The research reported here was funded by NASA Grants NAG5-9662 and NAG8-1537, NSF Grant ATM-0108741, and FSURF COE. The authors wish to express their thanks to Dr. Ricardo Correa Torres for computing the optimal training periods for this study. We wish to acknowledge the operational global modeling community for the datasets they have provided. Special thanks go to Tony Hollingsworth for the ECMWF datasets used for model verification.
Brankovic, C., T. N. Palmer, F. Molteni, S. Tibaldi, and U. Cubasch, 1990: Extended-range predictions with ECMWF models—Time-lagged ensemble forecasting. Quart. J. Roy. Meteor. Soc., 116 , 867–912.
Heckley, W. A., 1985: Systematic errors of the ECMWF operational forecasting model in tropical regions. Quart. J. Roy. Meteor. Soc., 111 , 709–738.
Kalnay, E., R. Petersen, M. Kanamitsu, and W. E. Baker, 1991: United States operational numerical weather prediction. Rev. Geophys., 29 , 104–114.
Kalnay, E., S. J. Lord, and R. D. McPherson, 1998: Maturity of operational numerical weather prediction: Medium range. Bull. Amer. Meteor. Soc., 79 , 2753–2892.
Kanamitsu, M., 1985: A study of the predictability of the ECMWF Operational Forecast Model in the tropics. J. Meteor. Soc. Japan, 63 , 779–804.
Krishnamurti, T. N., J. Xue, H. S. Bedi, and D. Oosterhof, 1991: Physical initialization for numerical weather prediction over the Tropics. Tellus, 43A–B , 51–81.
Krishnamurti, T. N., C. M. Kishtawal, T. LaRow, D. Bachiochi, Z. Zhang, C. E. Williford, S. Gadgil, and S. Surendran, 1999: Improved skills for weather and seasonal climate forecasts from multimodel superensemble. Science, 285 , 1548–1550.
Krishnamurti, T. N., C. M. Kishtawal, T. LaRow, D. Bachiochi, Z. Zhang, C. E. Williford, S. Gadgil, and S. Surendran, 2000a: Improving tropical precipitation forecasts from a multianalysis superensemble. J. Climate, 13 , 4217–4227.
Krishnamurti, T. N., C. M. Kishtawal, D. W. Shin, and C. E. Williford, 2000b: Multimodel superensemble forecasts for weather and seasonal climate. J. Climate, 13 , 4196–4216.
Krishnamurti, T. N., and Coauthors. 2001: Real time multianalysis/multimodel superensemble forecasts of precipitation using TRMM and SSM/I products. Mon. Wea. Rev., 129 , 2861–2883.
Nieminen, R., 1983: Operational verification of ECMWF forecast fields and results for 1980–1981. ECMWF Tech. Rep. 36, 40 pp. [Available from European Centre for Medium-Range Weather Forecasts, Shinfield Park, Reading RG2 9AX, United Kingdom.].
Stefanova, L., and T. N. Krishnamurti, 2002: Interpretation of seasonal climate forecast using Brier skill score, FSU superensemble, and the AMIP-1 dataset. J. Climate, 15 , 537–544.
Sumi, A., and M. Kanamitsu, 1984: A study of systematic-errors in a numerical weather prediction model. 1. General aspects of the systematic errors and their relation with the transient eddies. J. Meteor. Soc. Japan, 62 , 234–251.