. 1–5, NASA, CD-ROM, disks USA_NASA_GDAAC_ISLSCP_001–USA_NASA_GDAAC_ISLSCP_005.
Mintz, Y., and Y. Serafini, 1981: Global fields of soil moisture and surface evapotranspiration. Research Review—1980/1981. NASA Tech. Memo. 83907, Goddard Space Flight Center, Greenbelt, MD, 178–180.
——, and G. K. Walker, 1993: Global fields of soil moisture and land surface evapotranspiration derived from observed precipitation and surface air temperature. J. Appl. Meteor.,32, 1305–1334.
Reynolds, R. W., and T. M. Smith, 1994: Improved global sea surface temperature analyses using optimal interpolation. J. Climate,7, 929–948.
Robock, A., K. Ya. Vinnikov, G. Srinivasan, J. K. Entin, S. E. Hollinger, N. A. Speranskaya, S. Liu, and A. Namkhai, 1999:The global soil moisture data bank. Bull. Amer. Meteor. Soc.,81, 1281–1299.
Ropelewski, C. F., J. E. Janowiak, and M. F. Halpert, 1985: The analysis and display of real time surface climate data. Mon. Wea. Rev.,113, 1101–1107.
Schneider, E. K., and J. L. Kinter III, 1994: An examination of internally generated variability in long climate simulations. Climate Dyn.,10, 181–204.
Sela, J. G., 1980: Spectral modeling at the National Meteorological Center. Mon. Wea. Rev.,108, 1279–1292.
Sellers, P. J., Y. Mintz, Y. C. Sud, and A. Dalcher, 1986: A simple biosphere model (SiB) for use within general circulation models. J. Atmos. Sci.,43, 505–531.
——, and Coauthors, 1996: The ISLSCP Initiative I global datasets:Surface boundary conditions and atmospheric forcings for land–atmosphere studies. Bull. Amer. Meteor. Soc.,77, 1987–2005.
Shukla, J., and Y. Mintz, 1982: Influence of land-surface evapotranspiration on the earth’s climate. Science,215, 1498–1501.
——, D. A. Paolino, D. M. Straus, D. DeWitt, M. Fennessy, J. L. Kinter, L. Marx, and R. Mo, 2000: Dynamical seasonal predictions with the COLA atmospheric model. Quart. J. Roy. Meteor. Soc., in press.
U.S. National Research Council, 1994: GOALS Global Ocean–Atmosphere–Land System for Predicting Seasonal-to-Interannual Climate. National Academy Press, 103 pp.
Vinnikov, K. Ya., A. Robock, N. A. Speranskaya, and C. A. Schlosser, 1996: Scales of temporal and spatial variability of midlatitude soil moisture at different levels. J. Geophys. Res.,101, 7163–7174.
Xie, P., and P. A. Arkin, 1997: Global precipitation: A 17-year monthly analysis based on gauge observations, satellite estimates, and numerical model outputs. Bull. Amer. Meteor. Soc.,78, 2539–2558.
Xue, Y., P. J. Sellers, J. L. Kinter, and J. Shukla, 1991: A simplified biosphere model for global climate studies. J. Climate,4, 345–364.
——, F. J. Zeng, and C. A. Schlosser, 1996: SSiB and its sensitivity to soil properties—A case study using HAPEX-Mobilhy data. Global Planet. Change,13, 183–194.